Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2014

Abstract: 

In contribution to the Arctic Observing Network (AON), the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year. This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, daily, seasonal and multi-year time scales. These are the major regulatory drivers of the Arctic climate system and form key linkages and feedbacks between the land surface, the atmosphere and the oceans. We will provide a comprehensive description of the state of the regional Arctic system with respect to these variables, its overall regulation and controlling features and its interaction with the global system. In support of these objectives, a 3m eddy covariance station was established on a low ridge adjacent to Imnavait Creek, Alaska. This station has been continuously monitoring carbon dioxide, water vapor, energy fluxes and various micrometeorological variables.

Project Keywords: 

Data set ID: 

20025

EML revision ID: 

3

Short name: 

2014_IC_1991_gapfilled_20141231
People

Keywords: 

Arctic LTER keywords: 

Dates

Date Range: 

Wednesday, January 1, 2014 to Thursday, December 31, 2015

Publication Date: 

Friday, December 12, 2014

Methods: 

There are two types of data that are collected from each flux station involved in the AON project: high frequency eddy covariance (EC) data and low frequency means of meteorological and subsurface data. On a daily basis, approximately 75Mb of high frequency binary data and 16Kb of low frequency ASCII data is collected. This station uses a CR3000 data logger and a laptop to collect and store data. The CR3000 is used to measure the open-path EC equipment which is sampled at 10Hz. Micrometeorological data is scanned at 0.33Hz and all data points are averaged every half hour. The CRBASIC program that controls the data logger has been written in such a way that only the most basic corrections and filtering are applied to the raw data. These would include shifting the CSAT3 and LI7500 data arrays by 2 and 3 scans respectively to account for the inherent processing delays of these sensors. The high frequency data is processed to yield mass and energy fluxes using a Reynold's decomposition after which the following corrections are applied: the WPL correction, a coordinate rotation, a spectral correction and the 'Burba' correction. Further quality controls flags are generated such as a stationarity test and a foot print analysis. The high frequency processed tables are then combined with the low frequency micrometeorological data after which the data is both filtered and gap-filled. The following procedures are used to filter the data: 1) Parameters that are based on the engineering specifications of each instrument. This normally involves filtering data based on the operating temperature range. 2) Parameters that are based on the Automatic Gain Control of the LI7500 (AGC - lens transmissivity flag). If this value exceeds a given threshold, the lens of the LI7500 is assumed to be obstructed by ice or snow. All measurements from this sensor and all radiation sensors are then assumed to be similarly obstructed and this data is filtered. 3) Any sources of air flow distortion are identified at each site and all EC measurements from those azimuth directions are filtered. Thus, if any wind that originates between these wind rejection angles, then this EC data is filtered out. 4) Parameters for impossible measurements (i.e. negative values from a precipitation gauge or pyranometer.) 5) Parameters for previously flagged data including '-9999'. Data loggers or other processed datasets for which raw data isn't available will sometimes have various flag strings in use. This will standardize everything to 'NaN'. 6) A three-standard deviation filter to get rid of extreme outliers. 7) A similarity/cluster filter - With certain instruments, the appearance of a string of identical values in a time series usually indicates measurement errors. Any time series with clusters of 5 identical values are filtered. The following procedures are used to gap-till the data: 1) A Pth order autoregressive model. Two values for each missing element in a time series are predicted with a forward-looking model and a back-looking model. This function is currently looking 168 elements in both directions in a time series and both predictions are averaged to produce a final estimate. This model is still capable of producing impossible values (i.e. negative measurements from a pyranometer) which are filtered out - thus, there may still be gaps in the time series, but they will be minimized. 2) Filtered values from the beginning and end ranges of a time series are predicted using a variant of the MDV method wherein values are estimated using binned half-hourly averages from the following or the previous seven days.
See the file 2014_IC_1991_metadata_20141231.csv for data collection statistics.

AON Data Processing, Filtering and Gap-Filling

http://aon.iab.uaf.edu/data_info

Sites sampled.

Download a comma delimited (csv) or Excel file (includes metadata and data sheets).

Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy

To cite this data set see the citation example on the LTER Network Data Portal page for this data set.

