uid=MCM,o=EDI,dc=edirepository,dc=org all public read FRLM_DAILY Daily measurement summaries from Lake Fryxell Meteorological Station (FRLM), 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
2023-06-06 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 data package contains daily measurement summaries derived from 15-minute data generated by the Lake Fryxell Meteorological Station (FRLM), located in Taylor Valley. BOYM was established in 1993, during the 93/94 field season.
air temperature meteorology PAR photosynthetic active radiation photosynthetically active radiation relative humidity RH soil temperature surface height wind wind speed 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) are processed and provided as Level 1 data on the MCM LTER website. Field notes, sensor information, processing procedures, QA/QC, and metadata are 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-lake-fryxell-meteorological-station-frlm-mcmurdo-dry-valleys Located on small island in Lake Fryxell.ID: FRLM 163.170100000000 163.170100000000 -77.611300000000 -77.611300000000 25 25 meter 1993-12-07 2022-12-10 McMurdo Dry Valleys LTER Information Manager im@mcmlter.org McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER
When the McMurdo Dry Valley LTER project began in December, 1993, a lake-ice meteorology station was already set up at Lake Fryxell. It was a 6 foot tower built by Rich Harnish in ~1989, but had not collected data for at least a year. Peter Doran, noting that the problem was power related (since the battery was under water and the voltage was less than 5), righted the station, and rebuilt it with new power supply, a new wind monitor, new CR10, new solar panel, and added a quantum sensor. The under water light sensors were not hooked up again nor was the barometric pressure sensor. The lake-ice station was operated from 7 December 1993 to 6 January 1994 (this lake-ice station is located in the same table as the Lake Fryxell shore station and is noted with the METLOCID=FRIM). At that time, it was decided that maintenance of the records at the site of the old Fryxell land station was more important than the ice station so the ice station was cannibalized to re-establish the Lake Fryxell shore station, (which had been destroyed by wind the previous winter (METLOCID=FRLM)). The station was based on a 6 foot tripod which set it apart from the other Taylor Valley stations, but a 10 foot tower was subsequently installed in year 2. The land station is located a few meters above the old site to avoid rising lake levels. On June 25, 2001 @ 0230 the station mast broke and blew over, breaking the wind monitor. Station was taken apart on November 16, 2001, with the sensors except wind temporally set up on what was left of the station. On November 27, 2001 the station was reconstructed and was made operational again. Mark all values from June to November as bad or questionable except the soil temperatures 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: 10 minutes from December 7, 1993 to January 6, 1994 and January 7, 1994 to January 12, 1994, three hours from January 6, 1994 to January 7, 1994 and January 12, 1994 to November 28, 1994, 20 minutes between November 28, 1994 and November 21, 1995, and 15 minutes thereafter. This has resulted in approximately 20 values being recorded for final storage in every output interval. Primary measurements made on Lake Fryxell meteorology station, instrumentation used, and time of initiation are shown in the following table: In 2007, it was realized that the RH error was still present in parts of the dataset. Hasan Basagic made the above corrections to the FRLM dataset for the date range 1/23/2004 11:15 - 12/21/2006 13:30 (102,058 records). In September, 2007 the information manager (Chris Gardner) removed all old RH data and re-inserted then newly calculated values and associated comments. The original files are archive in the 'submitted data' section of the mcmlter server. Sampling and Averaging Intervals For Sampling frequency and Data Logger output and averaging intervals please visit:http://mcmlter.ltenet.edu/data/meteorology/methods/Interval_Dates.pdf
FRLM_AIRT_DAILY FRLM - Air Temperature (Daily) mcmlter-clim-frlm_airt-daily-20230605.csv 663035 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_airt-daily-20230605.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 Required entry None given AVG_AIRT3M AVG_AIRT3M Average air temperature at 3 m above ground celsius 0.01 real Null None given STD_AIRT3M STD_AIRT3M Standard deviation for the air temperature at 3 m above ground celsius 0.01 real Null None given MIN_AIRT3M MIN_AIRT3M Minimum value of the air temperature at 3 m above ground celsius 0.01 real Null None given MAX_AIRT3M MAX_AIRT3M Maximum value for the air temperature at 1.3 m above ground celsius 0.01 real Null None given N_AIRT3M N_AIRT3M Number of observations for this average dimensionless real AVG_AIRTDEL3M1 AVG_AIRTDEL3M1 Average of air temperature at 3 m minus air temperature at 1 m celsius 0.01 real Null None given STD_AIRTDEL3M1 STD_AIRTDEL3M1 Standard deviation of the air temperature distribution at 3 m minus air temperature at 1 m celsius 0.01 real Null None given MIN_AIRTDEL3M1 MIN_AIRTDEL3M1 Minimum value of the air temperature at 3 m minus air temperature at 1 m celsius 0.01 real Null None given MAX_AIRTDEL3M1 MAX_AIRTDEL3M1 Maximum of the air temperature at 3 m minus air temperature at 1 m celsius 0.01 real Null None given N_AIRTDEL3M1 N_AIRTDEL3M1 Number of observations of the air temperature at 3 m minus air temperature at 1 meter above ground used for these statistics dimensionless 0.01 real Null None given N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real FRLM_RADN_DAILY FRLM - Solar Radiation (Daily) mcmlter-clim-frlm_radn-daily-20230605.csv 1132522 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_radn-daily-20230605.