Variable Abbreviations
This list gives an overview of variables commonly used in eddy covariance ecosystem research.
Note: use the search bar above the table to find specific items.
- The list below contains abbreviations along with description of many variables used in FLUXNET, ICOS, Ameriflux, EddyPro, Reddyproc, among others.
wdt_ID | Label | Description | Units (preferred) or format | Category | Used In |
---|---|---|---|---|---|
1 | #gfRF | Gap-filled using random forest | same as input var | DIIVE | |
2 | #odAL | Outliers were removed using outlier detection: absolute limits | same as input var | DIIVE | |
3 | (footprint) model | Model for footprint estimation | - | EddyPro (_full_output_ file) | |
4 | (z-d)/L | Monin-Obukhov stability parameter | # | EddyPro (_full_output_ file) | |
5 | _f | (suffix) Original values and gaps filled with mean of selected datapoints (condition depending on gap filling method) | ReddyProc | ||
6 | _fall | (suffix) All values considered as gaps (for uncertainty estimates) | ReddyProc | ||
7 | _fall_qc | (suffix) All values considered as gaps (for uncertainty estimates) | ReddyProc | ||
8 | _fmeth | (suffix) Method used for gap filling: 1 = similar meteo condition (sFillLUT with Rg, VPD, Tair) 2 = similar meteo (sFillLUT with Rg only) 3 = mean diurnal course (sFillMDC)) | ReddyProc | ||
9 | _fnum | (suffix) Number of datapoints used for gap filling | # | ReddyProc | |
10 | _fqc | (suffix) Quality flag assigned depending on gap filling method and window length: 0 = original, 1 = most reliable, 2 = medium, 3 = least reliable | # | ReddyProc | |
11 | _fsd | (suffix) Standard deviation of datapoints used for gap filling (uncertainty) | ReddyProc | ||
12 | _fsdu | (suffix) Standard deviation across uStar thresholds (uncertainty, bias) | ReddyProc | ||
13 | _fsdug | (suffix) Combination of random uncertainty and uncertainty due to u*: sqrt(fsd^2 + fsdu^2) | ReddyProc | ||
14 | _fwin | (suffix) Full window length used for gap filling | ReddyProc | ||
15 | _orig | (suffix) Original values used for gap filling | ReddyProc | ||
16 | _QCF0 | (suffix) measured (not gap-filled) data of highest quality | DIIVE | ||
17 | _QCF01 | (suffix) measured (not gap-filled) data of highest and OK quality | DIIVE | ||
18 | _SCF | (suffix) Spectral correction factor for the respective flux | # | ||
19 | _sd | (suffix) Standard deviation | ReddyProc | ||
20 | _SD | (suffix) Standard deviation | |||
21 | _Thres | (suffix) the threshold of uStar values used to mark insufficient conditions | m s-1 | ReddyProc | |
22 | _U05 | (suffix) low estimate (5% quantile of the bootstrapped uncertainty distribution) | ReddyProc | ||
23 | _U50 | (suffix) median estimate (50% quantile of the bootstrapped uncertainty distribution) | ReddyProc | ||
24 | _U95 | (suffix) high estimate (95% quantile of the bootstrapped uncertainty distribution) | ReddyProc | ||
25 | _uStar | (suffix) estimate on the original unbootstrapped data | ReddyProc | ||
26 | abs_lim | Hard flags for individual variables for absolute limits | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
27 | AGC | Automatic Gain Control LI-7500 | % | EC raw data files (ASCII) | |
28 | AGC | Mean value of AGC for LI‑7500RS or LI‑7200RS | # | EddyPro (_full_output_ file) | |
29 | air_density | Density of ambient air | kg m-3 | EddyPro (_full_output_ file) | |
30 | air_heat_capactiy | Specific heat at constant pressure of ambient air | J K-1 kg-1 | EddyPro (_full_output_ file) | |
31 | air_molar_volume | Molar volume of ambient air | m3 mol-1 | EddyPro (_full_output_ file) | |
32 | air_pressure | Mean pressure of ambient air, either calculated from high frequency air pressure readings, or estimated based on site altitude (barometric pressure) | Pa | EddyPro (_full_output_ file) | |
33 | air_temperature | Mean temperature of ambient air, either calculated from high frequency air temperature readings, or estimated from sonic temperature | K | EddyPro (_full_output_ file) | |
34 | ALB | Albedo, range 0-100 | % | Ameriflux | |
35 | amp_res | Hard flags for individual variables for amplitude resolution | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
36 | APAR | Absorbed PAR | µmolPhoton m-2 s-1 | Ameriflux | |
37 | ATM | Atmospheric | - | ||
38 | attack_angle | Hard flag for attack angle test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
39 | AVG | Average | - | ||
40 | AW_IN | All-wave incoming radiation without correction (Pyrradiometer) | W m–2 | ||
41 | AW_OUT | All-wave outgoing radiation without correction (Pyrradiometer) | W m–2 | ||
42 | BAK | Backup measurement, e.g. used at ICOS station CH-DAV | |||
43 | BC | Below Canopy | - | ||
44 | BD | Bulk density | g cm-3 | ||
45 | BICO | Python script for BInary COnversion of EC raw data binary files to ASCII format | - | BICO | |
46 | bowen_ratio | Sensible heat flux to latent heat flux ratio | # | EddyPro (_full_output_ file) | |
47 | BV_EC | Battery Voltage EC system | V | ||
48 | BV_iDL | Internal Battery Voltage Logger | V (location and replicate number is essential) | ||
49 | CH4 | CH4 molar fraction (in humid air), wet mole fraction | nmol mol-1, µmol mol-1 | ||
50 | CH4_DRY | CH4 dry mole fraction (in dry air), mixing ratio, ppb | nmol mol-1 | EC raw data files (ASCII) | |
51 | CH4_MIXING_RATIO | Methane (CH4) in mole fraction of dry air | nmolCH4 mol-1 | Ameriflux | |
52 | CH4_QCL_CMB | CH4 concentration from QCL for chamber system | ppb (nmol CH4 mol-1) | ||
53 | CH4_QCL_EC | CH4 concentration from QCL for eddy system | ppb (nmol CH4 mol-1) | ||
54 | CH4_QCL_PRF | CH4 concentration from QCL for profile system | ppb (nmol CH4 mol-1) | ||
55 | CM | Chamber | - | ||
56 | CMB | Chamber | - | ||
57 | CNT | Suffix for counts | - | ||
58 | CO | Carbon Monoxide (CO) mole fraction in wet air | nmolCO mol-1 | Ameriflux | |
59 | CO2 | Carbon Dioxide (CO2) mole fraction in wet air | µmolCO2 mol-1 | Ameriflux | |
60 | CO2_BOLE | tree stem CO2 | vol% | ||
61 | CO2_CONC | CO2 concentration density, molar density | mmol m-3 | EC raw data files (ASCII) | |
62 | CO2_DRY | CO2 dry mole fraction (in dry air), mixing ratio, ppm (parts per million) | µmol CO2 mol-1 | EC raw data files (ASCII) | |
63 | CO2_IRGA70_CMB | CO2 concentration from IRGA Li-7000 for chamber system | µmol CO2 mol-1 | ||
64 | CO2_IRGA70_EC | CO2 concentration from IRGA Li-7000 for eddy system | µmol CO2 mol-1 | ||
65 | CO2_IRGA70_PRF | CO2 concentration from IRGA Li-7000 for profile | µmol CO2 mol-1 | ||
66 | CO2_IRGA70_STM | CO2 concentration from IRGA Li-7000, in stem | µmol CO2 mol-1 | ||
67 | CO2_IRGA72_CMB | CO2 concentration from IRGA Li-7200 for chamber system | µmol CO2 mol-1 | ||
68 | CO2_IRGA72_EC | CO2 concentration from IRGA Li-7200 for eddy system | µmol CO2 mol-1 | ||
69 | CO2_IRGA72_PRF | CO2 concentration from IRGA Li-7200 for profile | µmol CO2 mol-1 | ||
70 | CO2_IRGA72_STM | CO2 concentration from IRGA Li-7200, in stem | µmol CO2 mol-1 | ||
71 | CO2_IRGA75_CMB | CO2 concentration from IRGA Li-7500 for chamber system | µmol CO2 mol-1 | ||
72 | CO2_IRGA75_EC | CO2 concentration from IRGA Li-7500 for eddy system | µmol CO2 mol-1 | ||
73 | CO2_IRGA75_PRF | CO2 concentration from IRGA Li-7500 for profile | µmol CO2 mol-1 | ||
74 | CO2_IRGA75_STM | CO2 concentration from IRGA Li-7500, in stem | µmol CO2 mol-1 | ||
75 | CO2_MIXING_RATIO | Carbon Dioxide (CO2) in mole fraction of dry air | µmolCO2 mol-1 | Ameriflux | |
