Peter T. DoranAndrew G. Fountain
2015-11-23
Daily measurement summaries from Commonwealth Glacier Meteorological Station (COHM) in Taylor Valley, Antarctica from 1993 to present
tabular digitial data
McMurdo Dry Valleys LTER
10.6073/pasta/3babf86cfa3c456d0fa09355a272af21
http://gar.lternet.edu/content/daily-measurement-summaries-commonwealth-glacier-meteorological-station-cohm-taylor-valley
As part of the McMurdo Dry Valleys Long Term Ecological Research program, meteorological data are collected from various locations throughout the McMurdo Dry Valleys of Antarctica. This package contains daily measurement summaries derived from 15-minute data generated by the Commonwealth Glacier Meteorological Station (COHM), located in Taylor Valley (Latitude: -77.5646, Longitude: 163.2823, Elevation: 290 meters above sea level). COHM was established in 1993, during the 93/94 field season.
Meteorological data is collected year-round at each of the stations in the McMurdo Dry Valleys of Antarctica. After retrieving this data (usually every January), the parameters that are recorded are processed from level 0 (raw) to level 1 (processed, provided on the web). The raw data file descriptions and task lists summarize what was done to get from level 0 to level 1 for all station found at the following address: http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm
1993-11-22
2018-11-27
ground condition
As needed
Meteorology station located at same coordinates as stake 11 on the Commonwealth Glacier mass balance gridID: COHM
163.282318115234
163.282318115234
-77.564598083496
-77.564598083496
290m
290m
meter
[term:vocabulary]
None
<cntperp> <cntper>McMurdo Dry Valleys LTER Information Manager</cntper> </cntperp> <cntemail>im@mcmlter.org</cntemail>
Name: Krista F. Myers Role: field technician Name: RenÃ©e F. Brown Role: data manager Name: Maciej K. Obryk Role: former field crew Name: Hassan Basagic Role: former field crew Name: Thomas Nylen Role: former field crew Name: Inigo San Gil Role: former data manager
Not Applicable
Not Applicable
Field and/or Lab Methods
At the start of the 1993-1994 field season, the Commonwealth Glacier meteorological station was constructed at the same coordinates as stake 11 on the glacier's mass balance grid. The station was set up to sample sensors every 30 seconds and send summary statistics (for example, averages and maximums) to solid-state storage modules every:Â Â Â Â 3 hours between November 22 and December 3, 1993,Â Â 30 minutes between December 3 and December 24, 1993,Â Â 30 minutes for the main array andamp; every 24 hours for the max/min thermal infrared between December 24, 1993 and; January 12, 1994,Â Â 6 hours for the main array andamp; every 24 hours for the max/min thermal infrared between January 12, 1994 and; January 18, 1994,Â Â 20 minutes between January 18, 1994 and November 27, 1995,Â Â 15 minutes thereafter.Â Â Â Â Â This has resulted in approximately 20 values being recorded for final storage in every output interval.Â Â Sampling and Averaging Intervals Â Â Â Â For Sampling frequency and Data Logger output and averaging intervals please visit Â Â Â Â Â Â http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf Â Â Seasonal Task Summary Â Â Â Â To view the data post-processing steps for each season please visit: Â Â Â Â Â Â http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm
At the start of the 1993-1994 field season, the Commonwealth Glacier meteorological station was constructed at the same coordinates as stake 11 on the glacier's mass balance grid. The station was set up to sample sensors every 30 seconds and send summary statistics (for example, averages and maximums) to solid-state storage modules every: 3 hours between November 22 and December 3, 1993, 30 minutes between December 3 and December 24, 1993, 30 minutes for the main array andamp; every 24 hours for the max/min thermal infrared between December 24, 1993 and; January 12, 1994, 6 hours for the main array andamp; every 24 hours for the max/min thermal infrared between January 12, 1994 and; January 18, 1994, 20 minutes between January 18, 1994 and November 27, 1995, 15 minutes thereafter. This has resulted in approximately 20 values being recorded for final storage in every output interval. Sampling and Averaging Intervals For Sampling frequency and Data Logger output and averaging intervals please visit http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf Seasonal Task Summary To view the data post-processing steps for each season please visit: http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm
