Asia-Pacific Journal of Atmospheric Sciences

Korean Meteorological Society (한국기상학회)
권호 표지

Recent EUV-B Observation at KGAWO : A Summary Report

지구대기감시관측소에서의 최근 EUV-B 관측 결과

Song, Byung-Hyun;Hong, Gi-Man;Choi, Byoung-Chol;Cho, Hi-Ku
송병현;홍기만;최병철;조희구

  • Published : 2005.06.30
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Abstract

Erythemally Weighted Untraviolet B (EUV-B) irradiance data measured every 10 minutes from 1999 to 2004 with UV-Biometer(Solar Light Model 501) at Korea Global Atmosphere Watch Observatory (KGAWO) was analysed and discussed. So the EUV-B intensity is mainly depends on solar zenith angle and total ozone amounts on clear day condition, the daily maximum occurs near solar noon time and the highest monthly accumulated EUV-B shows in July at KGAWO. The maximum daily variation occurs in July due to precipitation and clouds. 6-year trend of EUV-B shows slightly in decreasing. About above 50% of days on summer noontime EUV-B the UV index marked higher than category high or extremely high. We analyzed the relationship of EUV-B and total ozone observed in Seoul. Coincident relationship between ozone depletion and EUV-B increase could not be found with these data sets. Another EUV-B data measured in Pohang was analysed in order to comparison with the KGAOW data. There was no significant difference between two data set of clear day.

Keywords

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