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Long-term erythemal UV at Abisko and Helsinki estimated using total ozone, sunshine duration, and snow depth
Responsible organisation
2006 (English)In: Remote Sensing of Clouds and the Atmosphere XI, SPIE-INT SOC OPTICAL ENGINEERING , 2006, Vol. 6362Conference paper (Refereed)
Abstract [en]

A method for estimating past UV radiation levels using measurements of total ozone, sunshine duration and snow depth was applied to Abisko, northern Sweden, and Helsinki, southern Finland. The method has earlier been applied to Sodankyla (Finland) and Davos (Switzerland). The performance of the method was, as in earlier studies, found to be satisfactory with, for instance, a seasonal correlation coefficient as compared to measurements of the order of 95%. By extending the available ozone time series into the past using climatological values of the total ozone column, we were able to make UV estimates all the way back to the early 20th century at both stations. Both at Abisko and Helsinki, the produced time series of estimated daily erythemal UV doses shows increases over the last few decades partly due to the diminution of the total ozone column, and partly due to variations in the sunshine duration. Over the period 1950-1999, a statistically significant increasing trend of 2.2%/decade was found for Abisko, whereas for Helsinki, a trend of 4.2%/decade (also statistically significant) was found for the period 1979-1999.

Place, publisher, year, edition, pages
SPIE-INT SOC OPTICAL ENGINEERING , 2006. Vol. 6362
Series
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
Keyword [en]
ultraviolet radiation; ozone.; sunshine duration; climate; long-term; clouds
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3691DOI: 10.1117/12.689742OAI: oai:DiVA.org:polar-3691DiVA: diva2:1104498
Conference
Conference on Remote Sensing of Clouds and the Atmosphere XI, Stockholm, SWEDEN, SEP 11-14, 2006
Available from: 2017-06-01 Created: 2017-06-01 Last updated: 2017-06-01

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf