uid=MCM,o=EDI,dc=edirepository,dc=org all public read COHM_DAILY Daily measurement summaries from Commonwealth Glacier Meteorological Station (COHM), McMurdo Dry Valleys, Antarctica (1993-2022, ongoing) Peter Doran pdoran@lsu.edu https://www.lsu.edu/science/geology/people/faculty/doran.php https://orcid.org/0000-0002-3774-2847 Andrew Fountain
P.O. Box 751 Portland OR 97207 US
(503) 725-3386 andrew@pdx.edu http://glaciers.pdx.edu/fountain/ https://orcid.org/0000-0001-5299-2273
McMurdo Dry Valleys LTER http://mcmlter.org/ Krista Myers field technician Renée Brown rfbrown@unm.edu https://orcid.org/0000-0002-4986-7663 data manager Maciej Obryk
Cascades Volcano Observatory Vancouver WA 98683 US
maciej.obryk@gmail.com https://orcid.org/0000-0002-8182-8656 former field crew
Hassan Basagic basagic@gmail.com former field crew Thomas Nylen thomasnylen@gmail.com https://orcid.org/0000-0001-9579-8702 former field crew Inigo San Gil
Department of Biology, MSC03 2020 University of New Mexico Albuquerque NM 87131 US
(505) 277-2625 (505) 277-2541 isangil@lternet.edu former data manager
2023-07-07 English
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.
air temperature climatology ice meteorology wind wind direction wind speed LTER Controlled Vocabulary Antarctica atmospheric pressure humidity ice temperature McMurdo Dry Valleys radiation relative humidity RH snow height Station Keywords disturbance LTER Core Areas 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
Data Policies This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-1637708). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.
https://mcm.lternet.edu/content/daily-measurement-summaries-commonwealth-glacier-meteorological-station-cohm-mcmurdo-dry Meteorology station located at same coordinates as stake 11 on the Commonwealth Glacier mass balance gridID: COHM 163.282300000000 163.282300000000 -77.564600000000 -77.564600000000 282 282 meter 1993-11-22 2022-12-10 McMurdo Dry Valleys LTER Information Manager im@mcmlter.org McMurdo Dry Valleys LTER
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  
COHM_AIRT_DAILY COHM - Air Temperature (Daily) mcmlter-clim-cohm_airt-daily-20230705.csv 780736 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_airt-daily-20230705.csv METLOCID METLOCID Location code for Commonwealth meteorology station - COHM string Location code for Commonwealth meteorology station - COHM DATE_TIME Date_time Date sample was collected date mm/dd/yyyy Required entry None given AVG_AIRT3M AVG_AIRT3M Daily average air temperature at 3 m above ground celsius 0.01 real Null None given STD_AIRT3M STD_AIRT3M Standard deviation for the daily air temperature at 3 m above ground celsius 0.01 real Null None given MIN_AIRT3M MIN_AIRT3M Minimum daily value of the air temperature at 3 m above ground celsius 0.01 real Null None given MAX_AIRT3M MAX_AIRT3M Maximum daily value for the air temperature at 3 m above ground celsius 0.01 real Null None given N_AIRT3M N_AIRT3M Number of observations for this average dimensionless real AVG_AIRT1M AVG_AIRT1M Average air temperature at 1 m above ground celsius real STD_AIRT1M STD_AIRT1M Standard deviation for the air temperature at 1m above ground celsius real MIN_AIRT1M MIN_AIRT1M Minimum value of the air temperature at 1 m celsius 0.01 real Null None given MAX_AIRT1M MAX_AIRT1M Maximum value for the air temperature at 1m above ground celsius real N_AIRT1M N_AIRT1M Number of observations for this average dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real COHM_ICESURFCHANGE_DAILY COHM - Ice Surface Change (Daily) mcmlter-clim-cohm_icesurfchange-daily-20230705.csv 352920 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_icesurfchange-daily-20230705.csv METLOCID METLOCID Location code for Commonwealth glacier meteorology station - COHM string