Data Set Citation
Priscu J.Vertical Profile of Photosynthetic Active Radiation in McMurdo Dry Valley Lakes.
knb-lter-mcm.0046.2 (http://metacat.lternet.edu:8080/knb/metacat/knb-lter-mcm.0046.2/mcm).
Data Tables, Images, and Other Entities:
Metadata download:Ecological Metadata Language (EML) File
Data Table:Units_And_Column_Descriptions
View Table Metadata
Short Name:parpro.dat
Online Distribution Info:
Download File:
http://www.mcmlter.org/queries/limno_results.jsp?begDate=01/01/0001&endDate=01/01/3000&dataType=PAR_PROFILE
Data Set Owner(s):
Individual: John Priscu
Address:
Department of Biology,
309 Lewis Hall,
Montana State University ,
Bozeman, MT 59717 USA
Phone:
(406)994-3250 (voice)
Email Address:
jpriscu@montana.edu
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:
614-292-3229 (voice)
Phone:
(614) 292-4697 (fax)
Email Address:
mcmlter@bprc.mps.ohio-state.edu
Abstract:
 
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, lakes were monitored for photosynthetic active radiation (PAR) levels. This data set exemplifies the vertical profile of underwater PAR profiles in perennial ice covered lakes and ambient PAR measured at the air-ice interface. Profile data can be used to calculate extinction coefficients for the water column and ice layer.
Keywords:
 
  • photosynthetic active radiation (theme)
  • light (theme)
  • extinction coefficient (theme)
  • lake (theme)
  • limnology (theme)
  • Antarctica (theme)
Additional Information:
 
Citations
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 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: Samples were collected from the East Lake Bonney, West Lake Bonney, Lake Hoare, and Lake Fryxell limnological sampling stations, located in the McMurdo Dry Valleys of Antarctica. Descriptions of these lakes
Bounding Coordinates:
West:  162  degrees
East:  163.6  degrees
North:  -77.2  degrees
South:  -77.8  degrees
Mimimum Altitude:0  meter
Maximum Altitude:1000  meter
Temporal Coverage:
Begin:
1993
End:
2006
Maintenance:
Description:
Data from this table was submitted to INSTAAR by John Priscu's team at Montana State University. The raw data files listed under 'file name' are the names of the original files submitted. The 1993/94 and 1994/95 datasets are Microsoft Excel version 6.0 files, and the 1995/96, 1996/97 and 1997/98 datasets are ascii text files. Upon arrival at INSTAAR, the data manager fine-tuned the location codes and limno runs to match those provided in the "locations, dates, codes for lake chemistry, biology samples" file. The file was imported into Microsoft Access on INSTAAR's Unix system, and can currently be found there. The file was then exported in ascii, comma delimited text and MS-DOS text (table layout) to present on the MCM LTER web site. Both of these files are linked to this web page above. Information for the metadata was obtained from the lktemps.metadata.txt and Metaparprofile9697.rtf files. The files were called up using Microsoft Word version 6.0. Text from these files was used to create this page in html format.
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:
614-292-3229 (voice)
Email Address:
mcmlter@bprc.mps.ohio-state.edu
Publisher:
Organization:McMurdo Dry Valleys LTER
Address:
Byrd Polar Research Center ,
108 Scott Hall,
1090 Carmack Rd,
Columbus,
Columbus, OH 43210-1002 USA
Phone:
(614) 292-4697 (fax)
Methods Info:
Step 1:  
Description:
A Licor LI-193SA spherical quantum sensor and a LI-190SA flat sensor were attached to a Licor LI-1000 data logger to record instantaneous underwater PAR and ambient PAR. Data were recorded in an outside incubation hole covered by a tarp, unless otherwise noted. Once the sensor stabilized, the data were recorded.
Additional Metadata
Additional Metadata:Item 1 (View)