76 | CO2_SIGMA | Standard deviation of carbon dioxide mole fraction in wet air | µmolCO2 mol-1 | Ameriflux | |
77 | CO2C13 | Stable isotopic composition of CO2 - C13 (i.e., d13C of CO2) | ‰ (permil) | Ameriflux | |
78 | COND_WATER | Conductivity (i.e., electrical conductivity) of water | µS cm-1 | Ameriflux | |
79 | COOLER_V | Cooler voltage | V | EC raw data files (ASCII) | |
80 | CUP | Cup Anemometer | - | ||
81 | D | Depth | - | ||
82 | D_SNOW | Snow depth | cm, m | Ameriflux | |
83 | DATA_SIZE | Data size of instrument data block, number of bytes in instrument record | bytes | EC raw data files (ASCII) | |
84 | DATE | date | yyyy-mm-dd | ||
85 | date | Date of the end of the averaging period | yyyy-mm-dd | EddyPro (_full_output_ file) | |
86 | DAY | 2 digit day of month | dd | ||
87 | DBH | diameter of tree measured at breast height(1.3 m) | cm | ||
88 | DBH | Diameter of tree measured at breast height (1.3m) with continuous dendrometers | cm | Ameriflux | |
89 | DENDRO | Dendrometer | mm | ||
90 | DIF | Diffuse | - | ||
91 | discontinuities | Hard flags for individual variables for discontinuities test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
92 | discontinuities | Soft flags for individual variables for discontinuities test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
93 | DNTP | Time Difference between NTP Clock and Clock | msec | ||
94 | DO | Dissolved oxygen in water | µmol L-1 | Ameriflux | |
95 | DOC | Dissolved organic carbon | mg l-1 | ||
96 | DOY | 3 digit day of year | ddd | ||
97 | drop_out | Hard flags for individual variables for drop-out test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
98 | DT | Daytime (used in partitioning) | - | Fluxes | |
99 | e | Ambient water vapor partial pressure | Pa | EddyPro (_full_output_ file) | |
100 | E0 | activation energy parameter (K) in relationship between temperature and nighttime NEE from night-time partitioning | ReddyProc | ||
101 | EC | Eddy covariance | - | Fluxes | |
102 | EP | EddyPro Flux Calculation Software | - | ||
103 | es | Ambient water vapor partial pressure at saturation | Pa | EddyPro (_full_output_ file) | |
104 | ET | Evapotranspiration flux | mm hour-1 | ||
105 | ET | Evapotranspiration flux | mm hour-1 | EddyPro (_full_output_ file) | |
106 | ET_f | Gap-filled evapotranspiration flux, calculated from gap-filled LE | mmol H20 m-2 s-1 | ReddyProc | |
107 | EXT | External | - | ||
108 | extravar_mean | Mean value of extravar | (‡) | EddyPro (_full_output_ file) | |
109 | FAPAR | Fraction of absorbed PAR, range 0-100 | % | Ameriflux | |
110 | FC | Carbon Dioxide (CO2) turbulent flux (no storage correction) | µmolCO2 m-2 s-1 | Ameriflux | |
111 | FC_SSITC_TEST | Results of the quality flagging for FC according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
112 | FCH4 | Methane (CH4) turbulent flux (no storage correction) | nmolCH4 m-2 s-1 | Ameriflux | |
113 | FCH4_SSITC_TEST | Results of the quality flagging for FCH4 according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
114 | FETCH_70 | Distance at which footprint cumulative probability is 70% | m | ||
115 | FETCH_80 | Distance at which footprint cumulative probability is 80% | m | ||
116 | FETCH_90 | Distance at which footprint cumulative probability is 90% | m | ||
117 | FETCH_FILTER | Footprint quality flag (i.e., 0, 1): 0 and 1 indicate data measured when wind coming from direction that should be discarded and kept, respectively | nondimensional | Ameriflux | |
118 | FETCH_MAX | Distance at which footprint contribution is maximum | m | ||
119 | file_records | Number of valid records found in the raw file (or set of raw files) | # | EddyPro (_full_output_ file) | |
120 | filename | Name of the raw file (or the first of a set) from which the dataset for the current averaging interval was extracted | - | EddyPro (_full_output_ file) | |
121 | FIPAR | Fraction of intercepted PAR, range 0-100 | % | Ameriflux | |
122 | FIT_FLAG | Fit flag | flag | EC raw data files (ASCII) | |
123 | FLOW_VOLRATE | Volume flow rate in the sampling line | L min-1 | EC raw data files (ASCII) | |
124 | FN2O | Nitrous oxide (N2O) turbulent flux (no storage correction) | nmolN2O m-2 s-1 | Ameriflux | |
125 | FN2O_SSITC_TEST | Results of the quality flagging for FN2O according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
126 | FNO | Nitric oxide (NO) turbulent flux (no storage correction) | nmolNO m-2 s-1 | Ameriflux | |
127 | FNO_SSITC_TEST | Results of the quality flagging for FNO according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
128 | FNO2 | Nitrogen dioxide (NO2) turbulent flux (no storage correction) | nmolNO2 m-2 s-1 | Ameriflux | |
129 | FNO2_SSITC_TEST | Results of the quality flagging for FNO2 according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
130 | FO3 | Ozone (O3) turbulent flux (no storage correction) | nmolO3 m-2 s-1 | Ameriflux | |
131 | FO3_SSITC_TEST | Results of the quality flagging for FO3 according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
132 | FOG | Fog presence | |||
133 | FP | Flux partitioning | ReddyProc | ||
134 | FP__sd | estimated standard devation of X | ReddyProc | ||
135 | FP__sd | estimated standard devation of X | ReddyProc | ||
136 | FP_alpha | canopy light utilization efficiency and represents the initial slope of the light–response curve (daytime partitioning) | ReddyProc | ||
137 | FP_beta | maximum CO2 uptake rate of the canopy at light saturation (μmol m-2 s-1) (daytime partitioning) | μmol m-2 s-1 | ReddyProc | |
138 | FP_dRecPar | records until or after closest record that has a parameter estimate associated (daytime partitioning) | ReddyProc | ||
139 | FP_E0 | activation energy parameter (K) in relationship between temperature and nighttime NEE from day-time partitioning | ReddyProc | ||
140 | FP_GPP2000 | GPP at incoming radiation of 2000 Wm-2, more robust alternative to saturation FP_k | ReddyProc | ||
141 | FP_k | parameter controlling the VPD limitation of GPP (daytime partitioning) (daytime partitioning) | ReddyProc | ||
142 | FP_qc | quality flag of the estimated parameters: 0: good parameter fit, 1: some parameters out of range, required refit, 2: next parameter estimate is more than two weeks away (daytime partitioning) | ReddyProc | ||
143 | FP_RRef | respiration at reference temperature parameter (μmol m-2 s-1 as NEE) in relationship between temperature and nighttime NEE from day-time partitioning | μmol m-2 s-1 | ReddyProc | |
144 | FP_RRef_Night | same as FP_RRef using the same FP_E0, but from intermedate step based on night-time data | ReddyProc | ||
145 | G | Soil heat flux | W m-2 | Ameriflux | |
146 | G_SF | calibration/sensitivity factor of G | uV (W m-2)-1 | ||
147 | GA_DIAG_CODE | GA diagnostic value | # | EC raw data files (ASCII) | |
148 | gas_def_timelag | Flag: whether the reported time lag is the default (T) or calculated (F) | T/F | EddyPro (_full_output_ file) | |
149 | gas_flux | Corrected gas flux | µmol m-2 s-1(†) | EddyPro (_full_output_ file) | |
150 | gas_mixing_ratio | Measured or estimated mixing ratio of gas | µmol mol-1(†) | EddyPro (_full_output_ file) | |
151 | gas_molar_density | Measured or estimated molar density of gas | mmol m-3 | EddyPro (_full_output_ file) | |
152 | gas_mole_fraction | Measured or estimated mole fraction of gas | µmol mol-1(†) | EddyPro (_full_output_ file) | |
