thule_plot_flux_2013.csv
net ecosystem exchange, ecosystem respiration, and calculated gross primary productivity within a wet sedge meadow near Thule Air Base, Greenland. Total of 21 plots. Plots consist of a collar for flux measurements 6" in diameter. Data set also includes important met data for predicting carbon f...
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Arctic Data Center
2014
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dataone:urn:uuid:3dc6c948-78eb-4eee-addf-c3456a28dc50 2024-06-03T18:46:52+00:00 thule_plot_flux_2013.csv ENVELOPE(-68.6,-68.6,76.6,76.6) 2014-08-21T13:44:42Z https://search.dataone.org/view/urn:uuid:3dc6c948-78eb-4eee-addf-c3456a28dc50 unknown Arctic Data Center EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > CHEMICAL METERS/ANALYZERS > LICOR GAS EXCHANGE SYSTEM FIELD SURVEY Dataset 2014 dataone:urn:node:ARCTIC 2024-06-03T18:06:49Z net ecosystem exchange, ecosystem respiration, and calculated gross primary productivity within a wet sedge meadow near Thule Air Base, Greenland. Total of 21 plots. Plots consist of a collar for flux measurements 6" in diameter. Data set also includes important met data for predicting carbon flux (see also thule_met_2013.xls). LiCor 6400 with custom chamber. Data were collected every few days, weather permitting. Measurements consisted of a light measurement (net ecosystem exchange) followed by a dark measurement (ecosystem respiration) where the chamber was covered in dense shade cloth. Measurement was the change in CO2 in the chamber over a two minute period. NEE and ER were calculated from this change and adjusted for water vapor concentration in the chamber and exchange of air in the open system. GEP was calculated from NEE and ER. Convention in this data set is uptake of CO2 is a negative value, release of CO2 is a positive value. Flux values were matched to the nearest-in-time 5-min met station data. Surface temperature was measured with a thermocouple attached to the LiCor 6400. csv, comma-delimited text. Data columns are: day of year, plot number, hour, minute, second, fractional day of year, net ecosystem exchange (umol m-2 s-1), ecosystem respiration (umol m-2 s-1), gross ecosystem productivity (umol m-2 s-1), PAR from the sensor on the licor (umol m-2 s-1), temperature of the ground surface (C), incoming PAR (umol m-2 s-1), reflected PAR (umol m-2 s-1), albedo (%), air temperature (C), relative humidity (%), volumetric water content (%), saNDVI, and soil temperature (C). Data set contains all measurements, not processed for non-sensical values such as GEP >0. See thule_met_2013.xls for information on met station data, and thule_flux_plot_ndvi_2013.csv for information on NDVI. Dataset Greenland Thule Air Thule Air Base Thule Tundra Arctic Data Center (via DataONE) Greenland Thule Air Base ENVELOPE(-68.703,-68.703,76.531,76.531) ENVELOPE(-68.6,-68.6,76.6,76.6) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > CHEMICAL METERS/ANALYZERS > LICOR GAS EXCHANGE SYSTEM FIELD SURVEY |
spellingShingle |
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > CHEMICAL METERS/ANALYZERS > LICOR GAS EXCHANGE SYSTEM FIELD SURVEY thule_plot_flux_2013.csv |
topic_facet |
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > CHEMICAL METERS/ANALYZERS > LICOR GAS EXCHANGE SYSTEM FIELD SURVEY |
description |
net ecosystem exchange, ecosystem respiration, and calculated gross primary productivity within a wet sedge meadow near Thule Air Base, Greenland. Total of 21 plots. Plots consist of a collar for flux measurements 6" in diameter. Data set also includes important met data for predicting carbon flux (see also thule_met_2013.xls). LiCor 6400 with custom chamber. Data were collected every few days, weather permitting. Measurements consisted of a light measurement (net ecosystem exchange) followed by a dark measurement (ecosystem respiration) where the chamber was covered in dense shade cloth. Measurement was the change in CO2 in the chamber over a two minute period. NEE and ER were calculated from this change and adjusted for water vapor concentration in the chamber and exchange of air in the open system. GEP was calculated from NEE and ER. Convention in this data set is uptake of CO2 is a negative value, release of CO2 is a positive value. Flux values were matched to the nearest-in-time 5-min met station data. Surface temperature was measured with a thermocouple attached to the LiCor 6400. csv, comma-delimited text. Data columns are: day of year, plot number, hour, minute, second, fractional day of year, net ecosystem exchange (umol m-2 s-1), ecosystem respiration (umol m-2 s-1), gross ecosystem productivity (umol m-2 s-1), PAR from the sensor on the licor (umol m-2 s-1), temperature of the ground surface (C), incoming PAR (umol m-2 s-1), reflected PAR (umol m-2 s-1), albedo (%), air temperature (C), relative humidity (%), volumetric water content (%), saNDVI, and soil temperature (C). Data set contains all measurements, not processed for non-sensical values such as GEP >0. See thule_met_2013.xls for information on met station data, and thule_flux_plot_ndvi_2013.csv for information on NDVI. |
format |
Dataset |
title |
thule_plot_flux_2013.csv |
title_short |
thule_plot_flux_2013.csv |
title_full |
thule_plot_flux_2013.csv |
title_fullStr |
thule_plot_flux_2013.csv |
title_full_unstemmed |
thule_plot_flux_2013.csv |
title_sort |
thule_plot_flux_2013.csv |
publisher |
Arctic Data Center |
publishDate |
2014 |
url |
https://search.dataone.org/view/urn:uuid:3dc6c948-78eb-4eee-addf-c3456a28dc50 |
op_coverage |
ENVELOPE(-68.6,-68.6,76.6,76.6) |
long_lat |
ENVELOPE(-68.703,-68.703,76.531,76.531) ENVELOPE(-68.6,-68.6,76.6,76.6) |
geographic |
Greenland Thule Air Base |
geographic_facet |
Greenland Thule Air Base |
genre |
Greenland Thule Air Thule Air Base Thule Tundra |
genre_facet |
Greenland Thule Air Thule Air Base Thule Tundra |
_version_ |
1800872337096048640 |