Ocean Services

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i) Potential Fishing Zones (PFZ) Advisories: A unique system of Fishery Advisories based on identification of potential fishing zones (PFZ) using remote sensing technology has been made operational. The PFZ advisories prepared in local languages and local measurement units are disseminated to over 225 nodes, thrice a week through innovative and novel initiatives such as Electronic Display Boards and Information Kiosks at the fishing harbors, radio, print media, emails and web sites supplementing fax and telephone and mobile. 97 electronic display boards were installed in selected coastal areas for the dissemination of information on PFZ and Ocean State Forecast. The electronic display board (EDB) communicates with the server in INCOIS and automatically obtains the necessary information (PFZ advisories and ocean state forecast) relevant to the location where it is installed.

In addition to PFZ maps, in November 2010 INCOIS also operationalised advisories on Tuna species based on satellite derived SST, Chlorophyll, water clarity and model based mixed layer depth.

ii) Ocean State Forecasting: In January 2009, Indian Ocean Forecasting System (INDOFOS) was launched integrating existing forecasts of ocean wave and the surface and subsurface parameters of the Indian Ocean. The system, at present, provides forecast on wave heights, wave direction, sea surface temperature (SST), surface currents, mixed layer depth (MLD) and depth of 20oC isotherm up to 5-7 days in advance. This system is operational since January 2010. The beneficiaries of INDOFOS are: traditional and mechanized fishermen, the maritime boards, Indian Navy, Coast Guard, shipping companies and oil and natural gas industries, energy industries and academia.

Currently, the wave forecasts are provided on a spatial resolution of 25x25 km grids and the other parameters (SST, MLD, etc.) on 1/8°x1/8° grid (ie. ~ 13 km resolution). In addition to providing the forecasts on aforementioned parameters, INCOIS has also set up operational tidal predictions (tidal elevation) at 137 major and minor ports along the Indian region during XI plan. Another useful service, named ‘high wave alert’ started during the XI plan is found to be highly useful for the coastal community

The achievements of PFZ and Ocean State Forecast programmes are highlighted in the recent study of National Centre for Economics and Applied Research revealed that ~90% fishermen in Tamil Nadu and 64% fishermen in the eastern states, Andhra Pradesh and Orissa, are aware of and are utilizing these advisories together with the ocean state information generated and provided by INCOIS. The study further stated that the total annual net economic benefit due to the scientific identification of PFZs based on satellite information is estimated to lie in the range of Rs. 34,000 to 50,000 crores.

iii) Coral reef maps: Coastal reef maps have been prepared for all coral reef regions. Considering thermal stress as an indicator, coral health bulletins are issued bi-weekly indicating the hot spot composites (early signs of bleaching), and degree of heating weeks (DHWs) as an indicator to intensity of bleaching. Time series of satellite observations also is provided. Currently, this service covers the coral environs of Gulf of Kutch, Gulf of Mannar, Lakshadweep, and Andaman and Nicobar Islands.

iv) Ocean Data Management and Dissemination: All data relating to ocean science are being archived at INCOIS which includes voluminous and heterogeneous data sets from the in-situ and remote sensing ocean observing systems, in real time. This centre has been designated as the National Oceanographic Data Centre (NODC) by the International Oceanographic Data and Information Exchange (IODE) Programme of Intergovernmental Oceanographic Commission (IOC). The Ocean Data and Information System (ODIS) is one such system that provides data and information on physical, chemical and biological parameters of oceans on various spatial and temporal domains. It is an end-to-end ocean data management system, developed by adopting the advances in the field of information and communication technology. Currently, the INCOIS archive contains more than 140000 salinity and temperature profiles. The data sets available includes data from Argo floats, moored buoys, drifting buoys, XBTs, current meters, buoys, tide gauges, bottom pressure recorders, coastal radars, wave rider buoys, autonomous weather stations, etc. The databank holds ~17,00,000 records. The remote sensing data include NOAA AVHRR, MODIS (Terra and Aqua), Oceansat-1, altimeter, TMI, Quikscat, SeaWifs, etc. In addition to the data received in real-time from various ocean observing systems, the data centre also downloads and archives the data from model outputs, reanalysis data sets and the satellite data products for the Indian Ocean region. The satellite data is of the order of ~ 5 TB. The Live Access Server (LAS) installed at INCOIS is widely used by the oceanographic community for data selection, visualization and the generation of on-the-fly graphics.

Last Updated On 05/14/2014 - 16:53
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