153 | gas_scf | Spectral correction factor for gas flux | # | EddyPro (_full_output_ file) | |
154 | gas_strg | Estimate of storage gas flux | µmol s-1 m-2(†) | EddyPro (_full_output_ file) | |
155 | gas_time_lag | Time lag used to synchronize gas time series | s | EddyPro (_full_output_ file) | |
156 | gas_v-adv | Estimate of vertical advection flux | µmol s-1 m-2(†) | EddyPro (_full_output_ file) | |
157 | GPP | Gross Primary Productivity (nighttime-based) | µmolCO2 m-2 s-1 | Ameriflux | |
158 | GPP_CUT_16_f | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_16_f | μmol CO2 m-2 s-1 | ||
159 | GPP_CUT_84_f | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_84_f | μmol CO2 m-2 s-1 | ||
160 | GPP_CUT_REF_f | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_REF_f | μmol CO2 m-2 s-1 | ||
161 | GPP_DT | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning | μmol m-2 s-1 | ReddyProc | |
162 | GPP_DT_CUT_16 | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_16_f | μmol m-2 s-1 | ||
163 | GPP_DT_CUT_84 | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_84_f | μmol m-2 s-1 | ||
164 | GPP_DT_CUT_REF | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_REF_f | μmol m-2 s-1 | ||
165 | GPP_f | Gross primary production, i.e. influx to the land surface (μmol m-2 s-1 as NEE) (nighttime-based) | μmol m-2 s-1 | ReddyProc | |
166 | GS | Stomatal Conductance | mmol H2O m-2 s-1 | ||
167 | GWL | Ground Water Level | m | ||
168 | H | Corrected sensible heat flux (no storage correction) | W m-2 | ||
169 | H | Corrected sensible heat flux | W m-2 | EddyPro (_full_output_ file) | |
170 | H_scf | Spectral correction factor for sensible heat flux | # | EddyPro (_full_output_ file) | |
171 | H_SSITC_TEST | Results of the quality flagging for H according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
172 | H_strg | Estimate of storage sensible heat flux | W m-2 | EddyPro (_full_output_ file) | |
173 | H2O | H2O molar fraction (in humid air), wet mole fraction | umol mol-1 | EC raw data files (ASCII) | |
174 | H2O_CONC | H2O concentration density, molar density | mmol m-3 | EC raw data files (ASCII) | |
175 | H2O_DRY | H2O dry mole fraction (in dry air), mixing ratio, ppt (parts per THOUSAND) | mmol mol-1 | EC raw data files (ASCII) | |
176 | H2O_IRGA70_CMB | H2O concentration from IRGA Li-7000 for chamber system | mmol H2O mol-1 | ||
177 | H2O_IRGA70_EC | H2O concentration from IRGA Li-7000 for eddy system | mmol H2O mol-1 | ||
178 | H2O_IRGA70_PRF | H2O concentration from IRGA Li-7000 for profile | mmol H2O mol-1 | ||
179 | H2O_IRGA72_CMB | H2O concentration from IRGA Li-7200 for chamber system | mmol H2O mol-1 | ||
180 | H2O_IRGA72_EC | H2O concentration from IRGA Li-7200 for eddy system | mmol H2O mol-1 | ||
181 | H2O_IRGA72_PRF | H2O concentration from IRGA Li-7200 for profile | mmol H2O mol-1 | ||
182 | H2O_IRGA75_CMB | H2O concentration from IRGA Li-7500 for chamber system | mmol H2O mol-1 | ||
183 | H2O_IRGA75_EC | H2O concentration from IRGA Li-7500 for eddy system | mmol H2O mol-1 | ||
184 | H2O_IRGA75_PRF | H2O concentration from IRGA Li-7500 for profile | mmol H2O mol-1 | ||
185 | H2O_MIXING_RATIO | Water (H2O) vapor in mole fraction of dry air | mmolH2O mol-1 | Ameriflux | |
186 | H2O_QCL_EC | H2O concentration from QCL for eddy system | ppb (nmol H2O mol-1) | ||
187 | H2O_SIGMA | Standard deviation of water vapor mole fraction | mmolH2O mol-1 | Ameriflux | |
188 | HEAT_ | Heating (prefix, e.g. for sonic heating) | |||
189 | HOUR | 2 digit hour of the day | HH | ||
190 | HS100 | Sonic anemometer Gill HS-100 | - | ||
191 | HS50 | Sonic anemometer Gill HS-50 | - | ||
192 | IN | Incoming | - | ||
193 | INC_X | Inclinometer x | ° | EC raw data files (ASCII) | |
194 | INC_XY | Inclinometer, alternatively x (odd record numbers) and y (even record numbers) | ° | EC raw data files (ASCII) | |
195 | INC_Y | Inclinometer y | ° | EC raw data files (ASCII) | |
196 | INT | Internal | - | ||
197 | IRGA | Infrared Gas Analyzer | - | ||
198 | IRGA62 | Closed-path IRGA LI-6262 | - | ||
199 | IRGA70 | IRGA LI-7000 | - | ||
200 | IRGA72 | Enclosed-path IRGA Li-7200 | |||
201 | IRGA75 | Open-path IRGA Li-7500 | - | ||
202 | L | Monin-Obukhov length | M | EddyPro (_full_output_ file) | |
203 | LE | Corrected latent heat flux | W m-2 | EddyPro (_full_output_ file) | |
204 | LE_f | gapfilled latent heat flux, filtered by all quality checks | W m-2 | ||
205 | LE_orig_QCF0 | measured (not gap-filled) latent heat flux of highest quality | W m-2 | ||
206 | LE_scf | Spectral correction factor for latent heat flux | # | EddyPro (_full_output_ file) | |
207 | LE_SSITC_TEST | Results of the quality flagging for LE according to Foken et al 2004, based on a combination of Steady State and Integral Turbulence Characteristics tests by Foken and Wichura (1996) (i.e., 0, 1, 2) | nondimensional | Ameriflux | |
208 | LE_strg | Estimate of storage latent heat flux | W m-2 | EddyPro (_full_output_ file) | |
209 | LEAF_WET | Leaf wetness, range 0-100 | % | Ameriflux | |
210 | LGR | Los Gatos laser | (instrument) | EC raw data files (ASCII) | |
211 | LS | Lightning strike | unitless | ||
212 | LSD | Lightning strike distance | km | ||
213 | LW | Longwave radiation | W m-2 | ||
214 | LW _IN_RAW | Longwave Incoming Radiation without blackbody correction | W m-2 | ||
215 | LW _OUT_RAW | Longwave Incoming Radiation without blackbody correction | W m-2 | ||
216 | LW_BC_IN | Longwave radiation, below canopy incoming | W m-2 | Ameriflux | |
217 | LW_BC_OUT | Longwave radiation, below canopy outgoing | W m-2 | Ameriflux | |
218 | LW_IN | Longwave radiation, incoming | W m-2 | Ameriflux | |
219 | LW_OUT | Longwave radiation, outgoing | W m-2 | Ameriflux | |
220 | MAX | Maximum | - | ||
221 | max_wind_speed | Maximum instantaneous wind speed | m s-1 | EddyPro (_full_output_ file) | |
222 | MDS | Marginal distribution sampling (Reichstein et al., 2005) | - | Fluxes | |
223 | MET | Meteorological Data | - | ||
224 | MIN | Minimum | - | ||
225 | MIN | Minute | - | ||
226 | MINUTE | 2 digit minute of the day | MM | ||
227 | MIRROR_RINGDOWNTIME | Mirror ring-down time | µs | EC raw data files (ASCII) | |
228 | MO_LENGTH | Monin-Obukhov length | m | Ameriflux | |
229 | MONTH | 2 digit month of year | mm | ||
230 | MSW | MeteoSwiss | |||
231 | N2O | N2O molar fraction (in humid air), wet mole fraction | nmol mol-1, µmol mol-1 | EC raw data files (ASCII) | |
232 | N2O_DRY | N2O dry mole fraction (in dry air), mixing ratio, ppb | nmol mol-1 | EC raw data files (ASCII) | |
233 | N2O_MIXING_RATIO | Nitrous Oxide (N2O) in mole fraction of dry air | nmolN2O mol-1 | Ameriflux | |
234 | N2O_QCL_CMB | N2O concentration from QCL for chamber system | ppb (nmol N2O mol-1) | ||
235 | N2O_QCL_EC | N2O concentration from QCL for eddy system | ppb (nmol N2O mol-1) | ||
236 | N2O_QCL_PRF | N2O concentration from QCL for profile | ppb (nmol N2O mol-1) | ||
237 | NDVI | Normalized Difference Vegetation Index | nondimensional | Ameriflux | |
238 | NEE | Net ecosystem exchange of CO2 | µmol CO2 m-2 s-1 | Fluxes | |
239 | NEE_CUT_16_f | gap-filled NEE, filtered by all quality checks and the 16th percentile USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
240 | NEE_CUT_16_orig | measured (not gap-filled NEE), filtered by all quality checks and the 16th percentile USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