Variables Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)
Year
  • Label: Year
  • Definition: Year
  • Type: Date/time
  • Date format: YYYY
  • Missing values: None specified
DOY
  • Label: DOY
  • Definition: Day of Year
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
Hour
  • Label: Hour
  • Definition: Decimal hour
  • Type: Physical quantity
  • Unit: hour
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
FC_cw
  • Label: FC_cw
  • Definition: CO2 flux with only basic frequency and WPL corrections (raw NEE)
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_FC_cw
  • Label: qc_FC_cw
  • Definition: qc value of FC_cw
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_cwu_f
  • Label: FC_cwu_f
  • Definition: FC_cw with u* correction filtered
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_cwu_gf
  • Label: FC_cwu_gf
  • Definition: FC_cwu_f gap-filled
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_FC_cwu_gf
  • Label: qc_FC_cwu_gf
  • Definition: qc value of FC_cwu_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_cwbu_f
  • Label: FC_cwbu_f
  • Definition: FC_cwu with Burba correction filtered
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_cwbu_gf
  • Label: FC_cwbu_gf
  • Definition: FC_cwbu_f gap-filled
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_FC_cwbu_gf
  • Label: qc_FC_cwbu_gf
  • Definition: qc value of FC_cwbu_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
FC_cwbNEGu_f
  • Label: FC_cwbNEGu_f
  • Definition: FC_cwu_f with Burba correction only if Tair below -1C and NEE negative
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_cwbNEGu_gf
  • Label: FC_cwbNEGu_gf
  • Definition: FC_cwbNEGu_f gap-filled
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_FC_cwbNEGu_gf
  • Label: qc_FC_cwbNEGu_gf
  • Definition: qc value of FC_cwbNEGu_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
LE_cw_f
  • Label: LE_cw_f
  • Definition: Latent heat flux frequency and WPL corrected filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_LE_cw_f
  • Label: qc_LE_cw_f
  • Definition: qc value of LE_cw
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
LE_cw_gf
  • Label: LE_cw_gf
  • Definition: LE_cw_f gap-filled
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_LE_cw_gf
  • Label: qc_LE_cw_gf
  • Definition: qc value of LE_cw_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
H_c_f
  • Label: H_c_f
  • Definition: Sensible heat flux frequency corrected filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_H_c_f
  • Label: qc_H_c_f
  • Definition: qc value of H_c
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
H_c_gf
  • Label: H_c_gf
  • Definition: H_c_f gap-filled
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_H_c_gf
  • Label: qc_H_c_gf
  • Definition: qc value of H_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
UST
  • Label: UST
  • Definition: u star
  • Type: Physical quantity
  • Unit: meterPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
TAU_c
  • Label: TAU_c
  • Definition: Momentum flux frequency corrected
  • Type: Physical quantity
  • Unit: kilogramPerMeterPerSecondSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_TAU_c
  • Label: qc_TAU_c
  • Definition: qc value of TAU
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
TAU
  • Label: TAU
  • Definition: Uncorrected momentum flux
  • Type: Physical quantity
  • Unit: kilogramPerMeterPerSecondSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
TAU_FreqR
  • Label: TAU_FreqR
  • Definition: Frequency response of Tau
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
H
  • Label: H
  • Definition: Uncorrected sensible heat flux
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
H_FreqR
  • Label: H_FreqR
  • Definition: Frequency response of H
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
LE
  • Label: LE
  • Definition: Uncorrected latent heat flux
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
LE_FreqR
  • Label: LE_FreqR
  • Definition: Frequency response of LE
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC
  • Label: FC
  • Definition: Uncorrection CO2 flux
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FC_FreqR
  • Label: FC_FreqR
  • Definition: Frequency response of FC
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Rg_f
  • Label: Rg_f
  • Definition: Downwelling short wave radiation filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Rg_gf
  • Label: Rg_gf
  • Definition: Rg_f gap-filled
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_Rg_gf
  • Label: qc_Rg_gf
  • Definition: qc value of Rg_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
VPD_f
  • Label: VPD_f
  • Definition: Vapor pressure deficit filtered
  • Type: Physical quantity
  • Unit: kilopascal
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
VPD_gf
  • Label: VPD_gf
  • Definition: VPD_f gap-filled
  • Type: Physical quantity
  • Unit: kilopascal
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_VPD_gf
  • Label: qc_VPD_gf
  • Definition: qc value of VPD_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
RH_f
  • Label: RH_f
  • Definition: Relative humidity filtered
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
RH_gf
  • Label: RH_gf
  • Definition: RH_f gap-filled
