京都大学 · 地球惑星科学
本研究室では、気象衛星データを活用した大気汚染物質の空間的・時間的動態の解明を主眼としています。特に、北半球の寒冷林地域における森林火災が大気中のオゾン前駆物質に与える影響を、衛星観測と地上測定の統合的解析によって研究しています。春から夏にかけての光化学スモッグの発生機構や、乾燥年における火災発生メカニズムの解明にも注力しています。
Figures are computed from collected data and may differ slightly.
The NOAA 12 advanced very high resolution radiometer detected extensive forest fires in boreal Siberia and northern Mongolia during April through October 1998, a year of extremely dry weather, in particular, in the Russian Far East. Analysis of the satellite data has been carried out to estimate the area burned and gaseous emissions to the atmosphere from the point of view of ozone precursors. The fires started in western and eastern Siberia and moved eastward during the summer, until they were
Ground based measurements of ozone as well as carbon monoxide have been carried out at Happo station. Annual cycles of ozone and CO concentration were obtained. Monthly means of ozone show maximum of ca. 65 ppbv in April or May and minimum of ca. 45 ppbv in December or January. The annual behaviour of CO is somewhat similar to that of ozone showing maximum of 225 ppbv in April and minimum of 151 ppbv in December. A positive correlation was obtained between ozone and CO during spring and summer.
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