241 | NEE_CUT_84_f | gap-filled NEE, filtered by all quality checks and the 84th percentile USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
242 | NEE_CUT_84_orig | measured (not gap-filled NEE), filtered by all quality checks and the 84th percentile USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
243 | NEE_CUT_REF_f | gap-filled NEE, filtered by all quality checks and the CUT_REF USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
244 | NEE_CUT_REF_orig_QCF0 | measured (not gap-filled) NEE of highest quality, filtered by all quality checks and the CUT_REF percentile USTAR threshold (constant for all years) from FLUXNET analyses | µmol CO2 m-2 s-1 | ||
245 | NEE_U50_QCF0 | measured (not gap-filled) NEE of highest quality, filtered by all quality checks and the median (50th percentile) USTAR threshold | umol CO2 m-2 s-1 | DIIVE | |
246 | NETRAD | Net Radiation | W m-2 | ||
247 | NH4 | Ammonium concentration | µg g-1 soil | ||
248 | NO | Nitric oxide (NO) mole fraction in wet air | nmolNO mol-1 | Ameriflux | |
249 | NO2 | Nitrogen dioxide (NO2) mole fraction in wet air | nmolNO2 mol-1 | Ameriflux | |
250 | NO3 | Nitrate concentration | µg g-1 soil | ||
251 | non_steady_wind | Hard flag for non-steady horizontal test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
252 | NT | Nighttime (used in partitioning) | - | Fluxes | |
253 | NUMVALS | Number of values | # | ||
254 | O2 | Oxygen | Has to be seen when we have the sensors | ||
255 | O3 | Ozone (O3) mole fraction in wet air | nmolO3 mol-1 | Ameriflux | |
256 | OSO | On Site Operation | - | ||
257 | OUT | Outgoing | - | ||
258 | P | Precipitation | mm | FLUXNET | |
259 | PA | Atmospheric Pressure | Pa, kPa, hPa or other | ||
260 | PA_PRF | Atmospheric Pressure in Profile | Pa, kPa, hPa or other | ||
261 | PBLH | Planetary boundary layer height | m | Ameriflux | |
262 | PCH4 | ||||
263 | pitch | Second rotation angle | ° (degrees) | EddyPro (_full_output_ file) | |
264 | PPFD | Photosynthetic photon flux density, without additional suffix it is typically incoming | µmolPhoton m-2 s-1 | ||
265 | PPFD_IN | Photosynthetic photon flux density, incoming | µmolPhoton m-2 s-1 | ||
266 | PPFD_OUT | Photosynthetic photon flux density, outgoing | µmolPhoton m-2 s-1 | ||
267 | PREC | Precipitation | mm | ||
268 | qc_gas_flux | Quality flag for gas flux | # | EddyPro (_full_output_ file) | |
269 | qc_H | Quality flag for sensible heat flux | # | EddyPro (_full_output_ file) | |
270 | qc_LE | Quality flag latent heat flux | # | EddyPro (_full_output_ file) | |
271 | qc_Tau | Quality flag for momentum flux | # | EddyPro (_full_output_ file) | |
272 | QCF_ | (prefix) quality control flag for the respective variable | # | ||
273 | QCF_LE | quality control flag for latent heat flux (0=best, 1=OK, 2=bad), typically for LE_f | # | ||
274 | QCF_NEE | quality control flag for NEE (0=best, 1=OK, 2=bad), typically for NEE_CUT_REF_f | # | ||
275 | R_ref | respiration at reference temperature parameter (μmol m-2 s-1 as NEE) in relationship between temperature and nighttime NEE from night-time partitioning | μmol CO2 m-2 s-1 | ReddyProc | |
276 | rand_err_gas_flux | Random error for gas flux, if selected | µmol s-1 m-2(†) | EddyPro (_full_output_ file) | |
277 | rand_err_H | Random error for momentum flux, if selected | W m-2 | EddyPro (_full_output_ file) | |
278 | rand_err_LE | Random error for latent heat flux, if selected | W m-2 | EddyPro (_full_output_ file) | |
279 | rand_err_Tau | Random error for momentum flux, if selected | kg m-1 s-2 | EddyPro (_full_output_ file) | |
280 | Reco_CUT_16 | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_16_f | umol CO2 m-2 s-1 | ||
281 | Reco_CUT_84 | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_84_f | umol CO2 m-2 s-1 | ||
282 | Reco_CUT_REF | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) (nighttime-based), modelled from NEE_CUT_REF_f | umol CO2 m-2 s-1 | ||
283 | Reco_DT_CUT_16 | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_16_f | umol CO2 m-2 s-1 | ||
284 | Reco_DT_CUT_84 | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_84_f | umol CO2 m-2 s-1 | ||
285 | Reco_DT_CUT_REF | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) estimated by day-time partitioning, modelled from NEE_CUT_REF_f | umol CO2 m-2 s-1 | ||
286 | Reco_f | Ecosystem respiration, i.e. outflux from the land surface (μmol m-2 s-1 as NEE) (nighttime-based) | μmol CO2 m-2 s-1 | ReddyProc | |
287 | Rg | Shortwave radiation, incoming | W m-2 | ReddyProc | |
288 | Rg_f | Gap-filled shortwave radiation, incoming, typically gap-filled using MDS | W m-2 | ReddyProc | |
289 | Rg_orig | Measured (not gap-filled) shortwave radiation, incoming, typically gap-filled using MDS | W m-2 | ReddyProc | |
290 | RH | Relative humidity | % | ||
291 | RH | Ambient relative humidity | 0 | EddyPro (_full_output_ file) | |
292 | roll | Third rotation angle | ° (degrees) | EddyPro (_full_output_ file) | |
293 | RSSI | Mean value of RSSI for LI‑7700, if present | # | EddyPro (_full_output_ file) | |
294 | SDP | Soil Dielectric Permittivity | unitless | ||
295 | skw_kur | Hard flags for individual variables for skewness and kurtosis | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
296 | skw_kur | Soft flags for individual variables for skewness and kurtosis test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
297 | sonic_temperature | Mean temperature of ambient air as measured by the anemometer | K | EddyPro (_full_output_ file) | |
298 | specific_humidity | Ambient specific humidity on a mass basis | kg kg-1 | EddyPro (_full_output_ file) | |
299 | spikes | Hard flags for individual variables for spike test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
300 | SW | Shortwave radiation | W m-2 | ||
301 | SW_IN | Shortwave radiation, incoming | W m-2 | ||
302 | SW_OUT | Shortwave radiation, outgoing | W m-2 | ||
303 | SWC | Soil water content | % | ||
304 | SWP | Soil water potential | kPa | ||
305 | T* | Scaling temperature | K | EddyPro (_full_output_ file) | |
306 | TA | Air temperature | °C | ||
307 | Tair | Air temperature | °C | ReddyProc | |
308 | Tair_f | Gap-filled air temperature, typically gap-filled using MDS | °C | ReddyProc | |
309 | Tair_orig | Measured (not gap-filled) air temperature | °C | ReddyProc | |
310 | TAU | Momentum flux | kg m-1 s-2 | ||
311 | Tau | Corrected momentum flux | kg m-1 s-2 | EddyPro (_full_output_ file) | |
312 | Tau_scf | Spectral correction factor for momentum flux | # | EddyPro (_full_output_ file) | |
313 | Tdew | Ambient dew point temperature | K | EddyPro (_full_output_ file) | |
314 | TG | Grass temperature | deg C | ||
315 | time | Time of the end of the averaging period | HH:MM | EddyPro (_full_output_ file) | |
316 | time_lag | Hard flags for gas concentration for time lag test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
317 | time_lag | Soft flags for gas concentration for time lag test | HFu/v/w/ts/co2 /h2o/ch4/n2 | EddyPro (_full_output_ file) | |
318 | TKE | Turbulent kinetic energy | m2 s-2 | EddyPro (_full_output_ file) | |
319 | TPANEL | Panel temperature | deg C | ||
320 | u* | Friction velocity | m s-1 | EddyPro (_full_output_ file) | |
321 | u_rot | Rotated u wind component (mean wind speed) | m s-1 | EddyPro (_full_output_ file) | |
