Monthly measurement summaries from Commonwealth Glacier Meteorological Station (COHM), McMurdo Dry Valleys, Antarctica (1993-2022, ongoing)

Summary

Abstract: 

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 monthly measurement summaries derived from 15-minute data generated by the Commonwealth Glacier Meteorological Station (COHM), located in Taylor Valley. COHM was established in 1993, during the 93/94 field season.

Date Range: 

November 1, 1993 to December 31, 2022
Data Citation
Doran, P.T., Fountain, A.G. 2023. Monthly measurement summaries from Commonwealth Glacier Meteorological Station (COHM), McMurdo Dry Valleys, Antarctica (1993-2022, ongoing). Environmental Data Initiative. DOI: 10.6073/pasta/92dc395e8b12dc72c875f875f5658fd5. Dataset accessed 12 December 2024.
Dataset(s)

Description: 

COHM - Air Temperature (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for this met station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date_time
  • Definition: Date sample was collected
  • Type: Date/time
  • Date format: mm/yyyy
  • Missing values: None specified
AVG_AIRT3M
  • Label:
  • Definition: Monthly average air temperature at 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_AIRT3M
  • Label:
  • Definition: Standard deviation for the air temperature at 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_AIRT3M
  • Label:
  • Definition: Minimum value of the air temperature at 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_AIRT3M
  • Label:
  • Definition: Maximum value for the air temperature at 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_AIRT3M
  • Label:
  • Definition: Number of observations for this average
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_AIRT1M
  • Label:
  • Definition: Monthly average air temperature at 1 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
STD_AIRT1M
  • Label:
  • Definition: Standard deviation for the monthly air temperature at 1m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MIN_AIRT1M
  • Label:
  • Definition: Minimum monthly value of the air temperature at 1m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_AIRT1M
  • Label:
  • Definition: Maximum monthly value for the air temperature at 1m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_AIRT1M
  • Label:
  • Definition: Number of observations for this average
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_airt-monthly-20230705.csv (26.18 KB)

Description: 

COHM - Ice Surface Change (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for this met station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date_time
  • Definition: Date sample was collected
  • Type: Date/time
  • Date format: mm/yyyy
  • Missing values: None specified
AVG_ICESURFCHANGE_CM
  • Label:
  • Definition: Average Ice surface change
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_ICESURFCHANGE_CM
  • Label:
  • Definition: Standard deviation for the Ice surface change
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_ICESURFCHANGE_CM
  • Label:
  • Definition: Minimum value of the Ice surface change
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_ICESURFCHANGE_CM
  • Label:
  • Definition: Maximum daily value for the Ice surface temperature thermal infrared
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_ICESURFCHANGE_CM
  • Label:
  • Definition: Number of observations for this average
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_icesurfchange-monthly-20230705.csv (12.21 KB)

Description: 

