Published on McMurdo Dry Valleys LTER (http://mcm.lternet.edu)

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 Taylor Glacier Meteorological Station (TARM), located in Taylor Valley. TARM was established in 1994, during the 94/95 field season.

Date Range: 

November 21, 1994 to December 18, 2018
Dataset(s)

Description: 

TARM - Air Temperature

Variables (click to expand): 

DATASET_CODE
  • Label: DATASET CODE
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label: MET Location ID
  • Definition: Location code for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date Time
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
AIRT1M
  • Label: Air Temperature at 1m
  • Definition: Average air temperature at 1 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
AIRT3M
  • Label: Air Temperature at 3m
  • 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
AIRTMAX
  • Label: Air Temperature Maximum
  • Definition: Maximum air temperature at 2.5 - 3 m above ground
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
AIRTMIN
  • Label: Air Temperature Minimum
  • Definition: Minimum air temperature at 2.5 - 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: 

TARM_AIRT.csv [1] (37.28 MB)

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

[2]

Description: 

TARM - Ice Surface Change

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset Code
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label: Met Location ID
  • Definition: Location code for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date Time
  • Definition: Date/time of sample (New Zealand DST, +13 UTC)
  • Type: Date/time
  • Date format: MM/DD/YYYY HH24:MI
  • Missing values: None specified
DEPTH
  • Label: Surface Height Change
  • Definition: Surface Height Change - snowfall accumulation / loss - distance from sensor to surface
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.4
  • Missing values:
    • Null = None given
DEPTH_COMMENTS
  • Label: Depth Comments
  • Definition: Noted comments by the investigator about the particular measure of DEPTH_
  • Type: Nominal
  • Missing values: None specified
DIST_TO_SURFACE
  • Label: Distance to surface
  • Definition: the distance between the sensor and the surface in meters
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.4
  • Missing values:
    • Null = None given

File: 

TARM_DEPTH.csv [3] (13.96 MB)

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

[4]

Description: 

TARM - Ice Surface Temperature

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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
ICESURF
  • Label:
  • Definition: Ice Surface Temperature
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
ICESURF_COMMENTS
  • Label: ice surface temperature comments
  • Definition: Noted comments by the investigator about the particular measure of ice surface temperature
  • Type: Nominal
  • Missing values: None specified

File: 

TARM_ICESURF.csv [5] (22.93 MB)

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

[6]

Description: 

TARM - Ice Temperature

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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
ICET20CM
  • Label:
  • Definition: Ice temperature at 20 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
ICET1M
  • Label:
  • Definition: Ice temperature at 1 meter depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
ICET_COMMENTS
  • Label:
  • Definition: Noted comments by the investigator about the particular measure of ICET_
  • Type: Nominal
  • Missing values: None specified
ICET50CM
  • Label:
  • Definition: Ice temperature at 50 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
NEWICET25CM
  • Label:
  • Definition: Ice temperature at 25 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
NEWICET50CM
  • Label:
  • Definition: Ice temperature at 50 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
NEWICET75CM
  • Label:
  • Definition: Ice temperature at 75 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
NEWICET100CM
  • Label:
  • Definition: Ice temperature at 100 cm depth
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given

File: 

TARM_ICET.csv [7] (48.14 MB)

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

[8]

Description: 

TARM - Solar Radiation

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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
LWRADIN
  • Label:
  • Definition: Incoming longwave radiation based on applying instrument-specific multiplier
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
LWRADIN2
  • Label:
  • Definition: Incoming longwave radiation calculated from thermopile, case thermistor and the dome or hemisphere thermistor measurements
  • Type: Physical quantity
  • Unit: W/m2
  • 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: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
SWRADOUT
  • Label:
  • Definition: Outgoing shortwave radiation/solar flux
  • Type: Physical quantity
  • Unit: W/m2
  • Maximum: Not specified
  • Minimum: Not specified
  • 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: 

TARM_RADN.csv [9] (55.05 MB)

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

[10]

Description: 

TARM - Relative Humidity

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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
RH1M
  • Label:
  • Definition: Relative humidity at 1 meter
  • 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: 

TARM_RH.csv [11] (31.61 MB)

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

[12]

Description: 

TARM - Wind Direction & Speed

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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: 

TARM_WIND.csv [13] (49.71 MB)

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

[14]

Description: 

