孟加拉湾的叶绿素a,海表温度和风速的趋势（英文）  

The propensity of chlorophyll-a,sea surface temperature and wind speed in the Bay of Bengal

作　　者：Danushka FERNANDO 唐丹玲[1,2] 徐华兵 Danushka FERNANDO;TANG Danling;XU Huabing(Guangdong Key Laboratory of Ocean Remote Sensing,State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]中国科学院南海海洋研究所热带海洋环境国家重点实验室/广东海洋遥感重点实验室,广州510301 [2]中国科学院大学,北京100049

出　　处：《南京信息工程大学学报（自然科学版）》2018年第3期334-341,共8页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：funded by Key Project of the National Natural Sciences Foundation of China (NSFC41430968)~~

摘　　要：孟加拉湾(BoB)是一个高能量活跃的地区,其短期内的动态变化将对浮游环境产生巨大影响."风泵"能够在BoB海域导致垂直的混合从而影响海表温度和叶绿素浓度.本文对2006——2016年的月平均Aqua-MODIS叶绿素a(chl-a)浓度数据和Sea WiFS月度气候态数据进行了分析,研究了叶绿素浓度的时间/季节变化和温度以及风速的关系.基于季风期间的chl-a变异与海表温度(SST),评估了在BoB海域它们之间的关系和变化.chl-a浓度值的趋势分析表明,该区域的垂直混合非常低,冬季最高,夏季最低.冬季最大chl-a浓度值为0.50 mg/m^3,并且从2月开始下降到夏季季风期间.与冬季季风相比,夏季季风期间叶绿素表现出较低的浓度.在夏季季风期间,特别是在7月和8月,由于云层密集,卫星传感器无法准确捕获chl-a浓度值.chla浓度和SST之间相关系数R^2值为0.218 1.The Bay of Bengal(BoB)is a high energy active region,dynamics of BoB varies during short term with huge effect over the planktonic environment.“Wind pump”induces vertical mixing in the BoB region,which affects the sea surface temperature(SST)and chlorophyll-a(chl-a).This study demonstrates the temporal/seasonal variation of chl-a concentration and its relationship to SST and wind speed.Monthly averaged Aqua-MODIS chl-a data for a period of 10 years(2006-2016)and Sea WiFS monthly climatology data were analyzed.Based on monsoonal chl-a and SST variability,we appraised their relationship and variations over the BoB.Trend analysis of chl-a concentration values shows that vertical mixing is very low in this region with weak annual phase,which reaches its maximum in winter and minimum in summer.About 0.50 mg/m 3 is observed during winter as the maximum chl-a concentration value and then decreases since February until summer monsoon period.Summer monsoon period is identified as lack of chl-a concentration,compared to winter monsoon period.In summer monsoon period,especially in July and August,satellite sensors couldn t capture chl-a concentration values accurately due to the dense cloud cover.The R 2 value for relationship between chl-a concentration and SST is observed to be 0.218 1.

关 键 词：叶绿素 风泵 孟加拉湾 海表温度 上升流 

分 类 号：P724[天文地球—海洋科学] P71