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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)