| Data Tables, Images, and Other Entities: |
| Data Table: | Air_Temperature_Units
View Table Metadata
|
| Data Table: | File_and_Record_Numbers
View Table Metadata
|
| Data Table: | Solar_Radiation_Units
View Table Metadata
|
| Data Table: | Relative_Humidity_Units
View Table Metadata
|
| Data Table: | Soil_Temperature_Units
View Table Metadata
|
| Data Table: | Wind_Measurement_Units
View Table Metadata
|
| Data Table: | SnowHeight_SurfChange_Units
View Table Metadata
|
|
Short Name: | vida_met |
| Online Distribution Info: |
| Schema Name: | http://www.mcmlter.org/queries/met_results.jsp |
| Description: |
|
You can build your own query for all the data in this station using the URL
http://www.mcmlter.org/queries/met_results.jsp and the described parameters, or you can just
visit the URL http://www.mcmlter.org/queries/met_queries.jsp and simply use the form to build your
own metereology query from any McMurdo Dry Valleys Metereological station
|
|
Here is an example to query for the barometric pressure from March 1998 to
April 2000 at Lake Hoare:
http://www.mcmlter.org/queries/met_results.jsp?begDate=03/01/1998&endDate=04/01/2000&mask=MM/DD/YYYY%20HH24:Mi&metStation=HOEM&dataType=PRESSTA
|
|
variable (dataType) abbreviations list for Vida Station - VIAM
|
RH (relative humidity at 3m)
AIRT (air temperature)
WIND (wind speed, direction, etc)
SOILT (soil temperature)
RADN (radiation)
SURFCHANGE (soil surface change or snow depth)
FLINE (file and record numbers)
|
|
| begDate: |
|
| Desired begin date for the data, use format MM/DD/YYYY |
|
| endDate: |
|
| Desired End Date for the data query |
|
| mask: |
|
| Associated Date format for the data record. (I.e, a mask value that works here is
MM/DD/YYYY HH24:Mi or - decimal - for a decimal year) |
|
| metStation: |
|
| Code Name for the metereological station from which the data is asked, for this
station is vida - VIAM |
|
| dataType: |
|
| variable abbreviation for the parameter of interest, such as wind speed or air
temperature. For a list of the used abbreviations, see the description section
above |
|
|
| Data Set Owner(s): |
|
Individual: | Andrew G. Fountain |
|
Address: |
| Department of Geology, |
| 17 Cramer Hall, |
| 1721 SW Broadway, |
| Portland State University , |
| Portland, OR 97207-0751
USA |
|
|
Phone:
|
|
|
Email Address:
|
|
|
| Metadata Provider(s): |
|
Organization: | McMurdo Dry Valleys LTER |
|
Address: |
| Byrd Polar Research Center , |
| 108 Scott Hall, |
| 1090 Carmack Rd, |
| Columbus, OH 43210-1002 USA |
|
|
Phone:
|
|
|
Phone:
|
|
|
Email Address:
|
|
|
| Associated Party: |
|
Individual: | Hassan Basagic |
|
Address: |
| Department of Geology, |
| Portland State University , |
| Portland, OR 97207-0751
USA |
|
|
Email Address:
|
|
|
|
Role:
|
|
| Abstract: |
| |
As part of the Long Term Ecological Research in the McMurdo Dry Valleys of
Antarctica, meteorological data was collected from various locations throughout Beacon,
Taylor, Wright and Victoria Valleys. These files contain data for the Lake Vida meteorology
station.
|
|
| Keywords: |
|
|
- meteorology
(theme)
- temperature
(theme)
- air temperature
(theme)
- soil temperature
(theme)
- wind
(theme)
- relative humidity
(theme)
- solar radiation
(theme)
|
| Additional Information: |
| |
| Comments |
Meteorological data is collected year-round at each of the stations in the
McMurdo Dry Valleys of Antarctica. After retrieving this data (usually every January), the
parameters that are recorded are processed from level 0 (raw) to level 1 (processed, provided
on the web). The raw data file descriptions and task lists summarize what was done to get from
level 0 to level 1 for all station found at the following address:
http://www.mcmlter.org/data/meteorology/tasks/task_lists.htm
|
| Citations |
Doran, Peter T., Gayle L. Dana, Jordan T. Hastings and Robert A. Wharton, Jr.
