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NIO signed an MoU with FSI to collect surface water samples from ships of opportunity
In 2009, NIO participated in a national programme "
Isotope Fingerprinting of Waters of India (IWIN)
". The specific objectives of this programme include: (i) identifying dominant sources of water vapour supply (Arabian Sea, Bay of Bengal, local and long distant continental sources) at different locations within the country during different seasons; (ii) quantifying the partitioning of vapours into rain and re-partitioning of rain into various components as evapotranspiration, soil moisture, stream flow and groundwater; (iii) quantification of the extent and rates of interactions between these components, and (iv) the controls that geographical and climatic factors exercise over the entire hydrological cycle both temporally and spatially.
In addition to estimate moisture trapped over the designated land segments over the Indian Peninsular, NIO was also identified to organise ships of opportunities to collect surface water samples from Arabian Sea to cover all the four seasons. In this context Fisheries Survey of India (FSI) has come forward to participate in this national program by offering to collect water samples from Arabian Sea using the fleet of ships under their command. Further discussions between the Director General, FSI and Director, NIO culminated in formulating a Memorandum of Understanding which was signed by the two parties on 4th October 2010 in a formal function organised at NIO. Dr. P.M.Muraleedharan, Project Leader at NIO and Dr. M.E.John, zonal director of Fisheries Survey of India, Goa were also present.
FSI has three field stations at the west coast with six vessels in their command. Continuous surface water sample collection using all the six vessels over a period of time will provide evenly distributed samples in space and time to cover all the seasons. Isotope fractionation data derived from these samples are extremely useful to understand the fate of escaped moisture from this part of the ocean and its role on the ensuing hydrological cycle. National Institute of Oceanography is also engaged in research activities to understand the hydrological budge of the Indian peninsular. The information gathered from IWIN will be useful to support the activities at NIO. FSI is looking forward to use this collaboration for a better interaction with the scientists of NIO to understand the ocean-atmosphere processes.
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