文献类型：期刊文献

英文题名：Spatio-temporal distribution of chlorophyll-a concentration derived from MODIS satellite remote-sensing and in situ observations in Sanya Bay, China

作者：Shen, Chunyan[1,2,3]; Shi, Ping[1]; Zhao, Hui[2]; Zhang, Yanying[1]; Dong, Junde[1]

机构：[1] State Key Laboratory of Tropical Oceanograghy, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; [2] College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China; [3] College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

年份：2014

卷号：35

期号：11-12

起止页码：4127

外文期刊名：International Journal of Remote Sensing

收录：EI(收录号：IP53151907)、Scopus(收录号：2-s2.0-84903635463)

语种：英文

外文关键词：Chlorophyll - Radiometers - Satellite imagery

外文摘要：This study examined satellite chlorophyll-a (chl-a) concentration and in situ observations in Sanya Bay (SYB). In situ observation of chl-a was conducted four times per year at 12 sampling stations in SYB from January 2004 to October 2008. Monthly satellite chl-a was derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) during 2000-2012. This study compared satellite chl-a values to in situ measurements in SYB. The two data sets match well in the whole region except for two estuaries. Results show that the average in situ chl-a was 1.49 mg m-3 in SYB. Chl-a was relatively higher (>2 mg m-3) and more variable in coastal areas, with a tendency to decrease offshore (-3). The chl-a level in summer displayed obviously vertical stratification, with higher values at the bottom and lower values at the surface. Analysis of monthly mean chl-a showed that the highest level (>2 mg m-3) appeared in December, with the lowest in March (-3). The gradients are ranked winter, autumn, summer and spring. There was higher chl-a in autumn and winter, which may be associated with the stronger wind monsoon then. Annual mean chl-a from 2000 to 2012 varied from 1.17 to 2.05 mg m-3, with the minimum in 2001 and the maximum in 2005. The chl-a level presented a roughly increasing tendency from 2000 to 2012, which may be related to the increasing nutrients associated with the development of tourism and fishery. ? 2014 ? 2014 Taylor & Francis.