CO2 Net Ecosystem Exchange using Eddy Covariance — GLBRC Scale-up Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Gap-filled net ecosystem exchange data from the University of Toledo Eddy Covariance towers. The data here include the original data and the gap filled data.
Gap filling is done using the web application at:
http://www.bgc-jena.mpg.de/~MDIwork/eddyproc/ .
This link helps describe some of the output variables:
http://www.bgc-jena.mpg.de/~MDIwork/eddyproc/output.php
This datatable is part of the CO2 Net Ecosystem Exchange using Eddy Covariance method dataset.
The eddy covariance tower method is used to make continuous measurements of the carbon dioxide net ecosystem exchange (NEE). There are 7 towers on KBS GLBRC scale-up fields; 3 at Lux Arbor Reserve and 4 at the the Marshall Farms fields.
Note
| Experiment: | GLBRC Scale-up Experiment |
| Data available from: | January 2009 to January 2015 |
| Dataset: | GLBRC084 |
| Datatable ID: | GLBRC084-003.217 |
| Repository link: | |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | sample date and time at the start of the half hour measurement. | |
| tower | tower identifier | |
| treatment | ||
| description | ||
| nee | Net Ecosystem Exchange -high quality data only, only data with QC rating of 0 | |
| le | Latent heat flux density | |
| qcle | quality criterion for LE (0 to 2, with 0 best and 2 worst) | |
| h | Sensible heat flux density | |
| qch | quality criterion for H (0 to 2, with 0 best and 2 worst) | |
| rg | Incoming solar radiation | |
| tair | Air temperature [measured using HMPC45-C, missing data gapfilled from neighbouring stations] | C |
| tsoil | Soil temperature [measured using 107 soil temperature probe, missing data gapfilled from neighbouring stations] | C |
| rh | Relative humidity [measured using HMPC45-C, missing data gapfilled from neighbouring stations] | % |
| ustar | friction velocity [not gapfilled] | |
| vpd | vapour pressure deficit - computed from Tair and rH | |
| neeorig | Net Ecosystem Exchange -including all data regardless of data quality | |
| qcnee | quality criterion for NEE (0 to 2, with 0 best and 2 worst) | |
| nee f | Net Ecosystem Exchange - gapfilled | |
| nee fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| nee fwin | fwin - window size used for gapfilling. 0 = original data available | |
| nee fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| nee fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | |
| nee fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| nee fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| le f | Latent heat flux density - gapfilled | |
| le fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| le fwin | fwin - window size used for gapfilling. 0 = original data available | |
| le fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| le fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | |
| le fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| le fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| h f | Sensible heat flux density - gapfilled | |
| h fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| h fwin | fwin - window size used for gapfilling. 0 = original data available | |
| h fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| h fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | |
| h fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| h fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| tair f | air temperature - the same as in Tair | C |