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 Required entry None given AVG_PAR AVG_PAR Average photosynthetically active radiation (PAR). W/m^2 0.01 real Null None given STD_PAR STD_PAR Standard deviation for the photosynthetically active radiation (PAR). W/m^2 0.01 real Null None given MIN_PAR MIN_PAR Minimum value of the photosynthetically active radiation (PAR). W/m^2 0.01 real Null None given MAX_PAR MAX_PAR Maximum value for the photosynthetically active radiation (PAR). W/m^2 0.01 real Null None given N_PAR N_PAR Number of observations for the photosynthetically active radiation (PAR) statistics dimensionless real AVG_SWRADIN AVG_SWRADIN Average for the short wave incoming radiation W/m^2 0.01 real Null None given STD_SWRADIN STD_SWRADIN Standard deviation for the short wave incoming radiation W/m^2 0.01 real Null None given MIN_SWRADIN MIN_SWRADIN Minimum value of the short wave incoming radiation W/m^2 0.01 real Null None given 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 for the short wave outbound radiation W/m^2 0.01 real Null None given STD_SWRADOUT STD_SWRADOUT standard devation of the the short wave outbound radiation W/m^2 0.01 real Null None given MIN_SWRADOUT MIN_SWRADOUT Minimum the short wave outbound radiation W/m^2 0.01 real Null None given MAX_SWRADOUT MAX_SWRADOUT Maximum soil temperature at 10 cm depth W/m^2 0.01 real Null None given N_SWRADOUT N_SWRADOUT Number of observations the short wave outbound radiation dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real FRLM_RH_DAILY FRLM - Relative Humidity (Daily) mcmlter-clim-frlm_rh-daily-20230605.csv 561660 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_rh-daily-20230605.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 Required entry None given AVG_RH AVG_RH Average of the relative humidity values dimensionless real STD_RH Standard Dev. of RH The standard deviation for the distribution of daily rel. humidity values dimensionless real MIN_RH Minimum RH The minimum of the relative humidity dimensionless real MAX_RH Maximum RH The 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 FRLM_SOILT_DAILY FRLM - Soil Temperature (Daily) mcmlter-clim-frlm_soilt-daily-20230605.csv 1359987 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_soilt-daily-20230605.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 Required entry None given AVG_SOILT0CM AVG_SOILT0CM Average soil temperature at ground celsius 0.01 real Null None given STD_SOILT0CM STD_SOILT0CM Standard deviation for the soil temperature at suface ground celsius 0.01 real Null None given MIN_SOILT0CM MIN_SOILT0CM Minimum value of the soil temperature at surface ground celsius 0.01 real Null None given MAX_SOILT0CM MAX_SOILT0CM Maximum value for the air temperature at 3 m above ground celsius 0.01 real Null None given N_SOILT0CM N_SOILT0CM Number of observations for this average dimensionless real AVG_SOILT5CM AVG_SOILT5CM Average soil temperature at 5cm below ground celsius 0.01 real Null None given STD_SOILT5CM STD_SOILT5CM Standard deviation for the soil temperature at 5cm below ground celsius 0.01 real Null None given MIN_SOILT5CM MIN_SOILT5CM Minimum value of the soil temperature at 5cm below ground celsius 0.01 real Null None given MAX_SOILT5CM MAX_SOILT5CM Maximum soil temperature at 5 cm depth celsius 0.01 real Null None given N_SOILT5CM N_SOILT5CM Number of observations for this average dimensionless real AVG_SOILT10CM AVG_SOILT10CM Average soil temperature at 10 cm depth celsius 0.01 real Null None given STD_SOILT10CM STD_SOILT10CM standard devation of the soil temperature at 10 cm depth celsius 0.01 real Null None given MIN_SOILT10CM MIN_SOILT10CM Minimum soil temperature at 10 cm depth celsius 0.01 real Null None given MAX_SOILT10CM MAX_SOILT10CM Maximum soil temperature at 10 cm depth celsius 0.01 real Null None given N_SOILT10CM N_SOILT10CM Number of observations used to compute these statistics dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real FRLM_SURF_DAILY FRLM - Surface Change (Daily) mcmlter-clim-frlm_surf-daily-20230605.csv 348370 1 1 \n column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_surf-daily-20230605.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 Required entry None given AVG_SURFELEVCHANGE AVG_SURFELEVCHANGE Average surface change - snowfall / sediment accumulation or loss centimeter 0.01 real Null None given STD_SURFELEVCHANGE STD_SURFELEVCHANGE Standard deviation for the surface change - snowfall / sediment accumulation or loss centimeter 0.01 real Null None given MIN_SURFELEVCHANGE MIN_SURFELEVCHANGE Minimum value of the surface change - snowfall / sediment accumulation or loss centimeter 0.01 real Null None given MAX_SURFELEVCHANGE MAX_SURFELEVCHANGE Maximum value for the surface - snowfall / sediment accumulation or loss centimeter 0.01 real Null None given N_SURFELEVCHANGE N_SURFELEVCHANGE Number of observations for this average dimensionless real N_COMMENTS N_COMMENTS Number of comments about the measurement in this period dimensionless real FRLM_WSPD_DAILY FRLM - Wind Speed (Daily) mcmlter-clim-frlm_wspd-daily-20230605.csv 514147 1 column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-frlm_wspd-daily-20230605.csv METLOCID Met station location ID Location code for this met station. string Location code for this met station. DATE_TIME Date and time Date and time sample was collected. date MM/DD/YYYY AVG_WSPD Average wind speed Average of the daily values of the wind speed. metersPerSecond real STDDEV_WSPD Standard deviation of the wind speed Standard deviation of the daily distribution of the wind speed metersPerSecond real MIN_WSPD Minimum wind speed Minimum value of the wind speed for the period of one day. metersPerSecond real MAX_WSPD Maximum wind speed 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 Comments Comments. string Comments.