JECET; March 2015-May 2015; Sec. B; Vol.4.No.2, 000-000. E-ISSN: 2278–179X Journal of Environmental Science, Computer Science and Engineering & Technology An International Peer Review E-3 Journal of Sciences and Technology Available online at www.jecet.org Section A: Environmental Science Research Article Diluted proxies of climate change in the inshore estuarine complex of Bay of Bengal: A case of overlapping noise and facts Tanmay Ray Chaudhuri 1 , Kakoli Banerjee 2* , Sufia Zaman 1 , Shankhadeep Chakraborty 1 , Tanmoy Rudra 3 , Arnesha Guha 3 , Durgapada Karmakar 3 , Prosenjit Pramanick 1 , Pardis Fazli 4 , and Abhijit Mitra 5 1 Department of Oceanography, Techno India University, Salt Lake Campus, Kolkata-700091, India 2 School of Biodiversity & Conservation of Natural Resources, Central University of Orissa, Landiguda, Koraput, Orissa 764 021 3 Scientific and Environmental Research Institute, 42 Station Road, Rahara, Kolkata 700118, India 4 Department of Biological and Agricultural Engineering, University Putra, Selangor, Malaysia 5 Department of Marine Science, University of Calcutta, 35 B.C. Road, Kolkata-700019, India Received: 8 May 2015; Revised: 27 May 2015; Accepted: 00 May 2015 Abstract: We review current understanding of the primary proxies of climate change (viz. surface water temperature, salinity and pH) in the two major estuaries (Hooghly and Matla) in the inshore region of the Bay of Bengal. In both the estuaries, rise in surface water temperature and lowering of pH are observed, but surface water salinity oscillation exhibits contradictory pictures with freshening in the Hooghly estuary (in the western sector of the lower Gangetic delta) and salinification in the Matla estuary (located in the central sector of the study area). This first order analysis concludes that the Hooghly estuarine system has more noise in terms of anthropogenic pressure (due to its location adjacent to highly urbanized and industrialized city of Kolkata) compared to the Matla JECET; March 2015-May 2015; Sec. B; Vol.4.No.2, 000-000 1