322 | u_unrot | Wind component along the u anemometer axis | m s-1 | EddyPro (_full_output_ file) | |
323 | un_gas_flux | Uncorrected gas flux | µmol s-1 m-2(†) | EddyPro (_full_output_ file) | |
324 | un_H | Uncorrected sensible heat flux | W m-2 | EddyPro (_full_output_ file) | |
325 | un_LE | Uncorrected latent heat flux | W m-2 | EddyPro (_full_output_ file) | |
326 | un_Tau | Uncorrected momentum flux | kg m-1 s-2 | EddyPro (_full_output_ file) | |
327 | used_records | Number of valid records used for current the averaging period | # | EddyPro (_full_output_ file) | |
328 | USTAR | Friction velocity | m s-1 | ||
329 | Ustar_CUT_REF_Thres | USTAR threshold used for _CUT_REF_ variables | m s-1 | ReddyProc | |
330 | v_rot | Rotated v wind component (should be zero) | m s-1 | EddyPro (_full_output_ file) | |
331 | v_unrot | Wind component along the v anemometer axis | m s-1 | EddyPro (_full_output_ file) | |
332 | var_spikes | Number of spikes detected and eliminated for variable var | # | EddyPro (_full_output_ file) | |
333 | var_var | Variance of variable var | #NAME? | EddyPro (_full_output_ file) | |
334 | VPD | Vapor pressure deficit | kPa or hPa | ||
335 | VPD | Ambient water vapor pressure deficit | Pa | EddyPro (_full_output_ file) | |
336 | VPD_f | Gap-filled vapor pressure deficit, typically gap-filled using MDS | kPa or hPa | ||
337 | VPD_orig | Vapor pressure deficit calculated (not gap-filled) from measured TA and measured RH | kPa or hPa | ||
338 | w/var_cov | Covariance between w and variable var | #NAME? | EddyPro (_full_output_ file) | |
339 | w_rot | Rotated w wind component (should be zero) | m s-1 | EddyPro (_full_output_ file) | |
340 | w_unrot | Wind component along the w anemometer axis | m s-1 | EddyPro (_full_output_ file) | |
341 | water_vapor_density | Ambient mass density of water vapor | kg m-3 | EddyPro (_full_output_ file) | |
342 | wind_dir | Direction from which the wind blows, with respect to Geographic or Magnetic north | ° (degrees) | EddyPro (_full_output_ file) | |
343 | wind_speed | Mean wind speed | m s-1 | EddyPro (_full_output_ file) | |
344 | x_10% | Along-wind distance providing 10% (cumulative) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
345 | x_30% | Along-wind distance providing 30% (cumulative) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
346 | x_50% | Along-wind distance providing 50% (cumulative) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
347 | x_70% | Along-wind distance providing 70% (cumulative) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
348 | x_90% | Along-wind distance providing 90% (cumulative) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
349 | x_offset | Along-wind distance providing | m | EddyPro (_full_output_ file) | |
350 | x_peak | Along-wind distance providing the highest (peak) contribution to turbulent fluxes | m | EddyPro (_full_output_ file) | |
351 | yaw | First rotation angle | ° (degrees) | EddyPro (_full_output_ file) | |
352 | CO2_F_MDS | CO2 mole fraction, gapfilled with MDS; | µmolCO2 mol-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
353 | CO2_F_MDS_QC | Quality flag for CO2_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
354 | EBC_CF_METHOD | Method used to calculate the energy balance closure correction factor; 1 = ECB_CF Method 1, 2 = ECB_CF Method 2, 3 = ECB_CF Method 3. See general description for details | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
355 | EBC_CF_N | Number of data points used to calculate energy closure balance correction factor. Driver data points within sliding window (ECB_CF Method 1) or number of ECB_CF data points (for ECB_CF Methods 2 and 3); for ECB_CF Method 1 (minimum 5, maximum 93) | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
356 | GPP_DT_CUT_MEAN | Gross Primary Production, from Daytime partitioning method, average from GPP versions, each from corresponding NEE_CUT_XX version; average from 40 half-hourly GPP_DT_CUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
357 | GPP_DT_CUT_REF | Gross Primary Production, from Daytime partitioning method, reference selected from GPP versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
358 | GPP_DT_CUT_SE | Standard Error for Gross Primary Production, calculated as (SD(GPP_DT_CUT_XX) / SQRT(40)); SE from 40 half-hourly GPP_DT_CUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
359 | GPP_DT_CUT_USTAR50 | Gross Primary Production, from Daytime partitioning method, based on NEE_CUT_USTAR50; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
360 | GPP_DT_CUT_XX | Gross Primary Production, from Daytime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
361 | GPP_DT_VUT_MEAN | Gross Primary Production, from Daytime partitioning method, average from GPP versions, each from corresponding NEE_VUT_XX version; average from 40 half-hourly GPP_DT_VUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
362 | GPP_DT_VUT_REF | Gross Primary Production, from Daytime partitioning method, reference selected from GPP versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
363 | GPP_DT_VUT_SE | Standard Error for Gross Primary Production, calculated as (SD(GPP_DT_VUT_XX) / SQRT(40)); SE from 40 half-hourly GPP_DT_VUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
364 | GPP_DT_VUT_USTAR50 | Gross Primary Production, from Daytime partitioning method, based on NEE_VUT_USTAR50; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
365 | GPP_DT_VUT_XX | Gross Primary Production, from Daytime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
366 | GPP_NT_CUT_MEAN | Gross Primary Production, from Nighttime partitioning method, average from GPP versions, each from corresponding NEE_CUT_XX version; average from 40 half-hourly GPP_NT_CUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
367 | GPP_NT_CUT_REF | Gross Primary Production, from Nighttime partitioning method, reference selected from GPP versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
368 | GPP_NT_CUT_SE | Standard Error for Gross Primary Production, calculated as (SD(GPP_NT_CUT_XX) / SQRT(40)); SE from 40 half-hourly GPP_NT_CUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
369 | GPP_NT_CUT_USTAR50 | Gross Primary Production, from Nighttime partitioning method, based on NEE_CUT_USTAR50; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
370 | GPP_NT_CUT_XX | Gross Primary Production, from Nighttime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
371 | GPP_NT_VUT_MEAN | Gross Primary Production, from Nighttime partitioning method, average from GPP versions, each from corresponding NEE_VUT_XX version; average from 40 half-hourly GPP_NT_VUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
372 | GPP_NT_VUT_REF | Gross Primary Production, from Nighttime partitioning method, reference selected from GPP versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
373 | GPP_NT_VUT_SE | Standard Error for Gross Primary Production, calculated as (SD(GPP_NT_VUT_XX) / SQRT(40)); SE from 40 half-hourly GPP_NT_VUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
374 | GPP_NT_VUT_USTAR50 | Gross Primary Production, from Nighttime partitioning method, based on NEE_VUT_USTAR50; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
375 | GPP_NT_VUT_XX | Gross Primary Production, from Nighttime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
376 | G_F_MDS | Soil heat flux; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
