Assessing temporal variation of coloured dissolved organic matter in the coastal waters of South Eastern Arabian Sea

作     者：P Minu V P Souda S K Baliarsingh R M Dwivedi Y Ali P M Ashraf P Minu;V P Souda;S K Baliarsingh;R M Dwivedi;Y Ali;P M Ashraf

作者机构：ICAR-Central Institute of Fisheries TechnologyMatsyapuri P.O.Cochin 682029India Indian National Centre for Ocean Information Services(INCOIS)Hyderabad 500090India Department of GeologyAligarh Muslim UniversityAligarh 202001India 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2020年第39卷第1期

页      面：102-109页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：financially supported by INCOIS under SATellite Coastal Oceanographic REsearch (SATCORE) programme 

主　　题：CDOM absorption chlorophyll MODIS Arabian Sea 

摘      要：Coloured dissolved organic matter(CDOM) plays a major role in marine photochemical and biological processes and its optical properties are known to affect the underwater light penetration. This paper highlights in situ optical estimation and satellite retrieval of CDOM in deciphering its temporal variations in coastal waters of the South Eastern Arabian Sea. The study accentuated the source of CDOM as terrigenous origin during monsoon, of in situ productions during pre-monsoon and during post-monsoon of autochthonous-allocthonous origin. The matchup analysis for in situ and MODIS Aqua retrieved Adg443 exhibited bias which decreased by incorporating the seasonal component. The study also identified degrading bloom of Noctiluca scintillans as the source for exceptionally high CDOM in the area during January and February. The study demands to incorporate seasonal components and phytoplankton abundance while assessing the performance of CDOM algorithms in optically complex coastal waters.