Test of an empirical method for ozone detection in the stratosphere using two filtered broadband UV-meters
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8168090
- author
- Danielsson, Hans
LU
; Ulf, Wester
and Persson, Bertil R
LU
- organization
- publishing date
- 2013
- 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}}, }