377 | G_F_MDS_QC | Quality flag of G_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
378 | H_CORR | Sensible heat flux, corrected H_F_MDS by energy balance closure correction factor; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
379 | H_CORR_25 | Sensible heat flux, corrected H_F_MDS by energy balance closure correction factor, 25th percentile; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
380 | H_CORR_75 | Sensible heat flux, corrected H_F_MDS by energy balance closure correction factor, 75th percentile; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
381 | H_CORR_JOINTUNC | Joint uncertainty estimation for H; [SQRT(H_RANDUNC^2 + ((H_CORR75 - H_CORR25) / 1.349)^2)] | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
382 | H_F_MDS | Sensible heat flux, gapfilled using MDS method; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
383 | H_F_MDS_QC | Quality flag for H_F_MDS, H_CORR, H_CORR25, and H_CORR75.; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
384 | H_RANDUNC | Random uncertainty of H, from measured only data; uses only data point where H_F_MDS_QC is 0 and two hierarchical methods (see header and H_RANDUNC_METHOD) | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
385 | H_RANDUNC_METHOD | Method used to estimate the random uncertainty of H; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
386 | H_RANDUNC_N | Number of half-hour data points used to estimate the random uncertainty of H; | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
387 | LE_CORR | Latent heat flux, corrected LE_F_MDS by energy balance closure correction factor; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
388 | LE_CORR_25 | Latent heat flux, corrected LE_F_MDS by energy balance closure correction factor, 25th percentile; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
389 | LE_CORR_75 | Latent heat flux, corrected LE_F_MDS by energy balance closure correction factor, 75th percentile; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
390 | LE_CORR_JOINTUNC | Joint uncertainty estimation for LE; [SQRT(LE_RANDUNC^2 + ((LE_CORR75 - LE_CORR25) / 1.349)^2)] | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
391 | LE_F_MDS | Latent heat flux, gapfilled using MDS method; | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
392 | LE_F_MDS_QC | Quality flag for LE_F_MDS, LE_CORR, LE_CORR25, and LE_CORR75.; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
393 | LE_RANDUNC | Random uncertainty of LE, from measured only data; uses only data point where LE_F_MDS_QC is 0 and two hierarchical methods (see header and LE_RANDUNC_METHOD) | W m-2 | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
394 | LE_RANDUNC_METHOD | Method used to estimate the random uncertainty of LE; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
395 | LE_RANDUNC_N | Number of half-hour data points used to estimate the random uncertainty of LE; | nondimensional | ENERGY PROCESSING | FLUXNET HH (half-hourly) |
396 | LW_IN_ERA | Longwave radiation, incoming, downscaled from ERA, linearly regressed using measured only site data; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
397 | LW_IN_F | Longwave radiation, incoming, consolidated from LW_IN_F_MDS and LW_IN_ERA; LW_IN_F_MDS used if LW_IN_F_MDS_QC is 0 or 1 | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
398 | LW_IN_F_MDS | Longwave radiation, incoming, gapfilled using MDS; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
399 | LW_IN_F_MDS_QC | Quality flag for LW_IN_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
400 | LW_IN_F_QC | Quality flag for LW_IN_F; 0 = measured; 1 = good quality gapfill; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
401 | LW_IN_JSB | Longwave radiation, incoming, calculated from TA_F_MDS, SW_IN_F_MDS, VPD_F_MDS and SW_IN_POT using the JSBACH algorithm (Sonke Zaehle); | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
402 | LW_IN_JSB_ERA | Longwave radiation, incoming, downscaled from ERA, linearly regressed using site level LW_IN_JSB calculated from measured only drivers; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
403 | LW_IN_JSB_F | Longwave radiation, incoming, consolidated from LW_IN_JSB and LW_IN_JSB_ERA; LW_IN_JSB used if LW_IN_JSB_QC is 0 or 1 | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
404 | LW_IN_JSB_F_QC | Quality flag for LW_IN_JSB_F; 0 = calculated from measured drivers; 1 = calculated from good quality gapfilled drivers; 2: downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
405 | LW_IN_JSB_QC | Quality flag for LW_IN_JSB; highest from TA_F_MDS_QC, SW_IN_F_MDS_QC, and VPD_F_MDS_QC, poorest quality prevails | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
406 | LW_OUT | Longwave radiation, outgoing; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
407 | NEE_CUT_MEAN | Net Ecosystem Exchange, using Constant Ustar Threshold (CUT) across years, average from 40 NEE_CUT_XX versions; average from 40 half-hourly NEE_CUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
408 | NEE_CUT_MEAN_QC | Quality flag for NEE_CUT_MEAN, fraction between 0-1 indicating percentage of good quality data; average of percentages of good data (NEE_CUT_XX_QC is 0 or 1) from 40 NEE_CUT_XX_QC | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
409 | NEE_CUT_REF | Net Ecosystem Exchange, using Constant Ustar Threshold (CUT) across years, reference selected on the basis of the model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
410 | NEE_CUT_REF_JOINTUNC | Joint uncertainty estimation for NEE_CUT_REF, including random uncertainty and USTAR filtering uncertainty; [SQRT(NEE_CUT_REF_RANDUNC^2 + ((NEE_CUT_84 - NEE_CUT_16) / 2)^2)] for each half-hour | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
411 | NEE_CUT_REF_QC | Quality flag for NEE_CUT_REF; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
412 | NEE_CUT_REF_RANDUNC | Random uncertainty for NEE_CUT_REF, from measured only data; uses only data points where NEE_CUT_REF_QC is 0 and two hierarchical methods - see header and NEE_CUT_REF_RANDUNC_METHOD | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
413 | NEE_CUT_REF_RANDUNC_METHOD | Method used to estimate the random uncertainty of NEE_CUT_REF; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
414 | NEE_CUT_REF_RANDUNC_N | Number of data points used to estimate the random uncertainty of NEE_CUT_REF; | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
415 | NEE_CUT_SE | Standard Error for NEE_CUT, calculated as SD(NEE_CUT_XX) / SQRT(40); SE from 40 half-hourly NEE_CUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
416 | NEE_CUT_USTAR50 | Net Ecosystem Exchange, using Constant Ustar Threshold (CUT) across years, from 50 percentile of USTAR threshold; | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
417 | NEE_CUT_USTAR50_JOINTUNC | Joint uncertainty estimation for NEE_CUT_USTAR50, including random uncertainty and USTAR filtering uncertainty; [SQRT(NEE_CUT_USTAR50_RANDUNC^2 + ((NEE_CUT_84 - NEE_CUT_16) / 2)^2)] for each half-hour | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
418 | NEE_CUT_USTAR50_QC | Quality flag for NEE_CUT_USTAR50; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
419 | NEE_CUT_USTAR50_RANDUNC | Random uncertainty for NEE_CUT_USTAR50, from measured only data; uses only data points where NEE_CUT_USTAR50_QC is 0 and two hierarchical methods - see header and NEE_CUT_USTAR50_RANDUNC_METHOD | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