COHM - Solar Radiation (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for this met station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date_time
  • Definition: Date sample was collected
  • Type: Date/time
  • Date format: mm/yyyy
  • Missing values: None specified
AVG_LWRADIN
  • Label:
  • Definition: Average of the Incoming longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values: None specified
STD_LWRADIN
  • Label:
  • Definition: Standard deviation of the Incoming longwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_LWRADIN
  • Label:
  • Definition: Daily minimum for the incoming longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MAX_LWRADIN
  • Label:
  • Definition: Maximum incoming longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
N_LWRADIN
  • Label:
  • Definition: Number of data records included for the statistics
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_LWRADIN2
  • Label:
  • Definition: Average of the Incoming longwave radiation based on applying instrument-specific multiplier, a replicate.
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values: None specified
STD_LWRADIN2
  • Label:
  • Definition: Standard deviation of the Incoming longwave radiation distribution based on applying instrument-specific multiplier. A replicate
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_LWRADIN2
  • Label:
  • Definition: minimum for the incoming longwave radiation based on applying instrument-specific multiplier - a replicate
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MAX_LWRADIN2
  • Label:
  • Definition: Maximum incoming longwave radiation based on applying instrument-specific multiplier - a replicate
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
N_LWRADIN2
  • Label:
  • Definition: Number of data records used to compute the statistics
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_LWRADOUT
  • Label:
  • Definition: Average of the outbound (reflected) longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values: None specified
STD_LWRADOUT
  • Label:
  • Definition: Standard deviation of the outgoing longwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_LWRADOUT
  • Label:
  • Definition: minimum for the outgoing longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MAX_LWRADOUT
  • Label:
  • Definition: Maximum outgoing longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
N_LWRADOUT
  • Label:
  • Definition: Number of data records included for the statistics
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_LWRADOUT2
  • Label:
  • Definition: Average of the outgoing longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values: None specified
STD_LWRADOUT2
  • Label:
  • Definition: Standard deviation of the outgoing longwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_LWRADOUT2
  • Label:
  • Definition: Minimum of the monthly outgoing longwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_LWRADOUT2
  • Label:
  • Definition: Maximum of the monthly outgoing longwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_LWRADOUT2
  • Label: Number of Observations
  • Definition: Number of observations for the daily stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_SWRADIN
  • Label:
  • Definition: Average of the Incoming shortwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values: None specified
STD_SWRADIN
  • Label:
  • Definition: Standard deviation of the Incoming shortwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 400
  • Minimum: -5
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_SWRADIN
  • Label:
  • Definition: Minimum of the Incoming shortwave radiation distribution based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m^2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_SWRADIN
  • Label:
  • Definition: Maximum incoming shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
N_SWRADIN
  • Label: Number of Observations
  • Definition: Number of observations for the derived data statistics.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_SWRADOUT
  • Label:
  • Definition: Average of the outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
STD_SWRADOUT
  • Label:
  • Definition: Standard deviation for the outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
MIN_SWRADOUT
  • Label:
  • Definition: Minimum outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
MAX_SWRADOUT
  • Label:
  • Definition: Maximum outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
N_SWRADOUT
  • Label: Number of Observations
  • Definition: Number of observations for the stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_THMIR
  • Label:
  • Definition: Average of the thermal infrared surface temperature
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_THMIR
  • Label:
  • Definition: Standard deviation for the thermal infrared surface temperature distribution
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_THMIR
  • Label:
  • Definition: Minimum of the thermal infrared surface temperature
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_THMIR
  • Label:
  • Definition: Maximum of the thermal infrared surface temperature
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_THMIR
  • Label: Number of Observations
  • Definition: Number of observations for the daily stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_radn-monthly-20230705.csv (84.94 KB)

Description: 

COHM - Relative Humidity (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for this met station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date_time
  • Definition: Date sample was collected
  • Type: Date/time
  • Date format: MM/YYYY
  • Missing values: None specified
AVG_RH
  • Label: mean RH
  • Definition: average of the relative humidity values
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
STD_RH
  • Label: Standard Dev. of daily RH
  • Definition: The standard deviation for the distribution of rel. humidity values
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MIN_RH
  • Label: Minimum RH
  • Definition: The minimum of the relative humidity
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_RH
  • Label: Maximum RH
  • Definition: The maximum of the relative humidity
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_RH
  • Label: Number of Observations
  • Definition: Number of observations for the daily stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_rh-monthly-20230705.csv (18.92 KB)

Description: 

COHM - Ice Surface Temperature (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for this met station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date_time
  • Definition: Date sample was collected
  • Type: Date/time
  • Date format: mm/yyyy
  • Missing values: None specified
AVG_SURFTEMP
  • Label:
  • Definition: Average Ice surface temperature thermal infrared
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_SURFTEMP
  • Label:
  • Definition: Standard deviation for the Ice surface temperature thermal infrared
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_SURFTEMP
  • Label:
  • Definition: Minimum value of the Ice surface temperature thermal infrared
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_SURFTEMP
  • Label:
  • Definition: Maximum value for the Ice surface temperature thermal infrared
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_SURFTEMP
  • Label:
  • Definition: Number of observations for this average
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_surftemp-monthly-20230705.csv (12.93 KB)

Description: 