unknown
COHM_AIRT_DAILY
COHM - Air Temperature (Daily)
METLOCID
Location code for Commonwealth meteorology station - COHM
The data provider
Location code for Commonwealth meteorology station - COHM
Date_time
Date sample was collected
The data provider
calendar date/time
mm/dd/yyyy
gregorian calendar
AVG_AIRT3M
Daily average air temperature at 3 m above ground
The data provider
celsius
0.01
STD_AIRT3M
Standard deviation for the daily air temperature at 3 m above ground
The data provider
celsius
0.01
MIN_AIRT3M
Minimum daily value of the air temperature at 3 m above ground
The data provider
celsius
0.01
MAX_AIRT3M
Maximum daily value for the air temperature at 3 m above ground
The data provider
celsius
0.01
N_AIRT3M
Number of observations for this average
The data provider
dimensionless
AVG_AIRT1M
Average air temperature at 1 m above ground
The data provider
celsius
STD_AIRT1M
Standard deviation for the air temperature at 1m above ground
The data provider
celsius
MIN_AIRT1M
Minimum value of the air temperature at 1 m
The data provider
celsius
0.01
MAX_AIRT1M
Maximum value for the air temperature at 1m above ground
The data provider
celsius
N_AIRT1M
Number of observations for this average
The data provider
dimensionless
N_COMMENTS
Number of comments about the measurement in this period
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_AIRT.csv
None
COHM_ICESURFCHANGE_DAILY
COHM - Ice Surface Change (Daily)
METLOCID
Location code for Commonwealth glacier meteorology station - COHM
The data provider
Location code for Commonwealth glacier meteorology station - COHM
Date_time
Date sample was collected
The data provider
calendar date/time
mm/dd/yyyy
gregorian calendar
AVG_ICESURFCHANGE_CM
Average Ice surface change
The data provider
centimeter
0.01
STD_ICESURFCHANGE_CM
Standard deviation for the Ice surface change
The data provider
centimeter
0.01
MIN_ICESURFCHANGE_CM
Minimum value of the Ice surface change
The data provider
centimeter
0.01
MAX_ICESURFCHANGE_CM
Maximum daily value for the Ice surface temperature thermal infrared
The data provider
centimeter
0.01
N_ICESURFCHANGE_CM
Number of observations for this average
The data provider
dimensionless
N_COMMENTS
Number of comments about the measurement in this period
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_ICESURFCHANGE.csv
None
COHM_ICET_DAILY
COHM - Ice Temperature (Daily)
METLOCID
Location code for Comonwealth Glacier meteorology station
The data provider
Location code for Comonwealth Glacier meteorology station
DATE_TIME
Date/time of sample (New Zealand DST, +13 UTC)
The data provider
calendar date/time
DD/MM/YYYY
gregorian calendar
AVG_ICET50CM
Ice temperature daily average at 50 cm depth
The data provider
celsius
STD_ICET50CM
Ice temperature standard deviation of daily distribution at 50 cm depth
The data provider
celsius
0.01
MIN_ICET50CM
Daily minimum of Ice temperature at 50 centimeters depth
The data provider
celsius
0.01
MAX_ICET50CM
Daily maximum of Ice temperature at 50 centimeters depth
The data provider
celsius
0.01
N_ICET50CM
Ice temperature at 50 cm depth
The data provider
dimensionless
0.01
AVG_ICET1M
daily average for the Ice temperature at 1 meter depth
The data provider
celsius
0.01
STD_ICET1M
standard deviation of distribution of the Ice temperature at 1 meter depth
The data provider
celsius
MIN_ICET1M
Daily minimum of the Ice temperature at 1 meter depth
The data provider
celsius
0.01
MAX_ICET1M
Daily maximum of the ice temperature at 1 meter depth
The data provider
celsius
0.01
Number of Observations
Number of observations for the daily stats.