420 | NEE_CUT_USTAR50_RANDUNC_METHOD | Method used to estimate the random uncertainty of NEE_CUT_USTAR50; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
421 | NEE_CUT_USTAR50_RANDUNC_N | Number of half-hour data points used to estimate the random uncertainty of NEE_CUT_USTAR50; | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
422 | NEE_CUT_XX | NEE CUT percentiles (approx. percentile indicated by XX, see doc.) calculated from the 40 estimates aggregated at the different time resolutions -- XX = 05, 16, 25, 50, 75, 84, 95; XXth percentile from 40 half-hourly NEE_CUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
423 | NEE_CUT_XX_QC | Quality flag for NEE_CUT_XX -- XX = 05, 16, 25, 50, 75, 84, 95; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
424 | NEE_VUT_MEAN | Net Ecosystem Exchange, using Variable Ustar Threshold (VUT) for each year, average from 40 NEE_VUT_XX versions; average from 40 half-hourly NEE_CUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
425 | NEE_VUT_MEAN_QC | Quality flag for NEE_VUT_MEAN, fraction between 0-1 indicating percentage of good quality data; average of percentages of good data (NEE_VUT_XX_QC is 0 or 1) from 40 NEE_VUT_XX_QC | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
426 | NEE_VUT_REF | Net Ecosystem Exchange, using Variable Ustar Threshold (VUT) for each year, reference selected on the basis of the model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
427 | NEE_VUT_REF_JOINTUNC | Joint uncertainty estimation for NEE_VUT_REF, including random uncertainty and USTAR filtering uncertainty; [SQRT(NEE_VUT_REF_RANDUNC^2 + ((NEE_VUT_84 - NEE_VUT_16) / 2)^2)] for each half-hour | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
428 | NEE_VUT_REF_QC | Quality flag for NEE_VUT_REF; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
429 | NEE_VUT_REF_RANDUNC | Random uncertainty for NEE_VUT_REF, from measured only data; uses only data points where NEE_VUT_REF_QC is 0 and two hierarchical methods - see header and NEE_VUT_REF_RANDUNC_METHOD | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
430 | NEE_VUT_REF_RANDUNC_METHOD | Method used to estimate the random uncertainty of NEE_VUT_REF; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
431 | NEE_VUT_REF_RANDUNC_N | Number of data points used to estimate the random uncertainty of NEE_VUT_REF; | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
432 | NEE_VUT_SE | Standard Error for NEE_VUT, calculated as SD(NEE_VUT_XX) / SQRT(40); SE from 40 half-hourly NEE_CUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
433 | NEE_VUT_USTAR50 | Net Ecosystem Exchange, using Variable Ustar Threshold (VUT) for each year, from 50 percentile of USTAR threshold; | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
434 | NEE_VUT_USTAR50_JOINTUNC | Joint uncertainty estimation for NEE_VUT_USTAR50, including random uncertainty and USTAR filtering uncertainty; [SQRT(NEE_VUT_USTAR50_RANDUNC^2 + ((NEE_VUT_84 - NEE_VUT_16) / 2)^2)] for each half-hour | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
435 | NEE_VUT_USTAR50_QC | Quality flag for NEE_VUT_USTAR50; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
436 | NEE_VUT_USTAR50_RANDUNC | Random uncertainty for NEE_VUT_USTAR50, from measured only data; uses only data points where NEE_VUT_USTAR50_QC is 0 and two hierarchical methods see header and NEE_VUT_USTAR50_RANDUNC_METHOD | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
437 | NEE_VUT_USTAR50_RANDUNC_METHOD | Method used to estimate the random uncertainty of NEE_VUT_USTAR50; 1 = RANDUNC Method 1 (direct SD method), 2 = RANDUNC Method 2 (median SD method) | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
438 | NEE_VUT_USTAR50_RANDUNC_N | Number of half-hour data points used to estimate the random uncertainty of NEE_VUT_USTAR50; | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
439 | NEE_VUT_XX | NEE VUT percentiles (approx. percentile indicated by XX, see doc.) calculated from the 40 estimates aggregated at the different time resolutions -- XX = 05, 16, 25, 50, 75, 84, 95; XXth percentile from 40 half-hourly NEE_VUT_XX | µmolCO2 m-2 s-1 | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
440 | NEE_VUT_XX_QC | Quality flag for NEE_VUT_XX -- XX = 05, 16, 25, 50, 75, 84, 95; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
441 | NETRAD | Net radiation; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
442 | NIGHT | Flag indicating nighttime interval based on SW_IN_POT; 0 = daytime, 1 = nighttime | nondimensional | NET ECOSYSTEM EXCHANGE | FLUXNET HH (half-hourly) |
443 | P | Precipitation; | mm | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
444 | PA | Atmospheric pressure; | kPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
445 | PA_ERA | Atmospheric pressure, downscaled from ERA, linearly regressed using measured only site data; | kPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
446 | PA_F | Atmospheric pressure consolidated from PA and PA_ERA; PA used if measured | kPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
447 | PA_F_QC | Quality flag for PA_F; 0 = measured; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
448 | PPFD_DIF | Photosynthetic photon flux density, diffuse incoming; | µmolPhoton m-2 s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
449 | PPFD_IN | Photosynthetic photon flux density, incoming; | µmolPhoton m-2 s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
450 | PPFD_OUT | Photosynthetic photon flux density, outgoing; | µmolPhoton m-2 s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
451 | P_ERA | Precipitation, downscaled from ERA, linearly regressed using measured only site data; (mm per dataset resolution: either hour or half-hour) | mm | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
452 | P_F | Precipitation consolidated from P and P_ERA; P used if measured (mm per dataset resolution: either hour or half-hour) | mm | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
453 | P_F_QC | Quality flag for P_F; 0 = measured; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
454 | RECO_DT_CUT_MEAN | Ecosystem Respiration, from Daytime partitioning method, average from RECO versions, each from corresponding NEE_CUT_XX version; average from 40 half-hourly RECO_DT_CUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
455 | RECO_DT_CUT_REF | Ecosystem Respiration, from Daytime partitioning method, reference selected from RECO versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
456 | RECO_DT_CUT_SE | Standard Error for Ecosystem Respiration, calculated as (SD(RECO_DT_CUT_XX) / SQRT(40)); SE from 40 half-hourly RECO_DT_CUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
457 | RECO_DT_CUT_USTAR50 | Ecosystem Respiration, from Daytime partitioning method, based on NEE_CUT_USTAR50; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
458 | RECO_DT_CUT_XX | Ecosystem Respiration, from Daytime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
459 | RECO_DT_VUT_MEAN | Ecosystem Respiration, from Daytime partitioning method, average from RECO versions, each from corresponding NEE_VUT_XX version; average from 40 half-hourly RECO_DT_VUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
