Focused sun observations using a Brewer ozone spectrophotometer
Journal Article
·
· Journal of Geophysical Research; (United States)
- Swedish Meteorological and Hydrological Inst., Norrkoping (Sweden)
Direct sun measurements are the most direct and physically well defined type of measurement of total ozone with Dobson and Brewer spectrophotometers along with focused sun measurements. The direct sun and focused sun methods are influenced by many sources of error at low solar elevations. A large error arises from the addition of radiation scattered from air along the path of the solar beam. A method to correct for this error using the Brewer instrument is described. The method gives reasonably accurate values down to solar elevations of 5 deg compared to 10-20 deg without corrections. This is especially important for high-latitude stations, where the low solar elevations are a limiting factor for accurate measurements of the total ozone, particularly during the winter. 7 refs.
- OSTI ID:
- 6895854
- Journal Information:
- Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 97; ISSN 0148-0227; ISSN JGREA2
- Country of Publication:
- United States
- Language:
- English
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