| 利用地面水平能见度估算并分析中国地区气溶胶光学厚度长期变化特征 |
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| 引用本文： | 秦世广,石广玉,陈林,等.利用地面水平能见度估算并分析中国地区气溶胶光学厚度长期变化特征[J].大气科学,2010,34(2):449-456. |
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| 作者姓名： | 秦世广 石广玉 陈林 等 |
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| 作者单位： | 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京,100029;中国科学院研究生院,北京,100049;中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京,100029;河北省气候中心,石家庄,050021 |
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| 基金项目： | 国家重点基础研究发展规划项目2006CB403705;;国家科技支撑计划2007BAC03A01;;科技基础性工作专项2007FY110700 |
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| 摘 要： | 首先对1980年前后能见度资料非均一性进行了处理, 得到中国地区1960～2005年能见度时间序列, 并由此估算得到气溶胶光学厚度时间序列。对比已有观测及研究结果, 本文获得的气溶胶光学厚度时间序列能够较好地反映出中国地区气溶胶光学厚度长期变化特征。中国地区气溶胶光学厚度呈现逐年增加的趋势, 但1985年后增加趋势减缓, 这种变化在大城市区域表现得更为明显。中国地区气溶胶光学厚度空间分布上呈现东南部高、 西北部低的特征, 东南部地区气溶胶光学厚度普遍大于0.4, 最大值出现在四川盆地, 气溶胶光学厚度超过0.8。
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| 关 键 词： | 能见度 气溶胶 光学厚度 |
Long-Term Variation of Aerosol Optical Depth in China Based on Meteorological Horizontal Visibility Observations |
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| QIN Shiguang,SHI Guangyu,CHEN Lin and et al.Long-Term Variation of Aerosol Optical Depth in China Based on Meteorological Horizontal Visibility Observations[J].Chinese Journal of Atmospheric Sciences,2010,34(2):449-456. |
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| Authors: | QIN Shiguang SHI Guangyu CHEN Lin and |
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| Institution: | 1.State Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029; Graduate University of Chinese Academy of Sciences, Beijing, 1000492.State Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 |
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| Abstract: | After processing the visibility data inhomogeneity from inconsistent record formats before and after the year 1980,the authors obtain the long-term time series of visibility,from which the time series of atmospheric aerosol optical depth over China during 1960 to 2005 is derived.It shows well consistency with former observations and researches on long-term variation of aerosol optical depth over China.It is found that the aerosol optical depth over China showed an increasing trend but a slow upward trend af... |
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| Keywords: | visibility aerosol optical depth |
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