460 | RECO_DT_VUT_REF | Ecosystem Respiration, from Daytime partitioning method, reference selected from RECO versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
461 | RECO_DT_VUT_SE | Standard Error for Ecosystem Respiration, calculated as (SD(RECO_DT_VUT_XX) / SQRT(40)); SE from 40 half-hourly RECO_DT_VUT_XX | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
462 | RECO_DT_VUT_USTAR50 | Ecosystem Respiration, from Daytime partitioning method, based on NEE_VUT_USTAR50; | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
463 | RECO_DT_VUT_XX | Ecosystem Respiration, from Daytime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | DAYTIME PARTITIONING | FLUXNET HH (half-hourly) |
464 | RECO_NT_CUT_MEAN | Ecosystem Respiration, from Nighttime partitioning method, average from RECO versions, each from corresponding NEE_CUT_XX version; average from 40 half-hourly RECO_NT_CUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
465 | RECO_NT_CUT_REF | Ecosystem Respiration, from Nighttime partitioning method, reference selected from RECO versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
466 | RECO_NT_CUT_SE | Standard Error for Ecosystem Respiration, calculated as (SD(RECO_NT_CUT_XX) / SQRT(40)); SE from 40 half-hourly RECO_NT_CUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
467 | RECO_NT_CUT_USTAR50 | Ecosystem Respiration, from Nighttime partitioning method, based on NEE_CUT_USTAR50; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
468 | RECO_NT_CUT_XX | Ecosystem Respiration, from Nighttime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
469 | RECO_NT_VUT_MEAN | Ecosystem Respiration, from Nighttime partitioning method, average from RECO versions, each from corresponding NEE_VUT_XX version; average from 40 half-hourly RECO_NT_VUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
470 | RECO_NT_VUT_REF | Ecosystem Respiration, from Nighttime partitioning method, reference selected from RECO versions using model efficiency (MEF). The MEF analysis is repeated for each time aggregation; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
471 | RECO_NT_VUT_SE | Standard Error for Ecosystem Respiration, calculated as (SD(RECO_NT_VUT_XX) / SQRT(40)); SE from 40 half-hourly RECO_NT_CUT_XX | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
472 | RECO_NT_VUT_USTAR50 | Ecosystem Respiration, from Nighttime partitioning method, based on NEE_VUT_USTAR50; | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
473 | RECO_NT_VUT_XX | Ecosystem Respiration, from Nighttime partitioning method (with XX = 05, 16, 25, 50, 75, 84, 95); | µmolCO2 m-2 s-1 | NIGHTTIME PARTITIONING | FLUXNET HH (half-hourly) |
474 | RECO_SR | Ecosystem Respiration, from Sundown Respiration partitioning method; | µmolCO2 m-2 s-1 | SUNDOWN | FLUXNET HH (half-hourly) |
475 | RH | Relative humidity, range 0-100; | % | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
476 | SWC_F_MDS_# | Soil water content, gapfilled with MDS (numeric index "#" increases with the depth, 1 is shallowest); | % | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
477 | SWC_F_MDS_#_QC | Quality flag for SWC_F_MDS_#; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
478 | SW_DIF | Shortwave radiation, diffuse incoming; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
479 | SW_IN_ERA | Shortwave radiation, incoming, downscaled from ERA, linearly regressed using measured only site data (negative values set to zero); | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
480 | SW_IN_F | Shortwave radiation, incoming consolidated from SW_IN_F_MDS and SW_IN_ERA (negative values set to zero); SW_IN_F_MDS used if SW_IN_F_MDS_QC is 0 or 1 | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
481 | SW_IN_F_MDS | Shortwave radiation, incoming, gapfilled using MDS (negative values set to zero, e.g., negative values from instrumentation noise); | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
482 | SW_IN_F_MDS_QC | Quality flag for SW_IN_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
483 | SW_IN_F_QC | Quality flag for SW_IN_F; 0 = measured; 1 = good quality gapfill; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
484 | SW_IN_POT | Shortwave radiation, incoming, potential (top of atmosphere); | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
485 | SW_OUT | Shortwave radiation, outgoing; | W m-2 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
486 | TA_ERA | Air temperature, downscaled from ERA, linearly regressed using measured only site data | deg C | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
487 | TA_F | Air temperature, consolidated from TA_F_MDS and TA_ERA; TA_F_MDS used if TA_F_MDS_QC is 0 or 1 | deg C | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
488 | TA_F_MDS | Air temperature, gapfilled using MDS method | deg C | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
489 | TA_F_MDS_QC | Quality flag for TA_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
490 | TA_F_QC | Quality flag for TA_F; 0 = measured; 1 = good quality gapfill; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
491 | TIMESTAMP | ISO timestamp - short format | YYYYMMDDHHMM | TIMEKEEPING | FLUXNET HH (half-hourly) |
492 | TIMESTAMP_END | ISO timestamp end of averaging period - short format | YYYYMMDDHHMM | TIMEKEEPING | FLUXNET HH (half-hourly) |
493 | TIMESTAMP_START | ISO timestamp start of averaging period - short format | YYYYMMDDHHMM | TIMEKEEPING | FLUXNET HH (half-hourly) |
494 | TS_F_MDS_# | Soil temperature, gapfilled with MDS (numeric index "#" increases with the depth, 1 is shallowest); | deg C | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
495 | TS_F_MDS_#_QC | Quality flag for TS_F_MDS_#; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
496 | USTAR | Friction velocity; | m s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
497 | VPD_ERA | Vapor Pressure Deficit, downscaled from ERA, linearly regressed using measured only site data; | hPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
498 | VPD_F | Vapor Pressure Deficit consolidated from VPD_F_MDS and VPD_ERA; VPD_F_MDS used if VPD_F_MDS_QC is 0 or 1 | hPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
499 | VPD_F_MDS | Vapor Pressure Deficit, gapfilled using MDS; | hPa | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
500 | VPD_F_MDS_QC | Quality flag for VPD_F_MDS; 0 = measured; 1 = good quality gapfill; 2 = medium; 3 = poor | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
501 | VPD_F_QC | Quality flag for VPD_F; 0 = measured; 1 = good quality gapfill; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
502 | WD | Wind direction; | Decimal degrees | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
503 | WS | Wind speed; | m s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
504 | WS_ERA | Wind speed, downscaled from ERA, linearly regressed using measured only site data; | m s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
505 | WS_F | Wind speed, consolidated from WS and WS_ERA; WS used if measured | m s-1 | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
506 | WS_F_QC | Quality flag of WS_F; 0 = measured; 2 = downscaled from ERA | nondimensional | MICROMETEOROLOGICAL | FLUXNET HH (half-hourly) |
† Concentrations and fluxes for water vapor are provided as [mmol mol-1] and [mmol m-2 s-1] respectively.
‡ Units depend on the nature of the variable.
References
Last Updated on 4 Nov 2023 00:24