| tair fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| tair fwin | fwin - window size used for gapfilling. 0 = original data available | |
| tair fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| tair fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | C |
| tair fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| tair fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| rg f | Incoming solar radiation - with some gaps filled but may not be all | |
| rg fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| rg fwin | fwin - window size used for gapfilling. 0 = original data available | |
| rg fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| rg fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | |
| rg fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| rg fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| vpd f | vapour pressure deficit (kPa) - the same as in VPD | |
| vpd fmet | fmet - method used for gapfilling. 0 = original data available, 1 = Inferred from marginal distribution of Rg, Tair, and VPD; 2 = Inferred from Rg only; 3 = Inferred from time of the day only (mean diurnal variation). | |
| vpd fwin | fwin - window size used for gapfilling. 0 = original data available | |
| vpd fn | fn - The number of values that were averaged to fill the gap. If the original data was available this is set to -9999 | |
| vpd fs | fs - The standard deviation of the values that were averaged to fill the gap. If the original data was available this is set to -9999. | |
| vpd fqc | fqc - a synthetic quality assigned for gapfilling. 0 = original data available, 1 = most reliable, 2 =medium, 3=least reliable. | |
| vpd fqcok | fqcOK - A synthetic QC that is 0 when _fqc is > 1 , otherwise 1. When aggregating to daily, weekly etc. timesteps, this flag tells which fraction of the data was original or filled with most reliable data. | |
| nee f unc | Net Ecosystem Exchange - uncertainty for all data points, gapfilled and non-gapfilled | |
| le f unc | Latent Heat Flux Density - uncertainty for all data points, gapfilled and non-gapfilled | |
| h f unc | Sensible Heat Flux Density - uncertainty for all data points, gapfilled and non-gapfilled | |
| nee rgaps | random gap filled NEE | |
| le rgaps | random gap filled latent heat flux density | |
| h rgaps | random gap filled sensible heat flux density | |
| tair rgaps | ||
| rg rgaps | random gap filled incoming solar radiation | |
| vpd rgaps | ||
| rg rgaps f | ||
| rg rgaps fmet | ||
| rg rgaps fwin | ||
| rg rgaps fn | ||
| rg rgaps fs | ||
| rg rgaps fqc | ||
| rg rgas fqcok | ||
| tair rgaps f | ||
| tair rgaps fmet | ||
| tair rgaps fwin | ||
| tair rgaps fn | ||
| tair rgaps fs | ||
| tair rgaps fqc | ||
| tair rgaps fqcok | ||
| vpd rgaps f | ||
| vpd rgaps fmet | ||
| vpd rgaps fwin | ||
| vpd rgaps fn | ||
| vpd rgaps fs | ||
| vpd rgaps fqc | ||
| vpd rgaps f | ||
| nee rgaps f | ||
| nee rgaps fmet | ||
| nee rgaps fwin | ||
| nee rgaps fn | ||
| nee rgaps fs | ||
| nee rgaps fqc | ||
| nee rgaps fqcok | ||
| le rgaps f | ||
| le rgaps fmet | ||
| le rgaps fwin | ||
| le rgaps fn | ||
| le rgaps fs | ||
| le rgaps fqc | ||
| le rgaps fqcok | ||
| h rgaps f | ||
| h rgaps fmet | ||
| h rgaps fwin | ||
| h rgaps fn | ||
| h rgaps fs | ||
| h rgaps fqc | ||
| h rgaps fqcok | ||
| nee fmet unc | ||
| nee fwin unc | ||
| nee fn unc | ||
| nee fs unc | ||
| nee fqc unc | ||
| nee fqcok unc | ||
| nee fsrob unc | ||
| nee fmed unc | ||
| le fmet unc | ||
| le fwin unc | ||
