Comparisons of corrected daily integrated erythemal UVR from the U.S. EPA/UGA network of Brewer spectroradiometers with model and satellite data

Sabburg, Jeff and Kimlin, Michael G. and Rives, John E. and Meltzer, Richard S. and Taylor, Thomas E. and Schmalzle, Gina and Zheng, Sherry and Huang, Nancy and Wilson, Andrew R. and Udelhofen, Petra M. (2002) Comparisons of corrected daily integrated erythemal UVR from the U.S. EPA/UGA network of Brewer spectroradiometers with model and satellite data. In: Ultraviolet Ground and Space-based Measurements, Models, and Effects, 30 Jul-1 Aug 2001, San Diego, CA. United States.

Abstract

A network of 21 Brewer spectroradiometers, owned by the U.S. Environmental Protection Agency and operated by the University of Georgia, is measuring UV spectral irradiances throughout the United States. Corrections to the raw data have now been implemented. These corrections include (1) stray light rejection, (2) the cosine errors associated with the full sky diffuser, (3) the temperature dependence of the response of the instruments and (4) the temporal variation in the instrument response due to optical changes in the characteristics of the instruments. While for many sites the total corrections amount to less than 10%, for certain sites they are much larger, in some cases amounting to more than 25%. Application of these corrections brings the errors of the absolute irradiance values to approximately ± 5 to 7% for all sources of error. Comparisons of corrected daily integrated erythemal UVR data (DUV) to model and TOMS-inferred values are performed for sites at Acadia National Park, Bigbend National Park, Everglades National Park and the Virgin Islands. All sites show very good agreement with the TUVSPEC model but comparison with TOMS-inferred DUV values indicate a 10-20% overestimate by TOMS for the four sites.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2002 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. Held USQ Library 535.014 ULT
Faculty / Department / School: Historic - Faculty of Sciences - No Department
Date Deposited: 30 Nov 2007 11:55
Last Modified: 06 Nov 2013 07:09
Uncontrolled Keywords: measurement; radiation; ultraviolet
Fields of Research : 04 Earth Sciences > 0401 Atmospheric Sciences > 040102 Atmospheric Dynamics
02 Physical Sciences > 0205 Optical Physics > 020503 Nonlinear Optics and Spectroscopy
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
Socio-Economic Objective: D Environment > 96 Environment > 9602 Atmosphere and Weather > 960202 Atmospheric Processes and Dynamics
Identification Number or DOI: 10.1117/12.452955
URI: http://eprints.usq.edu.au/id/eprint/12561

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