Gas flux (EC1-Smart)

Eddy covariance flux measurements started in 2012. The mast (2 m high) is located about 100 m east of Arctic Station in a moist tundra site called Østerlien. It is a gentle south sloping area covered by low vegetation/dwarf shrubs. The system consist of a LICOR 7200 RS enclosed gas analyzer and a Gill HS-50 sonic anemometer. Data were logged at 20 Hz and fluxes processed on a 30 minute basis using EddyPro software. The time stamp refer to UTC-3. This data-set runs from September 2019 onwards. In September 2019 a SmartFlux System was installed to synchronize measured gas concentrations and anomometer data. At the same site (10 meter north of the eddy covariance mast) there is an automatic weather station AWS2. Data from AWS2 are found under Meteorology (AWS2-Meteorology) and under Soil (AWS2-GroundTemperatureP1, P2, AWS2-SoilMoisture, AWS2-SoilHeatFlux) and under Snow (AWS2-SnowDepth, AWS2-SnowTemperature).

Data and Resources

This dataset has no data

Additional Info

Field Value
Source https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33
Version 1
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Temporal coverage 1
Temporal coverage start
2019-09-06
Temporal coverage end
2023-12-14
Spatial coverage { "coordinates": [ [ [ -53.514129638671875, 69.25348663330078 ], [ -53.514129638671875, 69.25348663330078 ], [ -53.514129638671875, 69.25348663330078 ], [ -53.514129638671875, 69.25348663330078 ] ] ], "type": "Polygon" }
Station
Collaborator
Variable measured 1
Variable name
Date
Variable description
Variable unit
YYYY-MM-DD
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=Date
Variable measured 2
Variable name
Time
Variable description
UTC-3. Time stamp refer to the end of the 30 min averaging period
Variable unit
HH:MM
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=Time
Variable measured 3
Variable name
CO2_MIXING_RATIO_umol_mol-1
Variable description
CO2-concentration (moles of gas per mole of dry air)
Variable unit
µmol mol-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=CO2_MIXING_RATIO_umol_mol-1
Variable measured 4
Variable name
FC_umol_m-2_s-1
Variable description
CO2 flux
Variable unit
µmol m-2 s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=FC_umol_m-2_s-1
Variable measured 5
Variable name
H2O_MIXING_RATIO_mmol_mol-1
Variable description
H2O-concentration (moles of gas per mole of dry air)
Variable unit
mmol mol-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=H2O_MIXING_RATIO_mmol_mol-1
Variable measured 6
Variable name
LE_W_m-2
Variable description
Latent heat flux
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=LE_W_m-2
Variable measured 7
Variable name
H_W_m-2
Variable description
Sensible heat flux
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=H_W_m-2
Variable measured 8
Variable name
FC_SSITC_TEST
Variable description
Quality flag for CO2 gas flux: 0, 1, 2 (Mauder and Foken, 2004)
Variable unit
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=FC_SSITC_TEST
Variable measured 9
Variable name
LE_SSITC_TEST
Variable description
Quality flag for latent heat flux: 0, 1, 2 (Mauder and Foken, 2004)
Variable unit
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=LE_SSITC_TEST
Variable measured 10
Variable name
H_SSITC_TEST
Variable description
Quality flag for sensible heat flux: 0, 1, 2 (Mauder and Foken, 2004)
Variable unit
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=H_SSITC_TEST
Variable measured 11
Variable name
USTAR_m_s-1
Variable description
Friction velocity
Variable unit
m s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=USTAR_m_s-1
Variable measured 12
Variable name
WS_m_s-1
Variable description
30-minutes average wind speed
Variable unit
m s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=WS_m_s-1
Variable measured 13
Variable name
WD_deg
Variable description
30-minutes average wind direction (true north)
Variable unit
Deg
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=WD_deg
Variable measured 14
Variable name
WS_MAX_m_s-1
Variable description
30-minutes maximum wind speed
Variable unit
m s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/0D1B-2F33#column=WS_MAX_m_s-1
Measurement Technique
    Date published
    Status
    Publisher 1
    Publisher name
    Greenland Ecosystem Monitoring
    Publisher URL
    https://data.g-e-m.dk