M2

M2 is one of six meteorological stations in the Zackenberg and Store Sødal Valley. Data from the station is found under meteorology (wind, temperature and relative humidity, short wave and long wave radiation, as well as NDVI), soil properties (soil moisture and soil heat flux) and snow properties (snow depth). M2 is located on a south facing slope in side the ZEROCALM-2 grid, in which active layer is monitored. The vegetation underneath the mast is dominated by salix arctica. Measurements at this station were initiated on the 5th of August 2003. The meteological data at M2 is recorded every half hour. Between 2003-2012 data was recorded using a CR10x campbell scientific data logger. In August 2012 this was changed to a CR1000 data logger. As the station is situated on a southfacing slope (dominating leeward side during winter in Zackenberg), the station has been covered in snow during several winters. E.g. during the winter 2014-15, whereafter the mast was tilted slightly towards the south. The tilt was corrected for on the 5th of August 2015 and we estimate that the tilt resulted in incoming shortwave radiation measurements of ~5 % more compared to earlier years. Unfortunately the tilt cannot be corrected for, as the correct inclination is unknown. Blank cells are missing values due to snow burial, power problems, broken sensors, data logger change, etc. Major data fall outs are: 2004: 2004.01.27 - 2004-02-08 and then every day until 2004.02.18 due to low battery voltage. 2005: 2005-01-06 - 2005.05.20 (except for two recordings in february), because the mast was out of level due to the weight of snow. 2006: 2006.02.11 - 2006.02.21 due to low battery voltage. 2008: 2008.02.10 - 2008.02.13 due to burial in snow and again from 2008.02.24 - 2008-05-13. During this burial the mast was compltely broken and all sensors that require the mast to be in level in order to give accurate measurements are missing until a new mast was installed 2008.08.13. Windsensors were also damaged during this burial, replaced in 2009. 2009: 2009.02.08 - 2009.03.24 daily dropouts due to low battery voltage. 2010: 2010-01-28 - 2010.05.29 due to dead internal battery. 2011: Several holes in October, due to batteryproblems, station dies 2011.11.17 due to low battery voltage, starts again 2012.04.14. 2012: 2011.11.17 - 2012.04.14 the station was also completely buried in snow and wind cup anemomter broken. Data from 2012.04.19 - 2012.05.02 is missing due to battery problems. And 2012.08.18 - 2012.08.25 due to data logger change. 2013: 2013.04.27 - 2013.04.30 due to problems with memorycard. 2017: Wind vanes A100R (measuring wind speed and gust) and W200P (wind direction and standard deviation) were exchanged with Young Alpine wind monitor (05103-45 Wind monitor), as well as temperature and relative humidity, April 29th. 2018: 2018-02 - 2018-06: due to snow burial.

Data and Resources

This dataset has no data

Additional Info

Field Value
Source https://data.g-e-m.dk/datasets/10.17897/7WAM-6143
Version 1
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Temporal coverage 1
Temporal coverage start
2003-08-05
Temporal coverage end
2024-09-16
Spatial coverage { "coordinates": [ [ [ -20.563194274902344, 74.46549224853516 ], [ -20.563194274902344, 74.46549224853516 ], [ -20.563194274902344, 74.46549224853516 ], [ -20.563194274902344, 74.46549224853516 ] ] ], "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/10.17897/7WAM-6143#column=Date
Variable measured 2
Variable name
Time
Variable description
-
Variable unit
HH:MM
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Time
Variable measured 3
Variable name
Wind gust m/s
Variable description
Maximum wind speed measured within the 30 min measurement period, measured approximately 250 cm above the ground surface
Variable unit
m s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Wind+gust+m%2Fs
Variable measured 4
Variable name
Wind speed m/s
Variable description
Average wind speed over 30 min, measured approximately 250 cm above the ground surface
Variable unit
m s-1
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Wind+speed+m%2Fs
Variable measured 5
Variable name
Wind direction degrees
Variable description
Wind direction measured in relation to geographic north, , measured approximately 250 cm above the ground surface
Variable unit
°
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Wind+direction+degrees
Variable measured 6
Variable name
Wind direction STDEV
Variable description
Standard deviation of the wind direction measurements, over 30 min, , measured approximately 250 cm above the ground surface
Variable unit
-
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Wind+direction+STDEV
Variable measured 7
Variable name
Relative Humidity %
Variable description
Relative humidity measured in %, maximum values measured were 102 %. All values above 100 % have been set to 100 %
Variable unit
%
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Relative+Humidity+%25
Variable measured 8
Variable name
Air temperature °C
Variable description
Air temperature measured in degrees celcius
Variable unit
°C
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Air+temperature+%C2%B0C
Variable measured 9
Variable name
Incoming shortwave radiation W/m^2
Variable description
Incoming shortwave radiation measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Incoming+shortwave+radiation+W%2Fm%5E2
Variable measured 10
Variable name
Outgoing shortwave radiation W/m^2
Variable description
Outgoing shortwave radiation measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Outgoing+shortwave+radiation+W%2Fm%5E2
Variable measured 11
Variable name
Net shortwave radiation W/m^2
Variable description
Net shortwave radiation measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Net+shortwave+radiation+W%2Fm%5E2
Variable measured 12
Variable name
Net longwave radiation W/m^2
Variable description
Net longwave radiation measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Net+longwave+radiation+W%2Fm%5E2
Variable measured 13
Variable name
Albedo %
Variable description
Albedo measured in %
Variable unit
%
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Albedo+%25
Variable measured 14
Variable name
Net Radiation W/m^2
Variable description
Net radiation measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Net+Radiation+W%2Fm%5E2
Variable measured 15
Variable name
Incoming longwave radiation corrected W/m^2
Variable description
Temperature corrected incoming longwave radiation, measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Incoming+longwave+radiation+corrected+W%2Fm%5E2
Variable measured 16
Variable name
Outgoing longwave radiation corrected W/m^2
Variable description
Temperature corrected Outgoing longwave radiation, measured in watts per square meter
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Outgoing+longwave+radiation+corrected+W%2Fm%5E2
Variable measured 17
Variable name
Temp sky °K
Variable description
Sky temperature measured in Kelvin
Variable unit
W m-2
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Temp+sky+%C2%B0K
Variable measured 18
Variable name
Temp ground °K
Variable description
Ground temperature measured in Kelvin
Variable unit
K
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=Temp+ground+%C2%B0K
Variable measured 19
Variable name
NDVI
Variable description
Normalised difference vegetation index, computed from (RVI2-1)/(RVI2+1), unitless
Variable unit
-
Variable URL
https://data.g-e-m.dk/datasets/10.17897/7WAM-6143#column=NDVI
Measurement Technique
    Date published
    Status
    Publisher 1
    Publisher name
    Greenland Ecosystem Monitoring
    Publisher URL
    https://data.g-e-m.dk