Location code for Commonwealth glacier meteorology station - COHM DATE_TIME Date_time Date sample was collected date mm/dd/yyyy Required entry None given AVG_ICESURFCHANGE_CM AVG_ICESURFCHANGE_CM Average Ice surface change centimeter 0.01 real Null None given STD_ICESURFCHANGE_CM STD_ICESURFCHANGE_CM Standard deviation for the Ice surface change centimeter 0.01 real Null None given MIN_ICESURFCHANGE_CM MIN_ICESURFCHANGE_CM Minimum value of the Ice surface change centimeter 0.01 real Null None given MAX_ICESURFCHANGE_CM MAX_ICESURFCHANGE_CM Maximum daily value for the Ice surface temperature thermal infrared centimeter 0.01 real Null None given N_ICESURFCHANGE_CM N_ICESURFCHANGE_CM Number of observations for this average dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real COHM_RADN_DAILY COHM - Solar Radiation (Daily) mcmlter-clim-cohm_radn-daily-20230705.csv 2411734 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_radn-daily-20230705.csv METLOCID METLOCID Location code for this met station string Location code for this met station DATE_TIME Date_time Date sample was collected date mm/dd/yyyy AVG_LWRADIN AVG_LWRADIN Daily avgerage of the Incoming longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 STD_LWRADIN STD_LWRADIN Standard deviation of the daily Incoming longwave radiation distribution based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MIN_LWRADIN MIN_LWRADIN Daily minimum for the incoming longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MAX_LWRADIN MAX_LWRADIN Maximum daily incoming longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given N_LWRADIN N_LWRADIN Number of data records included for the statistics dimensionless real AVG_LWRADIN2 AVG_LWRADIN2 Daily average of the Incoming longwave radiation based on applying instrument-specific multiplier, a replicate. W/m2 0.1 real -5 400 STD_LWRADIN2 STD_LWRADIN2 Standard deviation of the daily Incoming longwave radiation distribution based on applying instrument-specific multiplier. A replicate W/m2 0.1 real -5 400 Null None given MIN_LWRADIN2 MIN_LWRADIN2 Daily minimum for the incoming longwave radiation based on applying instrument-specific multiplier - a replicate W/m2 0.1 real -5 400 Null None given MAX_LWRADIN2 MAX_LWRADIN2 Maximum daily incoming longwave radiation based on applying instrument-specific multiplier - a replicate W/m2 0.1 real -5 400 Null None given N_LWRADIN2 N_LWRADIN2 Number of data records used to compute the statistics dimensionless real AVG_LWRADOUT AVG_LWRADOUT Daily average of the outbound (reflected) longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 STD_LWRADOUT STD_LWRADOUT Standard deviation of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MIN_LWRADOUT MIN_LWRADOUT Daily minimum for the outgoing longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MAX_LWRADOUT MAX_LWRADOUT Maximum daily outgoing longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given N_LWRADOUT N_LWRADOUT Number of data records included for the statistics dimensionless real AVG_LWRADOUT2 AVG_LWRADOUT2 Daily average of the outgoing longwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 STD_LWRADOUT2 STD_LWRADOUT2 Standard deviation of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MAX_LWRADOUT2 MAX_LWRADOUT2 Maximum of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier W/m^2 real N_LWRADOUT2 Number of Observations Number of observations for the daily stats. dimensionless real AVG_SWRADIN AVG_SWRADIN Daily avgerage of the Incoming shortwave radiation based on applying instrument-specific multiplier W/m2 0.1 real -5 400 MIN_LWRADOUT2 MIN_LWRADOUT2 Minimum of the daily outgoing longwave radiation distribution based on applying instrument-specific multiplier W/m^2 real STD_SWRADIN STD_SWRADIN Standard deviation of the daily Incoming