The data provider
dimensionless
AVG_ICET20CM
Ice temperature daily average at 20cm
The data provider
celsius
0.01
STD_ICET20CM
Standard deviation of the Ice temperature distribution at 20 cm depth
The data provider
celsius
0.01
MIN_ICET20CM
Minimum daily of the ice temperature at 20 cm depth
The data provider
celsius
0.01
MAX_ICET20CM
Maximum ice temperature at 20cm
The data provider
celsius
0.01
N_ICET20CM
number of data points used in the stats. for ce temperature at 20cm
The data provider
dimensionless
0.01
AVG_ICEELEVATION
Average elevation of ice surface measured from fixed datum (based on original height of sonic)
The data provider
centimeter
0.01
STD_ICEELEVATION
standard deviation of the ice elevation
The data provider
centimeter
ICET_COMMENTS
Noted comments by the investigator about the particular measure of ICET_
The data provider
Noted comments by the investigator about the particular measure of ICET_
MIN_ICEELEVATION
Minimum elevation of ice surface measured from fixed datum (based on original height of sonic)
The data provider
centimeter
0.01
MAX_ICEELEVATION
Maximum elevation of ice surface measured from fixed datum (based on original height of sonic)
The data provider
centimeter
0.01
Number of Observations
Number of observations for the daily stats.
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
44
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_ICET_DAILY.csv
None
COHM_RADN_DAILY
COHM - Solar Radiation (Daily)
METLOCID
Location code for this met station
The data provider
Location code for this met station
Date_time
Date sample was collected
The data provider
calendar date/time
mm/dd/yyyy
gregorian calendar
AVG_LWRADIN
Daily avgerage of the Incoming longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
STD_LWRADIN
Standard deviation of the daily Incoming longwave radiation distribution based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MIN_LWRADIN
Daily minimum for the incoming longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MAX_LWRADIN
Maximum daily incoming longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
N_LWRADIN
Number of data records included for the statistics
The data provider
dimensionless
AVG_LWRADIN2
Daily average of the Incoming longwave radiation based on applying instrument-specific multiplier, a replicate.
The data provider
-5
400
W/m2
0.1
STD_LWRADIN2
Standard deviation of the daily Incoming longwave radiation distribution based on applying instrument-specific multiplier. A replicate
The data provider
-5
400
W/m2
0.1
MIN_LWRADIN2
Daily minimum for the incoming longwave radiation based on applying instrument-specific multiplier - a replicate
The data provider
-5
400
W/m2
0.1
MAX_LWRADIN2
Maximum daily incoming longwave radiation based on applying instrument-specific multiplier - a replicate
The data provider
-5
400
W/m2
0.1
N_LWRADIN2
Number of data records used to compute the statistics
The data provider
dimensionless
AVG_LWRADOUT
Daily average of the outbound (reflected) longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
STD_LWRADOUT
Standard deviation of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MIN_LWRADOUT
Daily minimum for the outgoing longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MAX_LWRADOUT
Maximum daily outgoing longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
N_LWRADOUT
Number of data records included for the statistics
The data provider
dimensionless
AVG_LWRADOUT2
Daily average of the outgoing longwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
STD_LWRADOUT2
Standard deviation of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MAX_LWRADOUT2
Maximum of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier
The data provider
W/m^2
Number of Observations
Number of observations for the daily stats.
The data provider
dimensionless
AVG_SWRADIN
Daily avgerage of the Incoming shortwave radiation based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MIN_LWRADOUT2
Minimum of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier
The data provider
W/m^2
STD_SWRADIN
Standard deviation of the daily Incoming shortwave radiation distribution based on applying instrument-specific multiplier
The data provider
-5
400
W/m2
0.1
MIN_SWRADIN
Minimum of the daily Incoming shortwave radiation distribution based on applying instrument-specific multiplier
The data provider
W/m^2
MAX_SWRADIN
Maximum incoming shortwave radiation/solar flux
The data provider
W/m2
0.1
Number of Observations
Number of observations for the derived data statistics.
