Daily 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 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.

Date Range:

November 22, 1993 to December 10, 2022

Data Citation

Doran, P.T., Fountain, A.G. 2023. Daily measurement summaries from Commonwealth Glacier Meteorological Station (COHM), McMurdo Dry Valleys, Antarctica (1993-2022, ongoing). Environmental Data Initiative. DOI: 10.6073/pasta/a5e6164abb618444c0c2248b3d588f77. Dataset accessed 25 April 2024.

Dataset(s)

Description:

COHM - Air Temperature (Daily)

Variables (click to expand):

METLOCID

Label:
Definition: Location code for Commonwealth meteorology station - COHM
Type: Nominal
Missing values: None specified

DATE_TIME

Label: Date_time
Definition: Date sample was collected
Type: Date/time
Date format: mm/dd/yyyy
Missing values:
- Required entry = None given

AVG_AIRT3M

Label:
Definition: Daily 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 daily 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 daily 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 daily 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: 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 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 value of the air temperature at 1 m
Type: Physical quantity
Unit: celsius
Maximum: Not specified
Minimum: Not specified
Precision: 0.01
Missing values:
- Null = None given

MAX_AIRT1M

Label:
Definition: Maximum 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-daily-20230705.csv (762.44 KB)

Description:

COHM - Ice Surface Change (Daily)

Variables (click to expand):

METLOCID

Label:
Definition: Location code for Commonwealth glacier meteorology station - COHM
Type: Nominal
Missing values: None specified

DATE_TIME

Label: Date_time
Definition: Date sample was collected
Type: Date/time
Date format: mm/dd/yyyy
Missing values:
- Required entry = None given

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-daily-20230705.csv (344.65 KB)

Description:

COHM - Solar Radiation (Daily)

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/dd/yyyy
Missing values: None specified

AVG_LWRADIN

Label:
Definition: Daily avgerage 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 daily 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 daily 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: Daily 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 daily 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: Daily 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 daily 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: Daily 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 daily 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: Daily 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 daily 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: Daily 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 daily 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

MAX_LWRADOUT2

Label:
Definition: Maximum of the daily outgoing longwave 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

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: Daily avgerage 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

MIN_LWRADOUT2

Label:
Definition: Minimum of the daily outgoing longwave 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

STD_SWRADIN

Label:
Definition: Standard deviation of the daily 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 daily 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-daily-20230705.csv (2.3 MB)

Description:

COHM - Relative Humidity (Daily)

Variables (click to expand):

METLOCID

Label:
Definition: Location code for Commonwealth glacier meteorology station - COHM
Type: Nominal
Missing values: None specified

DATE_TIME

Label: Date_time
Definition: Date sample was collected
Type: Date/time
Date format: mm/dd/yyyy
Missing values:
- Required entry = None given

AVG_RH

Label: Daily mean RH
Definition: Daily 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 daily 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 daily 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 daily 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-daily-20230705.csv (539.79 KB)

Description:

COHM - Ice Surface Temperature (Daily)

Variables (click to expand):

METLOCID

Label:
Definition: Location code for Commonwealth glacier meteorology station - COHM
Type: Nominal
Missing values: None specified

DATE_TIME

Label: Date_time
Definition: Date sample was collected
Type: Date/time
Date format: mm/dd/yyyy
Missing values:
- Required entry = None given

AVG_SURFTEMP

Label:
Definition: Daily 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 daily 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 daily 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 daily 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-daily-20230705.csv (368.2 KB)

Description:

COHM - Wind Speed (Daily)

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: DD/MM/YYYY
Missing values: None specified

AVG_WSPD

Label:
Definition: Average of the daily 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 daily 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 of one day
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 of one day
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: N_COMMENTS
Type: Nominal
Missing values: None specified

File:

mcmlter-clim-cohm_wspd-daily-20230705.csv (516.31 KB)

Description:

COHM - Ice Temperature (Daily)

Variables (click to expand):

METLOCID

Label:
Definition: Location code for Comonwealth 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: DD/MM/YYYY
Missing values: None specified

AVG_ICET50CM

Label:
Definition: Ice temperature daily 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 daily 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: Daily 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: Daily 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: daily 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: Daily 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: Daily 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

ICET_COMMENTS

Label:
Definition: Noted comments by the investigator about the particular measure of ICET_
Type: Nominal
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

File:

COHM_ICET_DAILY.csv (651.61 KB)

Short name:

COHM_DAILY

Dataset ID:

7107

People

Principal Investigator(s):

Peter T. Doran

Andrew G. Fountain

Contact:

McMurdo Dry Valleys LTER Information Manager

Associated Personnel:

Field Technician

Data Manager

Former Field Crew

Former Data Manager

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

http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf

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

Research Section:

LTER Core Areas:

disturbance

MCM Keywords:

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Short name:

Dataset ID:

Principal Investigator(s):

Contact:

Associated Personnel:

Related publications:

Related links:

Methods:

Additional information:

Research Section:

LTER Core Areas:

MCM Keywords:

Keywords: