| Data Tables, Images, and Other Entities: |
| Data Table: | Air_Temperature_Units
View Table Metadata
|
| Data Table: | Ice_Surface_Change_Units
View Table Metadata
|
| Data Table: | File_and_Record_Numbers
View Table Metadata
|
| Data Table: | Ice_Temperature_Units
View Table Metadata
|
| Data Table: | Solar_Radiation_Units
View Table Metadata
|
| Data Table: | Relative_Humidity_Units
View Table Metadata
|
| Data Table: | Wind_Measurement_Units
View Table Metadata
|
| Data Table: | Water_Vapor_Density_Units
View Table Metadata
|
| Data Table: | Ice_Surface_Temperature_Units
View Table Metadata
|
|
Short Name: | taylor_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 Taylor Glacier Station - TARM
|
RH (relative humidity at 3m)
AIRT (air temperature)
WIND (wind speed, direction, etc)
RADN (radiation)
ICET (ice temperature)
ICESURF (Elevation of ice surface measured from fixed datum (based on original height of sonic) )
DEPTH (distance from ultrasonic ranger to surface - snow accumulation/loss)
FLINE (file and record numbers)
WVAPD (water vapor densities)
|
|
| 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 taylor |
|
| 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 Taylor Glacier meteorology station.
|
|
| Keywords: |
|
|
- meteorology
(theme)
- temperature
(theme)
- air temperature
(theme)
- ice temperature
(theme)
- wind
(theme)
- relative humidity
(theme)
- solar radiation
(theme)
- snow depth
(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 Taylor Glacier meteorology station is located at a latitude of 77-44-24.81758 S,
a longitude of 162-07-42.15845 E, and an elevation of 334.13173 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: | 162.12838 degrees
|
| East: | 162.12837 degrees
|
| North: | -77.70264 degrees
|
| South: | -77.70265 degrees
|
|
Mimimum Altitude: | 335 meter |
|
Maximum Altitude: | 334 meter |
|
| Temporal Coverage: |
|
Begin:
|
|
|
End:
|
|
|
|
| Maintenance: |
|
Description:
|
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 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.
|
|
|
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:
|
|
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 Coverage:
|
| Geographic Coverage: |
|
Geographic Description: | The Taylor Glacier meteorology station is located at a latitude of 77-44-24.81758 S,
a longitude of 162-07-42.15845 E, and an elevation of 334.13173 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: | 162.12838 degrees
|
| East: | 162.12837 degrees
|
| North: | -77.70264 degrees
|
| South: | -77.70265 degrees
|
|
Mimimum Altitude: | 335 meter |
|
Maximum Altitude: | 334 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
|
|
|
|