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Home > High frequency measurements from Lake Vida Meteorological Station (VIAM) in Victoria Valley, Antarctica from 1995 to present
Summary

Abstract: 

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.

Date Range: 

November 24, 1995 to December 19, 2018
Dataset(s)

Description: 

VIAM - Air Temperature

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
AIRT3M
  • Label:
  • Definition: Average air temperature at 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
AIRT_COMMENTS
  • Label: air temperature comments
  • Definition: Noted comments by the investigator about the particular measure of air temperature
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_AIRT.csv [1] (26.68 MB)

...or query the dataset by variables and dates of interest:

[2]

Description: 

VIAM - Solar Radiation

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
PAR
  • Label:
  • Definition: Photosynthetically active radiation
  • Type: Physical quantity
  • Unit: micromols/second/meter2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
SWRADIN
  • Label:
  • Definition: Incoming shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 900
  • Minimum: 0
  • Precision: 0.1
  • Missing values:
    • Null = None given
SWRADOUT
  • Label:
  • Definition: Outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: 900
  • Minimum: 0
  • Precision: 0.1
  • Missing values:
    • Null = None given
RADN_COMMENTS
  • Label: radiation comments
  • Definition: Noted comments by the investigator about the particular measure of radiation
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_RADN.csv [3] (47.04 MB)

...or query the dataset by variables and dates of interest:

[4]

Description: 

VIAM - Relative Humidity

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
RH
  • Label:
  • Definition: Relative humidity at 3 meters
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
RH_COMMENTS
  • Label: relative humidity comments
  • Definition: Noted comments by the investigator about the particular measure of relative humidity
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_RH.csv [5] (24.77 MB)

...or query the dataset by variables and dates of interest:

[6]

Description: 

VIAM - Soil Temperature

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
SOILT0CM
  • Label:
  • Definition: Soil temperature at 0 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
SOILT5CM
  • Label:
  • Definition: Soil temperature at 5 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
SOILT10CM
  • Label:
  • Definition: Soil temperature at 10 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
SOILT_COMMENTS
  • Label:
  • Definition: Noted comments by the investigator about the particular measure of SOILT
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_SOILT.csv [7] (36.62 MB)

...or query the dataset by variables and dates of interest:

[8]

Description: 

VIAM - Surface Change

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
SURF_CHANGE
  • Label:
  • Definition: Surface Height Change - snowfall / sediment accumulation or loss
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.4
  • Missing values:
    • Null = None given
SURFCHANGE_COMMENTS
  • Label: surface change comments
  • Definition: Noted comments by the investigator about the particular measure of surface change
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_SURFCHANGE.csv [9] (20.62 MB)

...or query the dataset by variables and dates of interest:

[10]

Description: 

VIAM - Wind Direction & Speed

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Lake Vida meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
WDIR
  • Label:
  • Definition: Average wind direction
  • Type: Physical quantity
  • Unit: degreesfromnorth
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WDIRSTD
  • Label:
  • Definition: Standard deviation of wind direction
  • Type: Physical quantity
  • Unit: degreesfromnorth
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WSPD
  • Label:
  • Definition: Wind speed
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WSPDMAX
  • Label:
  • Definition: Maximum wind speed
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WSPDMIN
  • Label:
  • Definition: Minimum wind speed
  • Type: Physical quantity
  • Unit: metersPerSecond
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WIND_COMMENTS
  • Label:
  • Definition: Noted comments by the investigator about the particular measure of WIND
  • Type: Nominal
  • Missing values: None specified

File: 

VIAM_WIND.csv [11] (38.07 MB)

...or query the dataset by variables and dates of interest:

[12]

Short name: 

VIAM

Dataset ID: 

7016
People

Principal Investigator(s): 

Peter T. Doran [13]
Andrew G. Fountain [14]

Contact: 

McMurdo Dry Valleys LTER Information Manager [15]

Associated Personnel: 

Field Technician
Krista F. Myers [16]
Data Manager
Renée F. Brown [17]
Former Field Crew
Maciej K. Obryk [18]
Former Field Crew
Hassan Basagic [19]
Former Field Crew
Thomas Nylen [20]
Former Data Manager
Inigo San Gil [21]
Related

Related publications: 

McMurdo Dry Valleys Long-Term Ecological Research (LTER): LTER automatic weather network (LAWN) [22]
Methodology

Purpose: 

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: http://www.mcmlter.org/data/meteorology/tasks/task_lists.htm [23] 

