ESSO - Indian National Centre for Ocean Information Services

(An Autonomous Body under the Ministry of Earth Sciences, Govt. of India)
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Water Quality Nowcast System


The human impacts on the coastal ocean in terms of pollution and waste disposals have greatly modified the water quality and the fluxes of material to the coastal waters. Natural processes of monsoonal winds, river water fluxes, and ocean circulation often make anthropogenic perturbations more complex to study. "Coastal Monitoring" program of INCOIS envisages monitoring time-series of various biogeochemical parameters to assess the biogeochemical variability in the Indian coastal waters and understand the ecosystem trophic status. Under this program, INCOIS has established two time-series stations in the Indian coastal waters (east coast: Visakhapatnam, west coast: Kochi) through sustained buoy-based automated observatories. The establishment of more time-series stations is planned at strategic locations of the Indian coast. The INCOIS "Eyes on the Indian Coastal Milieu" service disseminates high-frequency data on several physical-chemical-biological parameters. The data recorded by the observatories is aimed at monitoring water quality parameters, developing an understanding of coastal processes, assessing the health of the coastal waters, model validation, assimilation, and forecasting of water quality parameters. The target users are fishery resource managers, tourists, ecologists, fishermen, researchers, and environmentalists. The data recorded by the coastal observatories are well-validated with in situ laboratory analysis at regular intervals.

Water Quality Status

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Real-Time Feed

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Derived Parameters

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Satellite Retrieved Parameters

Parameters Association Parameters Association
Water Current Water mass movement Water Temperature Upwelling/Mixing
Salinity Freshwater/River influx, Terrigenous discharge, Upwelling pH Acidity or basicity of water
Dissolved Oxygen Availability of Oxygen in the water, Aquatic organism's health Chlorophyll-a Phytoplankton biomass, Primary production, Phytoplankton bloom
Turbidity Water column transparency, Sediment discharge, Sediment resuspension Coloured dissolved organic matter Organic matter pollution
Dissolved methane Methane cycling, Ggreenhouse gas with global warming potential Hydrocarbons Oil Spill, Oil Pollution
Inorganic macronutrients (nitrite, nitrate, ammonium, phosphate, silicate) Primary production, Algal bloom, Eutrophication, Partial pressure of CO2 (water & Air) CO2ingassing-outgassing, Carbonate chemistry
Pigments (Phycocyanin, Phycoerythrin) Cyanobacteria bloom