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Test of an empirical method for ozone detection in the stratosphere using two filtered broadband UV-meters

Danielsson, Hans LU ; Ulf, Wester and Persson, Bertil R LU orcid (2013) In Acta Scientiarum Lundensia 2013(003). p.1-20
Abstract
We describe a simple method to detect significant changes of the total ozone column from global (diffuse and direct) zenith sky measurements taken at the Earth’s surface. The calculation of the total ozone column relies on measured irradiance at two wavelengths in the ultra violet part of the solar spectrum. One of these (i.e. 306 nm) are appreciable absorbed by ozone whereas the other (i.e. 360 nm) is not. The method provides measurements for clear as well as for cloudy sky conditions.

The natural logarithm of the irradiance ratio at the two wavelengths, corrected for solar elevation dependence, is assumed to be proportional to the amount of ozone in the atmospheric column. It is assumed that the two wavelengths have same... (More)
We describe a simple method to detect significant changes of the total ozone column from global (diffuse and direct) zenith sky measurements taken at the Earth’s surface. The calculation of the total ozone column relies on measured irradiance at two wavelengths in the ultra violet part of the solar spectrum. One of these (i.e. 306 nm) are appreciable absorbed by ozone whereas the other (i.e. 360 nm) is not. The method provides measurements for clear as well as for cloudy sky conditions.

The natural logarithm of the irradiance ratio at the two wavelengths, corrected for solar elevation dependence, is assumed to be proportional to the amount of ozone in the atmospheric column. It is assumed that the two wavelengths have same properties in the atmosphere excluding the impact of ozone. Therefore variations in atmospheric conditions should cancel out in the ratio. We found a strong correlation between our calculated quantity and ozone measurements at The Danish Meteorological Institute, DMI, Copenhagen, Denmark, which is approximately 30 km away from the measuring site. The correlation coefficient, R, from linear regression had the value 0.90, and the standard deviation, Sres, for the residuals were 10.6 DU (Dobson Units), and the mean value was 322 DU, obtained from every day point measurements during the Swedish summer, total 67 days. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ozone, ozone measurements, ozone detection, UV, ultraviolet radiation, UV-measurements, solar UV
in
Acta Scientiarum Lundensia
volume
2013
issue
003
pages
1 - 20
publisher
Bertil RR Persson, Medical Radiation Physics, 22185 Lund, Sweden
ISSN
1651-5013
language
English
LU publication?
yes
id
11fe31f5-5005-4279-bff3-15b49cf2bf92 (old id 8168090)
date added to LUP
2016-04-01 13:43:44
date last changed
2018-11-21 20:19:17
@article{11fe31f5-5005-4279-bff3-15b49cf2bf92,
  abstract     = {{We describe a simple method to detect significant changes of the total ozone column from global (diffuse and direct) zenith sky measurements taken at the Earth’s surface. The calculation of the total ozone column relies on measured irradiance at two wavelengths in the ultra violet part of the solar spectrum. One of these (i.e. 306 nm) are appreciable absorbed by ozone whereas the other (i.e. 360 nm) is not. The method provides measurements for clear as well as for cloudy sky conditions.<br/><br>
The natural logarithm of the irradiance ratio at the two wavelengths, corrected for solar elevation dependence, is assumed to be proportional to the amount of ozone in the atmospheric column. It is assumed that the two wavelengths have same properties in the atmosphere excluding the impact of ozone. Therefore variations in atmospheric conditions should cancel out in the ratio. We found a strong correlation between our calculated quantity and ozone measurements at The Danish Meteorological Institute, DMI, Copenhagen, Denmark, which is approximately 30 km away from the measuring site. The correlation coefficient, R, from linear regression had the value 0.90, and the standard deviation, Sres, for the residuals were 10.6 DU (Dobson Units), and the mean value was 322 DU, obtained from every day point measurements during the Swedish summer, total 67 days.}},
  author       = {{Danielsson, Hans and Ulf, Wester and Persson, Bertil R}},
  issn         = {{1651-5013}},
  keywords     = {{ozone; ozone measurements; ozone detection; UV; ultraviolet radiation; UV-measurements; solar UV}},
  language     = {{eng}},
  number       = {{003}},
  pages        = {{1--20}},
  publisher    = {{Bertil RR Persson, Medical Radiation Physics, 22185 Lund, Sweden}},
  series       = {{Acta Scientiarum Lundensia}},
  title        = {{Test of an empirical method for ozone detection in the stratosphere using two filtered broadband UV-meters}},
  url          = {{https://lup.lub.lu.se/search/files/3554936/8168248.pdf}},
  volume       = {{2013}},
  year         = {{2013}},
}