Comparisons of corrected daily-integrated erythermal UVR data from the U.S. EPA/UGA network of Brewer spectroradiometers with model and TOMS-inferred data
Article
Article Title | Comparisons of corrected daily-integrated erythermal UVR data from the U.S. EPA/UGA network of Brewer spectroradiometers with model and TOMS-inferred data |
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ERA Journal ID | 1878 |
Article Category | Article |
Authors | Sabburg, Jeff (Author), Rives, J. E. (Author), Meltzer, R. S. (Author), Taylor, T. (Author), Schmalzle, G. B. (Author), Zheng, S. (Author), Huang, N. (Author), Wilson, A. (Author) and Udelhofen, P. M. (Author) |
Journal Title | Journal of Geophysical Research |
Journal Citation | 107, pp. 4676-4685 |
Number of Pages | 10 |
Year | 2002 |
Place of Publication | Washington, DC. United States |
ISSN | 0148-0227 |
2156-2202 | |
Digital Object Identifier (DOI) | https://doi.org/10.1029/2001JD001565 |
Web Address (URL) | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2001JD001565 |
Abstract | A network of 21 Brewer spectroradiometers, owned by the U.S. Environmental Protection Agency (U.S. EPA) and operated by the University of Georgia (UGA), is measuring ultraviolet (UV) spectral irradiances throughout the United States. Corrections to the raw data for 4 of the 21 Brewers have now been implemented. These corrections include (1) the 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 changes in the optical 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%. It is estimated that application of these corrections brings the uncertainty of the absolute irradiance of individual spectral scans to approximately 6% for all known major sources of error for all solar zenith angles. A comparison is presented of corrected daily integrated erythemal UV doses on clear days to both model and Total Ozone Mapping Spectrometer (TOMS) UV values. The TOMS retrievals show a positive bias with respect to the measured values that falls in the range of 12.5–1.4% with an average value of 5% for the four sites studied. |
Keywords | ultraviolet emissions; solar physics; solar irradiance |
ANZSRC Field of Research 2020 | 370199. Atmospheric sciences not elsewhere classified |
519999. Other physical sciences not elsewhere classified | |
370106. Atmospheric radiation | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre for Astronomy, Solar Radiation and Climate |
University of Georgia, United States | |
State University of New York, United States |
https://research.usq.edu.au/item/9y384/comparisons-of-corrected-daily-integrated-erythermal-uvr-data-from-the-u-s-epa-uga-network-of-brewer-spectroradiometers-with-model-and-toms-inferred-data
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