| le fn unc | ||
| le fs unc | ||
| le fqc unc | ||
| le fsrob unc | ||
| le fmed unc | ||
| h fmet unc | ||
| h fwin unc | ||
| h fn unc | ||
| h fs unc | ||
| h fqc unc | ||
| h fqcok unc | ||
| h fsrob unc | ||
| h fmed unc | ||
| neenight | ||
| e0 2 from tair | ||
| rrefopt orde0 2 from | ||
| reco | ||
| gpp f | ||
| gpp fqc | ||
| gpp fmet | ||
| gpp fwin | to be filled |
| Protocols |
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GLBRC data is not yet publicly available.
Sign in to request the dataData Excerpt
| sample_date | tower | treatment | description | nee | le | qcle | h | qch | rg | tair | tsoil | rh | ustar | vpd | neeorig | qcnee | nee_f | nee_fmet | nee_fwin | nee_fn | nee_fs | nee_fqc | nee_fqcok | le_f | le_fmet | le_fwin | le_fn | le_fs | le_fqc | le_fqcok | h_f | h_fmet | h_fwin | h_fn | h_fs | h_fqc | h_fqcok | tair_f | tair_fmet | tair_fwin | tair_fn | tair_fs | tair_fqc | tair_fqcok | rg_f | rg_fmet | rg_fwin | rg_fn | rg_fs | rg_fqc | rg_fqcok | vpd_f | vpd_fmet | vpd_fwin | vpd_fn | vpd_fs | vpd_fqc | vpd_fqcok | nee_f_unc | le_f_unc | h_f_unc | nee_rgaps | le_rgaps | h_rgaps | tair_rgaps | rg_rgaps | vpd_rgaps | rg_rgaps_f | rg_rgaps_fmet | rg_rgaps_fwin | rg_rgaps_fn | rg_rgaps_fs | rg_rgaps_fqc | rg_rgaps_fqcok | tair_rgaps_f | tair_rgaps_fmet | tair_rgaps_fwin | tair_rgaps_fn | tair_rgaps_fs | tair_rgaps_fqc | tair_rgaps_fqcok | vpd_rgaps_f | vpd_rgaps_fmet | vpd_rgaps_fwin | vpd_rgaps_fn | vpd_rgaps_fs | vpd_rgaps_fqc | vpd_rgaps_f | nee_rgaps_f | nee_rgaps_fmet | nee_rgaps_fwin | nee_rgaps_fn | nee_rgaps_fs | nee_rgaps_fqc | nee_rgaps_fqcok | le_rgaps_f | le_rgaps_fmet | le_rgaps_fwin | le_rgaps_fn | le_rgaps_fs | le_rgaps_fqc | le_rgaps_fqcok | h_rgaps_f | h_rgaps_fmet | h_rgaps_fwin | h_rgaps_fn | h_rgaps_fs | h_rgaps_fqc | h_rgaps_fqcok | nee_fmet_unc | nee_fwin_unc | nee_fn_unc | nee_fs_unc | nee_fqc_unc | nee_fqcok_unc | nee_fsrob_unc | nee_fmed_unc | le_fmet_unc | le_fwin_unc | le_fn_unc | le_fs_unc | le_fqc_unc | le_fqcok_unc | le_fsrob_unc | le_fmed_unc | h_fmet_unc | h_fwin_unc | h_fn_unc | h_fs_unc | h_fqc_unc | h_fqcok_unc | h_fsrob_unc | h_fmed_unc | neenight | e0_2_from_tair | rrefopt_orde0_2_from | reco | gpp_f | gpp_fqc | gpp_fmet | gpp_fwin |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009-01-01 05:00:00 +0000 | 4 | L1 | AGR-Corn | 0.0818 | 3.0 | 3.0 | 3.0 | 0.07246 | 2.0 | 0.0 | 10.17739 | 3.0 | 3.0 | 3.0 | 2.25963 | 2.0 | 0.0 | -16.40865 | 3.0 | 3.0 | 4.0 | 11.81468 | 2.0 | 0.0 | -11.73045 | 3.0 | 1.0 | 2.0 | 0.11858 | 1.0 | 1.0 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | 0.29478 | 3.0 | 1.0 | 2.0 | 0.00651 | 1.0 | 1.0 | 0.27205 | 12.40112 | -7.97082 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | -11.73045 | 3.0 | 1.0 | 2.0 | 0.11858 | 1.0 | 1.0 | 0.29478 | 3.0 | 1.0 | 2.0 | 0.00651 | 1.0 | 0.29478 | 0.10473 | 3.0 | 3.0 | 2.0 | 0.08571 | 2.0 | 0.0 | 10.35149 | 3.0 | 3.0 | 2.0 | 3.16701 | 2.0 | 0.0 | -11.94092 | 3.0 | 3.0 | 3.0 | 9.46661 | 2.0 | 0.0 | 3.0 | 14.0 | 10.0 | 0.352 | 3 | 0 | 0.11998 | 0.17367 | 3.0 | 14.0 | 13.0 | 11.44963 | 3 | 0 | 10.88838 | 12.59091 | 3.0 | 14.0 | 14.0 | 10.27354 | 3 | 0 | 10.98244 | -5.31651 | 176.70079 | 0.38446 | 0.04022 | -0.04158 | 2 | 3 | 3 | ||||||||||||||||||||
