Abstract
Colored Dissolved Organic Matter (CDOM) is a fraction of dissolved organic matter (DOM) that interacts with light and can be detected by satellite ocean color remote sensing. In the estuarine and coastal region, CDOM studies are helpful in the carbon cycle modeling. The Indian summer monsoon causes heavy discharges, enriched in CDOM transporting to the western Bay of Bengal, and the estuaries act as conduits. CDOM-related studies are relatively few in estuaries of the Bay of Bengal. Limited findings suggest a dual behavior, conservative in the 15–31 × 10−3 salinity range (October/November to April) during non-lean/lean discharge period and nonconservative behavior outside of this salinity range during monsoon season. Studies integrating the river, estuary, and coastal regions, over temporal cycles, are still lacking. A summary of the present status is expected to be helpful to pin the areas on which to concentrate and as a reference for future studies as we witness changes in the river discharge due to either dam construction or climate change–related perturbations affecting the export of terrigenous DOM, its dynamics, and nutrients that fertilize the sea.
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Acknowledgments
Authors thank the Directors of Indian National Centre for Ocean Information Services (INCOIS) and National Centre for Polar and Ocean Research (NCPOR) for their encouragement, the National Institute of Ocean Technology (NIOT) (MoES) for the ship facility, and the crew for onboard cooperation. The INCOIS provided project grant (to NSS, F&A:XII:D2:023), DST-SERB Fast Track Young Scientist (to NVHKC, SR/FTP/ES-56/2013), and Human Resource Development Group Council of Scientific and Industrial Research (CSIR-HRDG) Research Associateship (to SRP, 09/002 (510)/2016 EMR-I). NSS thanks Andhra University for awarding Honorary Professor. SD thanks Global Challenges Research Fund (GCRF)-Living Delta Research Hub for providing him the Postdoctoral Research Associateship. This is NCPOR contribution number B-11/2020-21.
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Pandi, S.R., Chari, N.V.H.K., Sarma, N.S., Tripathy, S.C., Chiranjeevulu, G., Das, S. (2021). A Review of Estuarine CDOM Dynamics of East Coast of India Influenced by Hydrographical Forcing. In: Das, S., Ghosh, T. (eds) Estuarine Biogeochemical Dynamics of the East Coast of India. Springer, Cham. https://doi.org/10.1007/978-3-030-68980-3_14
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