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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.