1995. McMurdo Dry Valleys Long-Term Ecological Research (LTER): LTER automatic weather network
(LAWN). Antarctic Journal of the U.S. 30(5): 276-280.
|
| Notes |
Data contained in these files has been subjected to quality control standards
imposed by the investigator. The user of this data should be aware that, while efforts have
been taken to ensure that these data are of the highest quality, there is no guarantee of
perfection for the data contained herein and the possibility of errors exists. If you
encounter questionable data, please contact the MCM LTER data manager (telephone:
303-492-4639) so that the data can be corrected or qualified. Thus, these data may be modified
and future data will be appended.
|
|
| License and Usage Rights: |
| |
| MCM LTER data may be used freely with the following restrictions: |
The Principal Investigator be sent a notice stating reasons for acquiring any
data and a description of the publication intentions.
The Principal Investigator of the data set be sent a copy of the report or
manuscript prior to submission and be adequately cited in any resultant
publications.
A copy of any resultant publications should be sent to the McMurdo data
manager and principal investigator.
The end-user follow the guidelines set forth in the LTER Network Data Access
Policy, Data Access Requirements, and General Data Use Agreement found at
http://www.mcmlter.org/data_guidelines.htm
|
|
| Geographic Coverage: |
|
Geographic Description: | The Vida meteorology station is located at a latitude of 77 22.67082 S,
a longitude of 161 48.03439 E, and an elevation of 351.0 meters above sea level. Descriptions
of this and other McMurdo Dry Valley meteorology stations can be found at
http://www.mcmlter.org/data/meteorology/locations/metlocs.html |
|
Bounding Coordinates:
|
| West: | 161.80058 degrees
|
| East: | 161.80057 degrees
|
| North: | -77.37784 degrees
|
| South: | -77.37785 degrees
|
|
Mimimum Altitude: | 352 meter |
|
Maximum Altitude: | 351 meter |
|
| Temporal Coverage: |
|
Begin:
|
|
|
End:
|
|
|
|
| Maintenance: |
|
Description:
|
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 (air
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.
|
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 VIAM dataset for the date range 1/26/2004 11:00 - 12/16/2006 10:00 (100,850 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.
|
|
|
Frequency:
| |
| Contact: |
|
Organization: | McMurdo Dry Valleys LTER |
|
Position: | Data Manager |
|
Address: |
| Byrd Polar Research Center , |
| 108 Scott Hall, |
| 1090 Carmack Rd, |
| Columbus, OH 43210-1002 USA |
|
|
Phone:
|
|
|
Email Address:
|
|
|
| Publisher: |
|
Organization: | McMurdo Dry Valleys LTER |
|
Address: |
| Byrd Polar Research Center , |
| 108 Scott Hall, |
| 1090 Carmack Rd, |
| Columbus, OH 43210-1002 USA |
|
|
Phone:
|
|
|
| Methods Info: |
| Step 1: |
|
|
Description:
|
|
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 Coverage:
|
| Geographic Coverage: |
|
Geographic Description: | The Vida meteorology station is located at a latitude of 77 22.67082
S, a longitude of 161 48.03439 E, and an elevation of 351.0 meters above sea level.
Descriptions of this and other McMurdo Dry Valley meteorology stations can be found at
http://www.mcmlter.org/data/meteorology/locations/metlocs.html. |
|
Bounding Coordinates:
|
| West: | 161.80058 degrees
|
| East: | 161.80057 degrees
|
| North: | -77.37784 degrees
|
| South: | -77.37785 degrees
|
|
Mimimum Altitude: | 352 meter |
|
Maximum Altitude: | 351 meter |
|
|
|
Sampling Description:
|
| Sampling and Averaging Intervals |
For Sampling frequency and Data Logger output and averaging intervals please visit:
http://www.mcmlter.org/data/meteorology/methods/Interval_Dates.pdf
|
| Seasonal Task Summary |
To view the data post-processing steps for each season please visit:
http://www.mcmlter.org/data/meteorology/tasks/task_lists.htm
|
|
|
|