Ocean General Circulation Models are routinely used for operational ocean forecasting and reanalysis on global or regional scale throughout the world. Various programs like Bluelink FOAM, Mercator, TOPAZ are using various models viz., MOM, NEMO, HYCOM for operational forecast of the ocean. In the lines of international efforts of the operational ocean forecasting, INCOIS also has been carrying out of
ocused research towards developing an operational forecast system for the Indian Ocean. Regional Ocean Modeling System (ROMS) was setup and customized for the Indian Ocean domain after conducting extensive inter-comparison experiments. Initially, ocean forecasts (sea surface temperature and currents, mixed layer depth and depth of thermocline) were provided at spatial resolution of 25 km x 25 km. Due to the limitation of model, these forecasts were valid and only for the open ocean where the water depths are more than 150 m. These forecasts, however, were well received by the user community, particularly by the Indian Navy. Recently, the model was modified using improved parameterization and higher resolution (1/8 deg x 1/8 deg resolution). These improvements allowed valid forecasts for the open ocean waters beyond 75 m. Moreover, no assimilation of observed data is enabled in this model
Several operational agencies around the world provide seasonal forecasting, which requires near-real-time knowledge of the ocean state. Seasonal forecasting systems are based on coupled ocean atmosphere general circulation models that predict SST and their impact on atmospheric circulation. Many studies highlighted the importance of better oceanic initial condition, particularly the information on the ocean upper thermal structure, on the skill of climate model forecasts at the seasonal scale. The error in upper ocean thermal structure, particularly the SST, strongly influences atmospheric circulation in the coupled model.
Indian National Centre for Ocean Information Services, Hyderabad.
The high resolution forecasts of ocean parameters (waves, currents, SST, etc) near the coast and the seas around India has become necessary for safe navigation and other marine activities. To meet this requirement, ocean models with capabilities in data assimilation will be developed and set up covering smaller domains at finer resolutions.
Expertise on ocean data assimilation, which is minimal in the country, will be developed through the induction of young researchers and training them through collaborations with institutes/universities in other countries.
The forecasts of the ocean on daily basis will be done interpreting the information emerging from the high resolution models.
Daily forecasts of ocean parameters (surface and sub-surface) using high resolution ocean models with data assimilation capabilities.
High resolution SST data for the generation of PFZ advisories on cloudy days.
(Rs. In crores)
|Name of the Scheme||2012-13||2013-14||2014-15||2015-16||2016-17||Total|
|High Resolution Operational Ocean Forecast and Reanalysis system||2.00||1.00||51.00||1.00||2.00||57.00|
Last Updated On 04/09/2015 - 12:20