MODIS气溶胶产品在农业区的适用性及特征分析  

Analysis of Applicability and Characteristics of MODIS Aerosol Products in Agricultural Regions

作　　者：王研峰[1] 张文煜[1] 孔令彬[1] 王聚杰[1] 

机构地区：[1]兰州大学大气科学学院,甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730000

出　　处：《遥感技术与应用》2013年第3期505-510,共6页Remote Sensing Technology and Application

基　　金：国家"973"计划项目(2012CB956200);国家自然科学基金项目(41225018)共同资助

摘　　要：利用太阳光度计地面观测数据对C005AOD产品在中国不同气候农业区的适用性及各个气候农业区AOD特征进行了分析,结果表明:①不同气候农业区C005AOD产品适用性达到了NASA所期望的精度要求,与C004AOD产品适用性相比,C005AOD产品适用性在亚热带季风气候农业区未有改善,在温带季风气候农业区有一定改善,在温带大陆性气候和高原气候农业区有较大改善,同时,在植被密集及农作物生长旺盛的7月份各气候农业区C005AOD反演误差较小;与地面观测相比,较多的C005AOD反演值在高原气候和温带大陆性气候农业区偏大,在亚热带季风气候和温带季风气候农业区偏小。②高原气候农业区AOD变化平稳,温带大陆性气候、温带季风气候及亚热带季风气候农业区AOD呈现出随时间变化波动较大的特征,且温带大陆性气候农业区AOD呈现微弱减少趋势,其他3个气候农业区AOD呈现出微弱增长趋势。Based on the ground observation data measured by sun-photometer,the applicability of C005 AOD products and the AOD＇s character in China＇s different climatic agricultural regions are evaluated and analyzed,the results show that： （1） The applicability of C005 AOD products in different climatic agricultural regions reach the desirable precision of NASA. Compared with the applicability of C004 AOD products, C005 AOD products can not improve the applicability in subtropical monsoon climatic agricultural region; Some improvements are gained in the temperate monsoon climatic agricultural region;the greater progress is proved in the temperate continental climatic and plateau climatic agricultural regions. C005 AOD prod- ucts can get quite accurate inversion in July with dense vegetation. Compared with ground observation da- ta, there are small positive differences of the inversion values in plateau and temperate continental climatic agricultural regions,however, small negative differences exists in subtropical monsoon and temperate mon soon climatic agricultural regions. （2） The changes of AOD in plateau climatic agricultural region are smooth,other regions show a significant variability with temporal change. What＇s more, the AOD in tem perate continental climatic agricultural region presents a minimal diminished trend,but a minimal increased trend in other three regions

关 键 词：气候农业区 COOS气溶胶产品 适用性 AOD 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]