Ministry of Earth Sciences commissions Higher Resolution Weather Prediction Model

Posted on:18 Jan 2017 18:07:05
Ministry of Earth Sciences commissions Higher Resolution Weather Prediction Model
18 January 2017 Current Affairs: The Union Ministry of Earth Sciences (MoES) has commissioned a very high resolution (12 km) global deterministic weather prediction model for generating operational weather forecasts. 

The model has been on trial since September 2016. It has shown significant improvements in skill of daily weather forecasts. It was made operational from January 2017.

This model replaces the earlier version which had a horizontal resolution of 25 km which was very helpful, in predicting track and intensity of recent Cyclonic Storm Vardah and cold wave over northern India. MoES’s operational Ensemble Prediction System (EPS) was upgraded to 12 km. 

For this, High Performance Computing (HPC) system resources were augmented to 10 Peta Flops (PFs) from current 1.2 PFs. 

The EPS was adopted to overcome problem of uncertainties in the forecasts. It involves the generation of multiple forecasts using slightly varying initial conditions. 

The EPS also help generate probabilistic forecasts and quantify the uncertainties. The latest model replaces the earlier version that had a horizontal resolution of 25 km.

MoES provides climate, weather and hydrological services to various users round the year and 24/7. Both operational and research aspects for these services are implemented through India Meteorological Department (IMD), Indian Institute of Tropical Meteorology (IITM), National Centre for Medium Range Weather Forecasting (NCMRWF), and Indian National Centre for Ocean Information System (INCOIS).

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