摘要
利用 1 996至 2 0 0 1年的最新TOMS卫星观测臭氧资料 ,分析东亚地区 (69 3 75°E～ 1 3 9 3 75°E ;1 4 5°N～5 4 5°N)大气整层臭氧浓度的近年变化特征和趋势 .结果表明 ,区域近 6年平均臭氧浓度约为 3 0 6DU(多卜森单位 :DobsonUnit) ,与多年平均值 (3 0 7DU)基本持平 .区域平均臭氧浓度的季节变化和空间分布情况与以前相比无明显差异 ,但年均臭氧浓度在近 6年已停止下降趋势 ,并反弹至 1 980年代中后期的水平 。
Recent trends and characteristics of total ozone variation over East-Asia were analyzed by use of latest TOMS (Total Ozone Mapping Spectrometer) data from 1996 to 2001. Results show that regional average ozone concentration was approximately 306DU (Dobson Unit) in recent 6 years, which was close to the long-term average of 307DU. Seasonal variation and spatial distribution in this region showed no obvious difference between those in present and those in the past. The annual mean ozone concentration over thi...
出处
《环境科学》
EI
CAS
CSCD
北大核心
2002年第S1期103-105,共3页
Environmental Science
关键词
臭氧变化
新趋势
东亚地区
total ozone
new variation treads
East-Asia
