| 东亚地区大气整层臭氧浓度的时空变化 |
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| 引用本文： | 谢飞钦,蔡旭晖.东亚地区大气整层臭氧浓度的时空变化[J].环境科学学报,2000,20(5):513-517. |
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| 作者姓名： | 谢飞钦 蔡旭晖 |
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| 作者单位： | 北京大学环境科学中心!环境模拟与污染控制国家重点实验室大气环境模拟室，北京100871，北京大学环境科学中心!环境模拟与污染控制国家重点实验室大气环境模拟室，北京100871 |
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| 摘 要： | 从TOMS臭氧全球网格资料截取主要包含中国大陆的东亚地区 (6 9 375°E— 1 39 375°E ;1 4 5°N— 5 4 5°N)的数据 ,分析大气整层臭氧浓度的变化特征 .结果表明 ,区域多年平均臭氧浓度约为 30 7DU(多卜森单位 :DobsonUnit) ;一年中 ,平均臭氧浓度有明显的季节变化 ,春季 (3月 )达最大值 ,秋季 (1 0月 )最小 ,变化幅度约 5 0DU .区域内臭氧浓度具有很强的空间 (纬向 )变化 ,低纬度地区臭氧浓度低 ,较高纬度地区臭氧浓度高 .各地臭氧浓度变化的概率分布基本为单峰型 ,低纬度地区分布较窄而高纬度地区宽 .从 1 978至 1 994年的十多年中 ,区域平均浓度呈明显的下降趋势 ,下降幅度约 1 0DU .对应于此 ,区域内各等级的臭氧浓度值以大致均匀的速率变化 ,低值的出现概率增加 ,而高值的出现概率减小 .
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| 关 键 词： | 臭氧浓度 东亚地区 时空变化 大气监测 |
| 收稿时间： | 1999/6/30 0:00:00 |
| 修稿时间： | 1999-06-30 |
Spatial and temporal variation of total ozone over East-Asia |
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| XIE Feiqin and CAI Xuhui.Spatial and temporal variation of total ozone over East-Asia[J].Acta Scientiae Circumstantiae,2000,20(5):513-517. |
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| Authors: | XIE Feiqin and CAI Xuhui |
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| Affiliation: | Center of Environmental Sciences, Peking University, Beijing 100871 and Center of Environmental Sciences, Peking University, Beijing 100871 |
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| Abstract: | Spatial and temporal variation of total ozone over an East\|Asia region which mainly include mainland of China was analyzed.TOMS (Total Ozone Mapping Spectrometer) data were used for this work.It showed that the average concentration over this region was approximately 307DU (Dobson Unit),while a seasonal evolution exists with a variation magnitude about 50DU.The mean concentration over this region reached its maximum at March and a minimum at October yearly.Strong latitudinal variation was shown by the distribution of ozone concentration,with lower values at lower latitudes while higher ones at higher latitudes.One\|peak probability distribution of ozone concentration was shown in this region,with narrower peak at low latitudes and broad one at higher latitudes.A mean reduction of total ozone approximating to 10DU was obvious in the period from 1978 to 1994.Correspondent to a more or less even reduction at different concentration levels,appearance probability of lower concentrations increased and probability of higher concentrations decreased in this period. |
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| Keywords: | total ozone East\|Asia variation probability |
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