TARM - Water Vapor Density

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code for given set of information for Taylor Glacier meteorology station
  • Type: Nominal
  • Missing values: None specified
METLOCID
  • Label:
  • Definition: Location code for Taylor Glacier 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
WVAPD
  • Label:
  • Definition: Water vapor density
  • Type: Physical quantity
  • Unit: gramspercubicmeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.1
  • Missing values:
    • Null = None given
WVAPD_COMMENTS
  • Label:
  • Definition: Noted comments by the investigator about the particular measure of WVAPD_
  • Type: Nominal
  • Missing values: None specified

File: 

TARM_WVAPD.csv [15] (799.01 KB)

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

[16]

Short name: 

TARM

Dataset ID: 

7013
People

Principal Investigator(s): 

Peter T. Doran [17]
Andrew G. Fountain [18]

Contact: 

McMurdo Dry Valleys LTER Information Manager [19]

Associated Personnel: 

Field Technician
Krista F. Myers [20]
Data Manager
Renée F. Brown [21]
Former Field Crew
Maciej K. Obryk [22]
Former Field Crew
Hassan Basagic [23]
Former Field Crew
Thomas Nylen [24]
Former Data Manager
Inigo San Gil [25]
Related

Related publications: 

McMurdo Dry Valleys Long-Term Ecological Research (LTER): LTER automatic weather network (LAWN) [26]
Methodology

Purpose: 

Meteorological data is collected year-round at each of MCM LTER stations. Data is 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 [27] 

Methods: 

During the 1994-1995 field season, the Taylor Glacier meteorological station was constructed at a latitude of 77 42.15845 S, longitude of 162 7.70264 E, and elevation of 334.1 meters above sea level. 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 20 minutes between November 21, 1994 and November 17, 1995 and every 15 minutes thereafter. 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 [28]
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 [29]

Maintenance: 

On September 8, 1999, at the request of Thomas Nylen, the data manager did some fine-tuning of the data. This included:

  1. Removal and flagging of WDirStD values between Nov 21, 1994 @ 15:20 and Jan 23, 1995 @ 9:20. Wind speed had already been flagged for this period, and it was determined that WDirStD values needed a similar approach.
  2. Revision of LwRadIn values between Dec 19, 1995 @ 19:15 and Jan 25, 1996 @ 9:30. The initial LwRadIn values were zero, or close to zero. During the same period, LwRadIn2 had values consistent with the operation of the instrument. Since LwRadIn2 modifies the LwRadIn values, it was concluded that the values for LwRadIn must have been lost. Thomas therefore resubmitted the correct values to use.

In May 2000, the 1999-2000 data was posted. In the process, Denise Steigerwald changed the layout of the files so that they were sorted by category (air temperatures, humidity, radiation, wind etc.) rather than by year. Files containing monthly and daily averages were generated and minor adjustments were made to the metadata. On May 31, 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 which was used initially). The error became quite large for very cold temperatures (the correction could grow 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 99.99 and 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, maximums and counts of the records represented in the Oracle database's meteorology tables. On June 29, 2004, Thomas Nylen flagged the incoming and outgoing shortwave radiation data between 11/21/1994 @ 1520 to 12/01/1995 @ 0945 as questionable because the values are significantly higher than L. Bonney during the time period. During this time period, two Licor pyranometers were used, but were wired similar to the Eppley Pyranometers and used the same lines in the program. It is suspected that the incorrect wiring and/or program caused the higher output. After two Eppley Pyranometers were installed on the station on December 1, 1995 @ 1045, the values matched the measurements made at Lake Bonney. In 2006, metadata was standardized by Chris Gardner and Inigo San Gil using the EML. 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 TARM dataset for the date range 1/24/2004 11:30 - 1/20/2007 13:00 (104,827 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. In 2013, ice depth/sonic was revised to account for discontinuities arising at the maintenance downtime In 2014, this metadata was enhanced using the Drupal Ecological Information Management System (Inigo San Gil)

Categories

Research Section: 

MCM Keywords: 

Keywords: 

Source URL: http://mcm.lternet.edu/content/high-frequency-measurements-taylor-glacier-meteorological-station-tarm-taylor-valley

