Spatial-temporal variation of the surface chlorophyll on seasonal timescale in the western Pacific during 1997_2010

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Hou, X.Y.^1,2 ; Dong, Q.^1 ; Xue, C.J.^1

Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, No.9 Dengzhuang South Road Haidian District, Beijing, 100094, China^1

University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China^2

关键词: Correlation coefficient;    Principal Components;    Principle component;    Sea level anomaly;    Sea surface temperature (SST);    Season-reliant empirical orthogonal functions;    Spatial-temporal evolution;    Surface chlorophyll;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012117/pdf
DOI  :  10.1088/1755-1315/17/1/012117

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Two dominant modes of the spatial-temporal evolution of the chlorophyll (CHL) over the western Pacific were revealed for the period from 1998 to 2010 using season-reliant Empirical Orthogonal Function (S-EOF) analysis method. The results showed that the first two dominant modes of CHL accounted for 43.8% of the total variance, corresponding to ENSO turnabout and post-ENSO years respectively. Besides, SEOF analysis was also applied to sea surface temperature (SST) and sea level anomaly (SLA). The seasonally evolving patterns of CHL on seasonal timescale was closely related to the patterns of SST and SLA associated with ENSO, with the consistent turning tendency of the principle component. To further distinguish the relationship between the seasonal evolution of CHL and ENSO, the lead-lag correlation coefficients were calculated between MEI and the principal components of the leading two modes of CHL. The first mode of CHL was primarily associated with the ENSO development and prediction while the second mode of CHL followed the peak of ENSO, and might be viewed as a response to ENSO.