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

发布时间：2018-05-30 10:38

本文选题：气溶胶光学厚度 + 海洋初级生产力　；参考：《中国环境科学》2017年01期

【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.
[Abstract]:Based on MODIS data from 2003 to 2014 and CALIOP satellite remote sensing data from 2009 to 2014, the spatial and temporal distribution of aerosol optical depth (AOT) of 32 掳N ~ (42) N ~ (12) ~ (112) 掳E ~ (121) E) and 40 掳N ~ (50) ~ (50 掳N) ~ (150 掳E) (E ~ (180 掳) of marine primary productivity in North China are analyzed, and the correlation between them is studied. The results show that the aerosol optical thickness in North China has an annual seasonal periodicity, which reaches its peak in June and July, and the primary productivity in the Northwest Pacific Ocean also has an annual seasonal periodicity, which reaches its peak in August and September each year. From the North China region to the Northwest Pacific Ocean, the aerosol transport channels can be found in May and June, and the upper wind field is also corresponding to them, and the time-delay correlation of the long time series data is analyzed. It is found that there is a high correlation between the aerosol optical thickness in North China and the primary productivity in the Northwest Pacific Ocean, which lags behind for 1 ~ 2 months, and the correlation coefficient is between 0.7-0.8 (through the significance test of A0. 05). However, there are some sea areas with low lag time and short correlation coefficient, which may be affected by ocean current transport.
【作者单位】：中国海洋大学信息科学与工程学院海洋技术系;
【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)
【分类号】：X87;X513;X145

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