Links
[1] http://mcm.lternet.edu/file/5592/download?token=Ep-_henFJYB4xKZadThjKIXj-X3-Odf9m9a74aLz52g
[2] http://mcm.lternet.edu/node/2696/data
[3] http://mcm.lternet.edu/file/3328/download?token=tqAa5y9cJguZE4vJWqFYRZ3-TpxWvCHpa7uKgBYsKcY
[4] http://mcm.lternet.edu/node/2697/data
[5] http://mcm.lternet.edu/file/5593/download?token=XynMLGes6z8grxNY1ht3XumDv-Y_xMIBhZMvFzYknvk
[6] http://mcm.lternet.edu/node/2703/data
[7] http://mcm.lternet.edu/file/4978/download?token=fxEvIgdHG1kUzCJlj9R3qcYx9IvGu5i897C-bZIHWTk
[8] http://mcm.lternet.edu/node/2698/data
[9] http://mcm.lternet.edu/file/5595/download?token=4Gf5f9XN7tghgD0V_rcYh21hE9Sx3x1g4N3-XQZrPrg
[10] http://mcm.lternet.edu/node/2699/data
[11] http://mcm.lternet.edu/file/5594/download?token=OYsP9Mz6-JKn0FcX63yZvHUGXisccuWPXNkIRa1vRRc
[12] http://mcm.lternet.edu/node/2700/data
[13] http://mcm.lternet.edu/file/5596/download?token=AUSGHr4TplY6x1uLE5ezZ-HNjoDvvp4aisSXdKG12i0
[14] http://mcm.lternet.edu/node/2701/data
[15] http://mcm.lternet.edu/file/3333/download?token=zvIhNhFBnPqN26XhL0eVbXCQTyrioP1vprD_Z_O_Tmc
[16] http://mcm.lternet.edu/node/2702/data
[17] http://mcm.lternet.edu/people/peter-t-doran
[18] http://mcm.lternet.edu/people/andrew-g-fountain
[19] http://mcm.lternet.edu/people/mcmurdo-dry-valleys-lter-information-manager
[20] http://mcm.lternet.edu/people/krista-f-myers
[21] http://mcm.lternet.edu/people/ren%C3%A9e-f-brown
[22] http://mcm.lternet.edu/people/maciej-k-obryk
[23] http://mcm.lternet.edu/people/hassan-basagic
[24] http://mcm.lternet.edu/people/thomas-nylen
[25] http://mcm.lternet.edu/people/inigo-san-gil
[26] http://mcm.lternet.edu/content/mcmurdo-dry-valleys-long-term-ecological-research-lter-lter-automatic-weather-network-lawn
[27] http://www.mcmlter.org/data/meteorology/tasks/task_lists.htm
[28] http://mcmlter.lternet.edu/data/meteorology/methods/Interval_Dates.pdf
[29] http://mcmlter.lternet.edu/data/meteorology/tasks/task_lists.htm
[30] http://mcm.lternet.edu/section/meteorology
[31] http://mcm.lternet.edu/section/15-minute-data-level-1
[32] http://mcm.lternet.edu/station-keywords/air-temperature
[33] http://mcm.lternet.edu/station-keywords/depth
[34] http://mcm.lternet.edu/station-keywords/glacier
[35] http://mcm.lternet.edu/station-keywords/humidity
[36] http://mcm.lternet.edu/station-keywords/ice
[37] http://mcm.lternet.edu/station-keywords/ice-temperature
[38] http://mcm.lternet.edu/station-keywords/meteorology
[39] http://mcm.lternet.edu/station-keywords/par
[40] http://mcm.lternet.edu/station-keywords/photosynthetic-active-radiation
[41] http://mcm.lternet.edu/station-keywords/radiation
[42] http://mcm.lternet.edu/station-keywords/relative-humidity
[43] http://mcm.lternet.edu/station-keywords/rh
[44] http://mcm.lternet.edu/station-keywords/shortwave-radiation
[45] http://mcm.lternet.edu/station-keywords/snow
[46] http://mcm.lternet.edu/station-keywords/solar-flux
[47] http://mcm.lternet.edu/station-keywords/solar-radiation
[48] http://mcm.lternet.edu/station-keywords/temperature
[49] http://mcm.lternet.edu/station-keywords/wind
[50] http://mcm.lternet.edu/station-keywords/wind-direction
[51] http://mcm.lternet.edu/station-keywords/wind-speed
[52] http://mcm.lternet.edu/lter-controlled-vocabulary/air-temperature
[53] http://mcm.lternet.edu/lter-controlled-vocabulary/ice
[54] http://mcm.lternet.edu/lter-controlled-vocabulary/meteorology
[55] http://mcm.lternet.edu/lter-controlled-vocabulary/relative-humidity
[56] http://mcm.lternet.edu/lter-controlled-vocabulary/soil-temperature
[57] http://mcm.lternet.edu/lter-controlled-vocabulary/solar-radiation
[58] http://mcm.lternet.edu/lter-controlled-vocabulary/wind
[59] http://mcm.lternet.edu/lter-controlled-vocabulary/wind-direction
[60] http://mcm.lternet.edu/lter-controlled-vocabulary/wind-speed