Methods: 

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 [24]

Seasonal Task Summary To view the data post-processing steps for each season please visit: http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm [25]

Maintenance: 

 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.
Categories

Research Section: 

MCM Keywords: 

Keywords: 

Source URL: http://mcm.lternet.edu/content/high-frequency-measurements-lake-vida-meteorological-station-viam-victoria-valley-antarctica

Links
[1] http://mcm.lternet.edu/file/5647/download?token=Fi1WPIWt1UKHkSfirv7DoN40_0J3tCF11h4Mn-QnDsQ
[2] http://mcm.lternet.edu/node/2710/data
[3] http://mcm.lternet.edu/file/5648/download?token=p6US4hnA6YTHUfHFxrS4juDylpPibeNcIthArDE4OgE
[4] http://mcm.lternet.edu/node/2711/data
[5] http://mcm.lternet.edu/file/5649/download?token=JeVvF9IMvoeSH0JssaBT5evuOH21S4dqaX6qQSAjxr4
[6] http://mcm.lternet.edu/node/2712/data
[7] http://mcm.lternet.edu/file/5650/download?token=xhVhVeWphLAgWQH9tvvKincIwzP5QTKdVajM-9a0D9U
[8] http://mcm.lternet.edu/node/2713/data
[9] http://mcm.lternet.edu/file/5651/download?token=9DUVhkp3abvlE62TiIPaUClgtNau5Gje6yzlp8DwUiI
[10] http://mcm.lternet.edu/node/2715/data
[11] http://mcm.lternet.edu/file/5652/download?token=_PYeRhzWVtqNkY5N08XbaOwkF46kU3ggI2GO598zF6I
[12] http://mcm.lternet.edu/node/2714/data
[13] http://mcm.lternet.edu/people/peter-t-doran
[14] http://mcm.lternet.edu/people/andrew-g-fountain
[15] http://mcm.lternet.edu/people/mcmurdo-dry-valleys-lter-information-manager
[16] http://mcm.lternet.edu/people/krista-f-myers
[17] http://mcm.lternet.edu/people/ren%C3%A9e-f-brown
[18] http://mcm.lternet.edu/people/maciej-k-obryk
[19] http://mcm.lternet.edu/people/hassan-basagic
[20] http://mcm.lternet.edu/people/thomas-nylen
[21] http://mcm.lternet.edu/people/inigo-san-gil
[22] http://mcm.lternet.edu/content/mcmurdo-dry-valleys-long-term-ecological-research-lter-lter-automatic-weather-network-lawn
[23] http://www.mcmlter.org/data/meteorology/tasks/task_lists.htm
[24] http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf
[25] http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm
[26] http://mcm.lternet.edu/section/meteorology
[27] http://mcm.lternet.edu/section/15-minute-data-level-1
[28] http://mcm.lternet.edu/station-keywords/air-temperature
[29] http://mcm.lternet.edu/station-keywords/humidity
[30] http://mcm.lternet.edu/station-keywords/lake
[31] http://mcm.lternet.edu/station-keywords/meteorology
[32] http://mcm.lternet.edu/station-keywords/par
[33] http://mcm.lternet.edu/station-keywords/photosynthetic-active-radiation
[34] http://mcm.lternet.edu/station-keywords/photosynthetically-active-radiation
[35] http://mcm.lternet.edu/station-keywords/radiation
[36] http://mcm.lternet.edu/station-keywords/relative-humidity
[37] http://mcm.lternet.edu/station-keywords/rh
[38] http://mcm.lternet.edu/station-keywords/soil
[39] http://mcm.lternet.edu/station-keywords/soil-temperature
[40] http://mcm.lternet.edu/station-keywords/temperature
[41] http://mcm.lternet.edu/station-keywords/wind
[42] http://mcm.lternet.edu/station-keywords/wind-direction
[43] http://mcm.lternet.edu/station-keywords/wind-speed
[44] http://mcm.lternet.edu/lter-controlled-vocabulary/air-temperature
[45] http://mcm.lternet.edu/lter-controlled-vocabulary/meteorology
[46] http://mcm.lternet.edu/lter-controlled-vocabulary/photosynthetically-active-radiation
[47] http://mcm.lternet.edu/lter-controlled-vocabulary/relative-humidity
[48] http://mcm.lternet.edu/lter-controlled-vocabulary/wind
[49] http://mcm.lternet.edu/lter-controlled-vocabulary/wind-speed