The data provider
dimensionless
AVG_SWRADOUT
Average of the outgoing shortwave radiation/solar flux
The data provider
W/m2
0.1
STD_SWRADOUT
Standard deviation for the outgoing shortwave radiation/solar flux
The data provider
W/m2
0.1
MIN_SWRADOUT
Minimum outgoing shortwave radiation/solar flux
The data provider
W/m2
0.1
MAX_SWRADOUT
Maximum outgoing shortwave radiation/solar flux
The data provider
W/m2
0.1
Number of Observations
Number of observations for the stats.
The data provider
dimensionless
AVG_THMIR
Average of the thermal infrared surface temperature
The data provider
celsius
0.01
STD_THMIR
Standard deviation for the thermal infrared surface temperature distribution
The data provider
celsius
0.01
MIN_THMIR
Minimum of the thermal infrared surface temperature
The data provider
celsius
0.01
MAX_THMIR
Maximum of the thermal infrared surface temperature
The data provider
celsius
0.01
Number of Observations
Number of observations for the daily stats.
The data provider
dimensionless
N_COMMENTS
Number of comments about the measurement in this period
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_RADN.csv
None
COHM_RH_DAILY
COHM - Relative Humidity (Daily)
METLOCID
Location code for Commonwealth glacier meteorology station - COHM
The data provider
Location code for Commonwealth glacier meteorology station - COHM
Date_time
Date sample was collected
The data provider
calendar date/time
mm/dd/yyyy
gregorian calendar
Daily mean RH
Daily average of the relative humidity values
The data provider
dimensionless
Standard Dev. of daily RH
The standard deviation for the distribution of daily rel. humidity values
The data provider
dimensionless
Minimum RH
The daily minimum of the relative humidity
The data provider
dimensionless
Maximum RH
The daily maximum of the relative humidity
The data provider
dimensionless
Number of Observations
Number of observations for the daily stats.
The data provider
dimensionless
N_COMMENTS
Number of comments about the measurement in this period
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_RH.csv
None
COHM_SURFTEMP_DAILY
COHM - Ice Surface Temperature (Daily)
METLOCID
Location code for Commonwealth glacier meteorology station - COHM
The data provider
Location code for Commonwealth glacier meteorology station - COHM
Date_time
Date sample was collected
The data provider
calendar date/time
mm/dd/yyyy
gregorian calendar
AVG_SURFTEMP
Daily average Ice surface temperature thermal infrared
The data provider
celsius
0.01
STD_SURFTEMP
Standard deviation for the daily Ice surface temperature thermal infrared
The data provider
celsius
0.01
MIN_SURFTEMP
Minimum daily value of the Ice surface temperature thermal infrared
The data provider
celsius
0.01
MAX_SURFTEMP
Maximum daily value for the Ice surface temperature thermal infrared
The data provider
celsius
0.01
N_SURFTEMP
Number of observations for this average
The data provider
dimensionless
N_COMMENTS
Number of comments about the measurement in this period
The data provider
dimensionless
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_SURFTEMP.csv
None
COHM_WSPD_DAILY
COHM - Wind Speed (Daily)
METLOCID
METLOCID identification code for the meteorological station
The data provider
METLOCID identification code for the meteorological station
DATE_TIME
Date when measurement was taken
The data provider
calendar date/time
DD/MM/YYYY
gregorian calendar
AVG_WSPD
Average of the daily values of the wind speed
The data provider
metersPerSecond
STDDEV_WSPD
Standard deviation of the daily distribution of the wind speed
The data provider
metersPerSecond
MIN_WSPD
Minimum value of the wind speed for the period of one day
The data provider
metersPerSecond
MAX_WSPD
Maximum value of the wind speed for the period of one day
The data provider
metersPerSecond
N_WSPD
Number of data points used to calculate these statistics.
The data provider
dimensionless
N_COMMENTS
N_COMMENTS
The data provider
N_COMMENTS
McMurdo Dry Valleys LTER
The data distributor shall not be liable for innacuracies in the content
http
1
0
\n
1
column
,
http://gar.lternet.edu/sites/default/files/data/COHM_DAILY_WSPD.csv
None
2015-11-23
2015-11-23
McMurdo Dry Valleys LTER
http://mcmlter.org/
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