基于MODIS和CALIOP卫星遥感数据的气溶胶光学厚度与海洋初级生产力相关性  

Correlation between aerosol optical depth and ocean primary productivity based on MODIS and CALIOP data

作　　者：李一凡[1] 陈文忠[1] LI Yi-fan;CHEN Wen-zhong(Department of Marine Technology, College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国海洋大学信息科学与工程学院海洋技术系,山东青岛266100

出　　处：《中国环境科学》2017年第1期76-86,共11页China Environmental Science

基　　金：基金项目:利用多卫星传感器资料研究大气气溶胶对海洋初级生产力的影响机制(41375142)

摘　　要：利用2003~2014年的MODIS和2009~2014年的CALIOP卫星遥感数据产品,分析了我国华北地区(32°N^42°N,112°E^121°E)气溶胶光学厚度和西北太平洋部分海域(40°N^50°N,150°E^180°E)海洋初级生产力的时空分布,并研究了二者之间的相关性.结果表明:我国华北地区气溶胶光学厚度具有年季周期性,在每年的6、7月达到峰值;西北太平洋初级生产力同样具有年季周期性,在每年的8、9月达到峰值;从华北地区到西北太平洋,在5、6月可以发现比较明显的气溶胶传输通道,高空风场也与之对应;通过对长时间序列数据进行时滞相关性分析,发现华北地区气溶胶光学厚度与滞后其1~2个月的西北太平洋初级生产力有较高相关性,相关系数在0.7-0.8(通过a=0.05的显著性检验)之间.但其中存在滞后时间短相关系数低的海域,可能是受到洋流输送的影响.Spatial and temporal distributions of aerosol optical depth(AOD)in Huabei area of China(32°N^42°N,112°E^121°E)and the ocean primary productivity in Northwestern Pacific Ocean(40°N^50°N,140°E^180°E)wereanalyzed using satellite remote sensing data from MODIS(2003~2014)and CALIOP(2009~2014).And the correlationsbetween these two parameters were further studied.The results showed that:the AOD in Huabei area varied seasonallyand peaked in June and July.The ocean primary productivity in Northwestern Pacific Ocean also showed seasonalperiodicity and was highest in August and September.An aerosol transportation channel from Huabei area to theNorthwestern Pacific Ocean was revealed in May and June,along with the high-altitude wind fields.Indicated byLead-lag correlation analysis of long time-series data,relatively higher correlation coefficient(ranging from0.7to0.8,tested by a=0.05)was found between AOD in Huabei area and ocean primary productivity in Northwestern PacificOcean which lagged behind the former for1to2months.Nevertheless,areas with shorter lag time and lower correlationindex might be affected by ocean current transportation.

关 键 词：气溶胶光学厚度 海洋初级生产力 MODIS CALIOP 相关性分析 

分 类 号：X87[环境科学与工程—环境工程]