Study on Sea Surface Temperature and Chlorophyll-a concentration along the south-west coast of India

Bharti, Vivekanand and Jayasankar, J and Shukla, S P and George, Grinson and Ambrose, T V and Augustine, Sindhu K and Sathianandan, T V and Shafeeque, Muhammed (2020) Study on Sea Surface Temperature and Chlorophyll-a concentration along the south-west coast of India. Indian Journal of Geo-Marine Sciences, 49 (1). pp. 51-56.

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Abstract

Global climate change affects the oceanographic features and distribution of marine fishes as they are poikilothermic animals. Study of oceanographic variables in a localized region is more relevant in the context of ecological responses rather than global or continental variations. In this study, time series analysis of chlorophyll-a concentration (Chl-a) in sea water and sea surface temperature (SST) was performed separately for southern, middle and northern stratum along south-west coast of India using various statistical tools. The SST showed an increasing trend along the entire south-west coast of India after the year 1995. The northern and southern stratum of south-west coast were highly influenced by rising SST, whereas middle stratum in present scenario showed stable conditions in terms of Chl-a concentration. The study provides a baseline information about changing patterns of oceanographic features along the south-west coast of India giving a better understanding of changing global climatic conditions in coastal ecosystems.

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