Arctic ecosystems and global climate are closely related. This paper studies the distributions and the coupling relationship between Chlorophyll a (Chl a) and aerosol optical thickness (AOD) in Greenland Sea (10°W—10°E, 70°N—85°N) during 2003—2009 using satellite ocean colour data from MODIS Aqua. The regression analysis of EViews shows that Chl a and AOD are correlated with a time lag. Based on the lag of Chl a and AOD, co-integration inquiry finds that there is co-integration between them, which means that they will have a long-term equilibrium relationship. In general, Chl a starts from March, and gradually increases to a peak in July. The peak of AOD is usually in May, 11 weeks before Chl a. After shifting the time lag, the correlation between Chl a and AOD is 0.98 in the spring in 80°N—85°N. Apart from the year of 2005, when Chl a and AOD had no time lag, the other years’ intervals increased about 6 weeks within the 7 years. The peaks of AOD shifted one and half months ahead, while Chl a also shifted about two months ahead. In northern part (75°N—85°N), Chl a and AOD were much higher in the summer and autumn of 2009 than those in other years. The reason could be the much larger ice melting and higher AOD. The results indicate that the global warming has significant impact on the ecosystem in the Arctic Ocean.%主要利用卫星数据MODIS Aqua研究在北极格陵兰海(10°W-10°E,70°N-85°N)2003-2009年间叶绿素a(Chl a)与气溶胶厚度(AOD)的分布以及它们之间的耦合关系.研究发现,Chl a和AOD在一定的区域里有着带有滞后期的耦合关系.同时通过统计软件EVieWS的滞后回归分析发现,Chl a滞后AOD三个月,Chl a和AOD之间存在着协整关系,也就是说,他们两者之间有长期的均衡关系.总体来看,Chl a从3月份开始,逐渐升高,到7月达到顶峰.AOD春天高,夏天低.Chl a和AOD在春天有较好的耦合性,相关系数达到0.98.在80°N-85°N段,除了2005年Chl a和AOD之间没有时间间隔外,其余的年份时间峰值之间的间隔有增长的趋势,7年增长了6周.AOD的峰值从原来的5月下旬前移了一个半月左右.Chl a的峰值从原来的7月下旬前移了两个月左右.2009年夏秋,在75°N-85°N,Chl a明显高于其他年份.Chl a的明显增加与高含量的AOD及大量的冰盖融化有关.
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