shortwave radiation distribution based on applying instrument-specific multiplier W/m2 0.1 real -5 400 Null None given MIN_SWRADIN MIN_SWRADIN Minimum of the daily Incoming shortwave radiation distribution based on applying instrument-specific multiplier W/m^2 real MAX_SWRADIN MAX_SWRADIN Maximum incoming shortwave radiation/solar flux W/m2 0.1 real Null None given N_SWRADIN Number of Observations Number of observations for the derived data statistics. dimensionless real AVG_SWRADOUT AVG_SWRADOUT Average of the outgoing shortwave radiation/solar flux W/m2 0.1 real Null None given STD_SWRADOUT STD_SWRADOUT Standard deviation for the outgoing shortwave radiation/solar flux W/m2 0.1 real Null None given MIN_SWRADOUT MIN_SWRADOUT Minimum outgoing shortwave radiation/solar flux W/m2 0.1 real Null None given MAX_SWRADOUT MAX_SWRADOUT Maximum outgoing shortwave radiation/solar flux W/m2 0.1 real Null None given N_SWRADOUT Number of Observations Number of observations for the stats. dimensionless real AVG_THMIR AVG_THMIR Average of the thermal infrared surface temperature celsius 0.01 real Null None given STD_THMIR STD_THMIR Standard deviation for the thermal infrared surface temperature distribution celsius 0.01 real Null None given MIN_THMIR MIN_THMIR Minimum of the thermal infrared surface temperature celsius 0.01 real Null None given MAX_THMIR MAX_THMIR Maximum of the thermal infrared surface temperature celsius 0.01 real Null None given N_THMIR Number of Observations Number of observations for the daily stats. dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real COHM_RH_DAILY COHM - Relative Humidity (Daily) mcmlter-clim-cohm_rh-daily-20230705.csv 552749 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_rh-daily-20230705.csv METLOCID METLOCID Location code for Commonwealth glacier meteorology station - COHM string Location code for Commonwealth glacier meteorology station - COHM DATE_TIME Date_time Date sample was collected date mm/dd/yyyy Required entry None given AVG_RH Daily mean RH Daily average of the relative humidity values dimensionless real STD_RH Standard Dev. of daily RH The standard deviation for the distribution of daily rel. humidity values dimensionless real MIN_RH Minimum RH The daily minimum of the relative humidity dimensionless real MAX_RH Maximum RH The daily maximum of the relative humidity dimensionless real N_RH Number of Observations Number of observations for the daily stats. dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real COHM_SURFTEMP_DAILY COHM - Ice Surface Temperature (Daily) mcmlter-clim-cohm_surftemp-daily-20230705.csv 377039 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_surftemp-daily-20230705.csv METLOCID METLOCID Location code for Commonwealth glacier meteorology station - COHM string Location code for Commonwealth glacier meteorology station - COHM DATE_TIME Date_time Date sample was collected date mm/dd/yyyy Required entry None given AVG_SURFTEMP AVG_SURFTEMP Daily average Ice surface temperature thermal infrared celsius 0.01 real Null None given STD_SURFTEMP STD_SURFTEMP Standard deviation for the daily Ice surface temperature thermal infrared celsius 0.01 real Null None given MIN_SURFTEMP MIN_SURFTEMP Minimum daily value of the Ice surface temperature thermal infrared celsius 0.01 real Null None given MAX_SURFTEMP MAX_SURFTEMP Maximum daily value for the Ice surface temperature thermal infrared celsius 0.01 real Null None given N_SURFTEMP N_SURFTEMP Number of observations for this average dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real COHM_WSPD_DAILY COHM - Wind Speed (Daily) mcmlter-clim-cohm_wspd-daily-20230705.csv 528698 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-cohm_wspd-daily-20230705.csv METLOCID METLOCID METLOCID identification code for the meteorological station