COHM - Wind Speed (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: METLOCID identification code for the meteorological station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date when measurement was taken
  • Type: Date/time
  • Date format: MM/YYYY
  • Missing values: None specified
AVG_WSPD
  • Label:
  • Definition: Average of the values of the wind speed
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
STDDEV_WSPD
  • Label:
  • Definition: Standard deviation of the distribution of the wind speed
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MIN_WSPD
  • Label:
  • Definition: Minimum value of the wind speed for the period
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MAX_WSPD
  • Label:
  • Definition: Maximum value of the wind speed for the period
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_WSPD
  • Label:
  • Definition: Number of data points used to calculate these statistics.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments about the measurement in this period
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

mcmlter-clim-cohm_wspd-monthly-20230705.csv (17.93 KB)

Description: 

COHM - Ice Temperature (Monthly)

Variables (click to expand): 

METLOCID
  • Label:
  • Definition: Location code for Canada Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/YYYY
  • Missing values: None specified
AVG_ICET50CM
  • Label:
  • Definition: Ice temperature average at 50 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • Null = None given
STD_ICET50CM
  • Label:
  • Definition: Ice temperature standard deviation of the distribution at 50 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_ICET50CM
  • Label:
  • Definition: Minimum of Ice temperature at 50 centimeters depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_ICET50CM
  • Label:
  • Definition: Maximum of Ice temperature at 50 centimeters depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_ICET50CM
  • Label:
  • Definition: Ice temperature at 50 cm depth
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
AVG_ICET1M
  • Label:
  • Definition: Average for the Ice temperature at 1 meter depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_ICET1M
  • Label:
  • Definition: standard deviation of distribution of the Ice temperature at 1 meter depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MIN_ICET1M
  • Label:
  • Definition: minimum of the Ice temperature at 1 meter depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_ICET1M
  • Label:
  • Definition: Maximum of the ice temperature at 1 meter depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_ICET1M
  • Label: Number of Observations
  • Definition: Number of observations for the daily stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
AVG_ICET20CM
  • Label:
  • Definition: Ice temperature daily average at 20cm
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_ICET20CM
  • Label:
  • Definition: Standard deviation of the Ice temperature distribution at 20 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MIN_ICET20CM
  • Label:
  • Definition: Minimum daily of the ice temperature at 20 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_ICET20CM
  • Label:
  • Definition: Maximum ice temperature at 20cm
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_ICET20CM
  • Label:
  • Definition: number of data points used in the stats. for ce temperature at 20cm
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
AVG_ICEELEVATION
  • Label:
  • Definition: Average elevation of ice surface measured from fixed datum (based on original height of sonic)
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
STD_ICEELEVATION
  • Label:
  • Definition: standard deviation of the ice elevation
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MIN_ICEELEVATION
  • Label:
  • Definition: Minimum elevation of ice surface measured from fixed datum (based on original height of sonic)
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
MAX_ICEELEVATION
  • Label:
  • Definition: Maximum elevation of ice surface measured from fixed datum (based on original height of sonic)
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
N_ICEELEVATION
  • Label: Number of Observations
  • Definition: Number of observations for the daily stats.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_COMMENTS
  • Label:
  • Definition: Number of comments by the investigator about the particular measure of ICET_
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

File: 

COHM_ICET_MONTHLY.csv (24.5 KB)

Short name: 

COHM_MONTHLY

Dataset ID: 

7207
People

Principal Investigator(s): 

Peter T. Doran
Andrew G. Fountain

Contact: 

McMurdo Dry Valleys LTER Information Manager

Associated Personnel: 

Field Technician
Krista F. Myers
Data Manager
Renée F. Brown
Former Field Crew
Maciej K. Obryk
Former Field Crew
Hassan Basagic
Former Field Crew
Thomas Nylen
Former Data Manager
Inigo San Gil
Related

Related publications: 

McMurdo Dry Valleys Long-Term Ecological Research (LTER): LTER automatic weather network (LAWN)

Related links: 

Meteorological Task Lists
Methodology

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: 
 
 
  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
    
 

Additional information: 

Meteorological data are collected year-round at each of MCM LTER stations. Data are manually downloaded from the meteorological stations during the austral summer. Raw 15 minute data (Level 0) is processed and provided as Level 1 data on the MCM LTER website. Field notes, sensor information, processing procedures, QA/QC, and metadata is provided in the Meteorological Post Processing Documentation and Task Lists for each field season at the following address: https://mcm.lternet.edu/meteorological-task-lists

Categories

Research Section: 

LTER Core Areas: 

MCM Keywords: 

Keywords: 

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