郭阳洁, 洪松, 庄艳华, 冯楠. 湖北省气溶胶光学厚度时空分布特征研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(11): 1381-1385.
引用本文: 郭阳洁, 洪松, 庄艳华, 冯楠. 湖北省气溶胶光学厚度时空分布特征研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(11): 1381-1385.
GUO Yangjie, HONG Song, ZHUANG Yanhua, FENG Nan. Temporal Variation and Spatial Distribution of Atmospheric Aerosols over Hubei Province[J]. Geomatics and Information Science of Wuhan University, 2010, 35(11): 1381-1385.
Citation: GUO Yangjie, HONG Song, ZHUANG Yanhua, FENG Nan. Temporal Variation and Spatial Distribution of Atmospheric Aerosols over Hubei Province[J]. Geomatics and Information Science of Wuhan University, 2010, 35(11): 1381-1385.

湖北省气溶胶光学厚度时空分布特征研究

Temporal Variation and Spatial Distribution of Atmospheric Aerosols over Hubei Province

  • 摘要: 利用MODIS遥感数据反演湖北省2003~2008年气溶胶光学厚度(AOD)数据,研究了AOD平均值的空间分布与时间变化特征;利用自组织映射(SOM)模型与线性模型,分析了湖北省AOD与人口密度、人均工业产值、森林覆盖率之间的关系。结果表明,在空间分布上,AOD高值区主要位于地势较低、人口密度较大、人均工业产值较高、森林覆盖率较低的湖北中南部;AOD次高值、低值区位于地势较高、人口密度较小、人均工业产值较低、森林覆盖率较高的湖北西部、东北部和东南部,对高值区呈环绕之势。在时间变化上,AOD年均值呈逐年增加的趋势;四季均值及细粒比分布存在明显差异;月平均值在冬春、春夏之交分别呈上升与下降趋势。在AOD时空分布的影响因素上,SOM模型与线性模型分析结论一致,AOD分布与人口密度、人均工业产值呈正相关,与森林覆盖率呈负相关。

     

    Abstract: Using MODIS-derived aerosol data,temporal variation and spatial distribution of aerosol optical depth(AOD) during 2003-2008 over Hubei province was investigated based on GIS.SOM(self-organizing maps) and linear models were used to analyze the relationships between AOD and population density,per capita gross industrial output value,forest coverage.The results were as follows: high AOD values were observed in central south areas with lower elevation,larger population density,higher per capita gross industrial output value,lower forest coverage,while low values,in western,northeast and southeast,were contrary.Distribution of seasonal average AOD and η(fine-mode fraction) vary from each other.Monthly average AOD rises substantially in winter-spring season and drops sharply in spring-winter season.Two models were both showing that AOD distribution is positively related with population density,per capita gross industrial output value,and negatively with forest coverage.

     

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