| 2009-01-01 05:00:00 +0000 | 5 | L2 | AGR-Switchgrass | 0.66174 | 3.0 | 3.0 | 3.0 | 0.12028 | 2.0 | 0.0 | 11.26638 | 3.0 | 3.0 | 3.0 | 4.44574 | 2.0 | 0.0 | -25.98714 | 3.0 | 3.0 | 3.0 | 5.41743 | 2.0 | 0.0 | -6.0885 | 3.0 | 1.0 | 2.0 | 0.20662 | 1.0 | 1.0 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | 1.66752 | 3.0 | 1.0 | 2.0 | 0.07859 | 1.0 | 1.0 | 0.55352 | 15.81367 | -8.28496 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | -6.0885 | 3.0 | 1.0 | 2.0 | 0.20662 | 1.0 | 1.0 | 1.66752 | 3.0 | 1.0 | 2.0 | 0.07859 | 1.0 | 1.66752 | 0.59806 | 3.0 | 3.0 | 2.0 | 0.06784 | 2.0 | 0.0 | 11.42271 | 3.0 | 3.0 | 2.0 | 6.27555 | 2.0 | 0.0 | -25.43912 | 3.0 | 3.0 | 2.0 | 7.54289 | 2.0 | 0.0 | 3.0 | 14.0 | 10.0 | 0.38342 | 3 | 0 | 0.42885 | 0.56434 | 3.0 | 14.0 | 12.0 | 12.75472 | 3 | 0 | 11.1186 | 16.46886 | 3.0 | 14.0 | 12.0 | 12.47434 | 3 | 0 | 10.46428 | -4.3805 | 101.92054 | 0.49143 | 0.20341 | -0.45833 | 2 | 3 | 3 | ||||||||||||||||||||
| 2009-01-01 05:00:00 +0000 | 6 | L3 | AGR-Prairie | -0.27706 | 3.0 | 3.0 | 3.0 | 0.35277 | 2.0 | 0.0 | 13.95055 | 3.0 | 3.0 | 3.0 | 4.42553 | 2.0 | 0.0 | -22.46563 | 3.0 | 3.0 | 4.0 | 16.32549 | 2.0 | 0.0 | -11.73045 | 3.0 | 1.0 | 2.0 | 0.11858 | 1.0 | 1.0 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | 0.68267 | 3.0 | 1.0 | 2.0 | 0.03167 | 1.0 | 1.0 | 0.79831 | 15.13899 | -10.29527 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | -11.73045 | 3.0 | 1.0 | 2.0 | 0.11858 | 1.0 | 1.0 | 0.68267 | 3.0 | 1.0 | 2.0 | 0.03167 | 1.0 | 0.68267 | 4.24654 | 3.0 | 7.0 | 2.0 | 5.9799 | 3.0 | 0.0 | 30.29542 | 3.0 | 7.0 | 2.0 | 1.23104 | 3.0 | 0.0 | -0.02388 | 3.0 | 7.0 | 3.0 | 1.41604 | 3.0 | 0.0 | 3.0 | 14.0 | 10.0 | 2.72219 | 3 | 0 | 0.42289 | -0.0732 | 3.0 | 14.0 | 12.0 | 10.88068 | 3 | 0 | 8.39462 | 11.64694 | 3.0 | 14.0 | 13.0 | 13.41586 | 3 | 0 | 4.84197 | -1.21884 | 196.11646 | 0.29999 | 0.02449 | 0.30155 | 2 | 3 | 3 | ||||||||||||||||||||
| 2009-01-01 05:00:00 +0000 | 3 | M1 | CRP-Corn | 0.37362 | 3.0 | 3.0 | 3.0 | 0.20935 | 2.0 | 0.0 | 13.48454 | 3.0 | 3.0 | 3.0 | 2.62444 | 2.0 | 0.0 | -28.44893 | 3.0 | 3.0 | 3.0 | 9.83988 | 2.0 | 0.0 | -9.5592 | 3.0 | 1.0 | 2.0 | 0.14397 | 1.0 | 1.0 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | 1.57111 | 3.0 | 1.0 | 2.0 | 0.03545 | 1.0 | 1.0 | 0.49305 | 11.56105 | -16.91584 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | -9.5592 | 3.0 | 1.0 | 2.0 | 0.14397 | 1.0 | 1.0 | 1.57111 | 3.0 | 1.0 | 2.0 | 0.03545 | 1.0 | 1.57111 | 0.37362 | 3.0 | 3.0 | 3.0 | 0.20935 | 2.0 | 0.0 | 13.48454 | 3.0 | 3.0 | 3.0 | 2.62444 | 2.0 | 0.0 | -28.44893 | 3.0 | 3.0 | 3.0 | 9.83988 | 2.0 | 0.0 | 3.0 | 14.0 | 10.0 | 0.92345 | 3 | 0 | 0.40822 | 0.71881 | 3.0 | 14.0 | 12.0 | 12.34607 | 3 | 0 | 12.94393 | 9.64372 | 3.0 | 14.0 | 13.0 | 19.80736 | 3 | 0 | 6.35518 | -2.9632 | 77.60322 | 1.07375 | 0.4559 | 0.08229 | 2 | 3 | 3 | ||||||||||||||||||||
| 2009-01-01 05:00:00 +0000 | 2 | M2 | CRP-Prairie | 0.51215 | 3.0 | 3.0 | 3.0 | 0.07101 | 2.0 | 0.0 | 11.90475 | 3.0 | 3.0 | 3.0 | 3.343 | 2.0 | 0.0 | -17.19528 | 3.0 | 3.0 | 4.0 | 11.70731 | 2.0 | 0.0 | -12.45991 | 3.0 | 1.0 | 2.0 | 0.45982 | 1.0 | 1.0 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | 0.38524 | 3.0 | 1.0 | 2.0 | 0.0023 | 1.0 | 1.0 | 0.69963 | 11.44436 | -15.26723 | 0.0 | 3.0 | 1.0 | 2.0 | 0.0 | 1.0 | 1.0 | -12.45991 | 3.0 | 1.0 | 2.0 | 0.45982 | 1.0 | 1.0 | 0.38524 | 3.0 | 1.0 | 2.0 | 0.0023 | 1.0 | 0.38524 | 0.49239 | 3.0 | 3.0 | 2.0 | 0.088 | 2.0 | 0.0 | 10.40523 | 3.0 | 3.0 | 2.0 | 2.97658 | 2.0 | 0.0 | -16.2994 | 3.0 | 3.0 | 3.0 | 14.16955 | 2.0 | 0.0 | 3.0 | 14.0 | 13.0 | 0.6612 | 3 | 0 | 0.35748 | 0.49532 | 3.0 | 14.0 | 13.0 | 12.83607 | 3 | 0 | 6.04668 | 5.11551 | 3.0 | 14.0 | 14.0 | 17.01578 | 3 | 0 | 14.48093 | -9.58267 | 125.4452 | 2.03086 | 0.3777 | -0.13445 | 2 | 3 | 3 |