string METLOCID identification code for the meteorological station DATE_TIME DATE_TIME Date when measurement was taken date DD/MM/YYYY AVG_WSPD AVG_WSPD Average of the daily values of the wind speed metersPerSecond real STDDEV_WSPD STDDEV_WSPD Standard deviation of the daily distribution of the wind speed metersPerSecond real MIN_WSPD MIN_WSPD Minimum value of the wind speed for the period of one day metersPerSecond real MAX_WSPD MAX_WSPD Maximum value of the wind speed for the period of one day metersPerSecond real N_WSPD N_WSPD Number of data points used to calculate these statistics. dimensionless real N_COMMENTS N_COMMENTS N_COMMENTS string N_COMMENTS COHM_ICET_DAILY COHM - Ice Temperature (Daily) COHM_ICET_DAILY.csv 667245 44 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/COHM_ICET_DAILY.csv
See task list
Fenwall Thermisters (192-102DEW-A01) and Caddock Tetrinox(TF050N) hi precision resistor (10Kohm) with +-5ppm/celcius and 0.01percent Resistor
Fenwall Thermisters (192-102DEW-A01) and Caddock Tetrinox(TF050N) hi precision resistor (10Kohm) with +-5ppm/celcius and 0.01percent Resistor
METLOCID METLOCID Location code for Comonwealth Glacier meteorology station string Location code for Comonwealth Glacier meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date DD/MM/YYYY AVG_ICET50CM AVG_ICET50CM Ice temperature daily average at 50 cm depth celsius real Null None given STD_ICET50CM STD_ICET50CM Ice temperature standard deviation of daily distribution at 50 cm depth celsius 0.01 real Null None given MIN_ICET50CM MIN_ICET50CM Daily minimum of Ice temperature at 50 centimeters depth celsius 0.01 real Null None given MAX_ICET50CM MAX_ICET50CM Daily maximum of Ice temperature at 50 centimeters depth celsius 0.01 real Null None given N_ICET50CM N_ICET50CM Ice temperature at 50 cm depth dimensionless 0.01 real Null None given AVG_ICET1M AVG_ICET1M daily average for the Ice temperature at 1 meter depth celsius 0.01 real Null None given STD_ICET1M STD_ICET1M standard deviation of distribution of the Ice temperature at 1 meter depth celsius real MIN_ICET1M MIN_ICET1M Daily minimum of the Ice temperature at 1 meter depth celsius 0.01 real Null None given MAX_ICET1M MAX_ICET1M Daily maximum of the ice temperature at 1 meter depth celsius 0.01 real Null None given N_ICET1M Number of Observations Number of observations for the daily stats. dimensionless real AVG_ICET20CM AVG_ICET20CM Ice temperature daily average at 20cm celsius 0.01 real Null None given STD_ICET20CM STD_ICET20CM Standard deviation of the Ice temperature distribution at 20 cm depth celsius 0.01 real Null None given MIN_ICET20CM MIN_ICET20CM Minimum daily of the ice temperature at 20 cm depth celsius 0.01 real Null None given MAX_ICET20CM MAX_ICET20CM Maximum ice temperature at 20cm celsius 0.01 real Null None given N_ICET20CM N_ICET20CM number of data points used in the stats. for ce temperature at 20cm dimensionless 0.01 real Null None given AVG_ICEELEVATION AVG_ICEELEVATION Average elevation of ice surface measured from fixed datum (based on original height of sonic) centimeter 0.01 real Null None given STD_ICEELEVATION STD_ICEELEVATION standard deviation of the ice elevation centimeter real ICET_COMMENTS ICET_COMMENTS Noted comments by the investigator about the particular measure of ICET_ string Noted comments by the investigator about the particular measure of ICET_ MIN_ICEELEVATION MIN_ICEELEVATION Minimum elevation of ice surface measured from fixed datum (based on original height of sonic) centimeter 0.01 real Null None given MAX_ICEELEVATION MAX_ICEELEVATION Maximum elevation of ice surface measured from fixed datum (based on original height of sonic) centimeter 0.01 real Null None given N_ICEELEVATION Number of Observations Number of observations for the daily stats. dimensionless real