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_RH_gf
  • Label: qc_RH_gf
  • Definition: qc value of RH_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Ta_f
  • Label: Ta_f
  • Definition: Ambient air temperature filtered
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Ta_gf
  • Label: Ta_gf
  • Definition: Ta_f gap-filled
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_Ta_gf
  • Label: qc_Ta_gf
  • Definition: qc value of Ta_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Tsoil_f
  • Label: Tsoil_f
  • Definition: Surface soil temperature filtered
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Tsoil_gf
  • Label: Tsoil_gf
  • Definition: Tsoil_f gap-filled
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_Tsoil_gf
  • Label: qc_Tsoil_gf
  • Definition: qc value of Tsoil_gf
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
PA_1
  • Label: PA_1
  • Definition: Ambient atmospheric pressure
  • Type: Physical quantity
  • Unit: kilopascal
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Rg_out_f
  • Label: Rg_out_f
  • Definition: Upwelling short wave radiation
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
RNET_f
  • Label: RNET_f
  • Definition: Net radiation
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
PAR_f
  • Label: PAR_f
  • Definition: Downwelling photosynthetically active radiation
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
PAR_out_f
  • Label: PAR_out_f
  • Definition: Upwelling photosynthetically active radiation
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
PRECIP
  • Label: PRECIP
  • Definition: Rainfall
  • Type: Physical quantity
  • Unit: millimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
SnowD_f
  • Label: SnowD_f
  • Definition: Snow Depth filtered
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
G1_f
  • Label: G1_f
  • Definition: Ground heat flux filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
G2_f
  • Label: G2_f
  • Definition: Ground heat flux filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
G3_f
  • Label: G3_f
  • Definition: Ground heat flux filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
G4_f
  • Label: G4_f
  • Definition: Ground heat flux filtered
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
SWC_1_f
  • Label: SWC_1_f
  • Definition: Volumetric soil water content filtered
  • Type: Physical quantity
  • Unit: meterCubedPerMeterCubed
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
SWC_2_f
  • Label: SWC_2_f
  • Definition: Volumetric soil water content filtered
  • Type: Physical quantity
  • Unit: meterCubedPerMeterCubed
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Tsoil_2_f
  • Label: Tsoil_2_f
  • Definition: Surface soil temperature filtered
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
AGC
  • Label: AGC
  • Definition: AGC diagnostic
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
CO2
  • Label: CO2
  • Definition: Ambient CO2 concentration
  • Type: Physical quantity
  • Unit: micromolePerMole
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
ALBEDO_f
  • Label: ALBEDO_f
  • Definition: Albedo
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
WS_1
  • Label: WS_1
  • Definition: Wind speed
  • Type: Physical quantity
  • Unit: meterPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
WD
  • Label: WD
  • Definition: Wind direction
  • Type: Physical quantity
  • Unit: degree
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
cs616_1
  • Label: cs616_1
  • Definition: Raw probe signal
  • Type: Physical quantity
  • Unit: microsecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
cs616_2
  • Label: cs616_2
  • Definition: Raw probe signal
  • Type: Physical quantity
  • Unit: microsecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
PotRad
  • Label: PotRad
  • Definition: Potential Radiation
  • Type: Physical quantity
  • Unit: wattPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FP_NEEnight
  • Label: FP_NEEnight
  • Definition: Nightime NEE for flux partitioning
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
FP_Temp
  • Label: FP_Temp
  • Definition: Air temperature for flux partitioning
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
E_0
  • Label: E_0
  • Definition: Temperature sensitivity coefficient of respiration
  • Type: Physical quantity
  • Unit: kelvin
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
R_ref
  • Label: R_ref
  • Definition: Reference respiration for partitioning
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Reco
  • Label: Reco
  • Definition: Ecosystem Respiration raw partitioned
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
Reco_f
  • Label: Reco_f
  • Definition: Ecosystem Respiration filtered partitioned
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
GPP
  • Label: GPP
  • Definition: GPP raw partitioned
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
GPP_f
  • Label: GPP_f
  • Definition: GPP filtered partitioned GPP
  • Type: Physical quantity
  • Unit: micromolePerMeterSquaredPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured
qc_GPP
  • Label: qc_GPP
  • Definition: qc value for partitioned GPP
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NaN = Missing or Not Measured