uid=MCM,o=EDI,dc=edirepository,dc=org all public read VIAM High frequency measurements from Lake Vida Meteorological Station (VIAM), McMurdo Dry Valleys, Antarctica (1995-2022, 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
2023-07-08 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 15-minute data from the Lake Vida Meteorological Station (VIAM), located in Victoria Valley.
air temperature meteorology photosynthetically active radiation relative humidity wind wind speed LTER Controlled Vocabulary air temperature humidity lake meteorology PAR photosynthetic active radiation photosynthetically active radiation radiation relative humidity RH soil soil temperature temperature wind wind direction wind speed Station Keywords disturbance LTER Core Areas
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/high-frequency-measurements-lake-vida-meteorological-station-viam-mcmurdo-dry-valleys located on western shore of Lake VidaID: VIAM 161.800700000000 161.800700000000 -77.377800000000 -77.377800000000 351 351 meter 1995-11-24 2022-12-14 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  On September 6, 1999, the data manager added the 1998-1999 data to this dataset. In the process,she did some fine-tuning of the data, which included:         1. Addition of  PAR values between Nov 24, 1997 @ 11:30 and Jan 13, 1998 @ 12:00. Thiswas done at the request of Thomas Nylen.         On June 1, 2000, the 1999-2000 data was posted. In the process, Denise  Steigerwald changed thelayout of the files so that they were sorted by category (ait temperatures, humidity, radiation,wind etc.) rather than by year. Files containing monthly and daily averages were generated andminor adjustments were made to the metadata.    On June 1, 2000, relative humidity (RH) values were corrected for a systematic error in the measurement created by an instrument manufacturer error. All RH data with air temperatures below freezing  were corrected using the vapor pressure over ice (rather than over water whichwas used initially). The error became quite large for very cold temperatures (the correction couldgrow to around 30%). The formula used for the correction was:          RH_corr=RH_orig/((A*temp*temp)+(B*temp)+C) where         RH_corr = corrected relative humidity        RH_orig = original relative humidity         temp = air temperature         A = 4.165E-5        B = 9.7E-3        C = 1.0   For example, with an air temperature of -2.3 and RH_orig of 50.6, the RH_corr will be  51.7.Records that showed corrected RH values greater than or equal to 100 were changed to 99.99and flagged.        In June 2000, summary files were added to the web containing daily and monthly statistics.These were generated by creating "views" of daily and monthly means,  minimums, maximumsand counts of the records represented in the Oracle database's meteorology tables.   2022-03-01: Data from the 13-14 season (2012-12-28 10:45 through 2014-01-02 22:15) was replaced due to missing wind speed data and related errors noted by Doran.   July 2023: The RH sensor at this station was upgraded in January 2022. However, the measurements recorded by this new sensor are suspect. Consequently, no RH data have been released after 1/19/2022 10:45 while this issue is being investigated further. McMurdo Dry Valleys LTER Information Manager im@mcmlter.org McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER
The Lake Vida meteorological station was added to the McMurdo Dry Valley network in the 1995-1996 field season. It was established on the shore of Lake Vida in Victoria Valley, one of the largest lakes in the dry valleys, recently discovered to have a 19 m ice cover over a hypersaline brine of undetermined depth. 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 15 minutes. This has resulted in approximately 20 values being recorded for final storage in every output interval. Sampling and Averaging Intervals For Sampling frequency and Data Logger output and averaging intervals please visit: http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf Seasonal Task Summary To view the data post-processing steps for each season please visit: https://mcm.lternet.edu/meteorological-task-lists
VIAM_AIRT VIAM - Air Temperature mcmlter-clim-viam_airt-15min-20230706.csv 33260481 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_airt-15min-20230706.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI AIRT3M AIRT3M Average air temperature at 3 m above ground celsius 0.01 real Null None given AIRT_COMMENTS air temperature comments Noted comments by the investigator about the particular measure of air temperature string Noted comments by the investigator about the particular measure of air temperature VIAM_RADN VIAM - Solar Radiation mcmlter-clim-viam_radn-15min-20230706.csv 54383233 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_radn-15min-20230706.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI PAR PAR Photosynthetically active radiation micromols/second/meter2 0.1 real Null None given SWRADIN SWRADIN Incoming shortwave radiation/solar flux W/m2 0.1 real 0 900 Null None given SWRADOUT SWRADOUT Outgoing shortwave radiation/solar flux W/m2 0.1 real 0 900 Null None given RADN_COMMENTS radiation comments Noted comments by the investigator about the particular measure of radiation string Noted comments by the investigator about the particular measure of radiation VIAM_RH VIAM - Relative Humidity mcmlter-clim-viam_rh-15min-20220516.csv 29755774 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_rh-15min-20220516.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI RH RH Relative humidity at 3 meters percent 0.01 real Null None given RH_COMMENTS relative humidity comments Noted comments by the investigator about the particular measure of relative humidity string Noted comments by the investigator about the particular measure of relative humidity VIAM_SOILT VIAM - Soil Temperature mcmlter-clim-viam_soilt-15min-20230706.csv 45509511 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_soilt-15min-20230706.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI SOILT0CM SOILT0CM Soil temperature at 0 cm depth celsius 0.01 real Null None given SOILT5CM SOILT5CM Soil temperature at 5 cm depth celsius 0.01 real Null None given SOILT10CM SOILT10CM Soil temperature at 10 cm depth celsius 0.01 real Null None given SOILT_COMMENTS SOILT_COMMENTS Noted comments by the investigator about the particular measure of SOILT string Noted comments by the investigator about the particular measure of SOILT VIAM_SURFCHANGE VIAM - Surface Change mcmlter-clim-viam_surfchange-15min-20230706.csv 27499152 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_surfchange-15min-20230706.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI SURF_CHANGE SURF_CHANGE Surface Height Change - snowfall / sediment accumulation or loss centimeter 0.4 real Null None given SURFCHANGE_COMMENTS surface change comments Noted comments by the investigator about the particular measure of surface change string Noted comments by the investigator about the particular measure of surface change VIAM_WIND VIAM - Wind Direction and Speed mcmlter-clim-viam_wind-15min-20230706.csv 48838432 1 1 \n column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-clim-viam_wind-15min-20230706.csv DATASET_CODE DATASET_CODE Code for given set of information for Lake Vida meteorology station string Code for given set of information for Lake Vida meteorology station METLOCID METLOCID Location code for Lake Vida meteorology station string Location code for Lake Vida meteorology station DATE_TIME DATE_TIME Date/time of sample (New Zealand DST, +13 UTC) date MM/DD/YYYY HH24:MI WDIR WDIR Average wind direction degreesfromnorth 0.1 real Null None given WDIRSTD WDIRSTD Standard deviation of wind direction degreesfromnorth 0.1 real Null None given WSPD WSPD Wind speed metersPerSecond 0.1 real Null None given WSPDMAX WSPDMAX Maximum wind speed metersPerSecond 0.1 real Null None given WSPDMIN WSPDMIN Minimum wind speed metersPerSecond 0.1 real Null None given WIND_COMMENTS WIND_COMMENTS Noted comments by the investigator about the particular measure of WIND string Noted comments by the investigator about the particular measure of WIND
ratio of two quantities as percent composition (1:100)