4.4 WEATHER PREDICTION - Space Applications Centre PRODUCTS / SERVICES RESEARCH AREAS · Development of INSAT Meteorological Data Processing System (IMDPS) and its operational implementation

www.isro.gov.in Indian Space Research Organisation

LAND OCEAN ATMOSPHERE ENVIRONMENT SOCIETY SPACE

Weather Prediction is the process (science, art) by which the future state of the atmosphere is determined from current weather patterns using various methods.

The problem of determining a physically consistent and accurate snapshot of the atmosphere is the central aim of the numerical weather prediction (NWP). In last few decades, with progress in both computing power and optimisation strategies, more sophisticated constraints and diverse observations have been included in NWP. The weather prediction puts a heavy demand on strong 3-dimentional database requiring a dense network of observations from ground as well as satellite platforms.

· Geophysical parameter retrieval from satellite

· INSAT Meteorological Data Processing System

· Mesoscale weather forecast using WRF model

· Nowcasting using satellite and in-situ data

· Seasonal forecast of Indian summer monsoon

· Assimilation of satellite products

· Extreme events forecast, viz. cloud-burst, storm, cyclone, etc.

· Weather prediction over SHAR for satellite launch activities

· Real-time nowcast for Uttarakhand and H.P. States

· Training/ Education/ Outreach

· Climate change studies

MAJOR HIGHLIGHTS

WEATHER PREDICTION

MAJOR BENEFITS· Global information about the

atmospheric parameters and the state of Earth's surface that can support weather forecasts

· Improved day-to-day reliability of weather prediction by providing routine observations globally

· Improving the accuracy of numerical models and under-standing of the weather processes

· Improving early warning of hazardous weather conditions leading to better protection of life and property.

INSAT-3D Megha-Tropiques

Kalpana-1

Oceansat-2

GISAT

OPERATIONAL PRODUCTS / SERVICES RESEARCH AREAS

· Development of INSAT Meteorological Data Processing System (IMDPS) and its operational implementation at IMD and SAC

· Operational weather prediction from WRF model at high spatial resolution (5 km) using satellite and in-situ observations

· Weather forecasts are provided operationally to Karnataka State Natural Disaster Monitoring Centre

· Assimilation of INSAT-3D radiances and geophysical products in NWP models operational at ISRO (SAC) and MoES (IMD & NCMRWF)

· Input to Gujarat Weather Watch Programme with NWP model and satellite inputs

· Monthly/seasonal all-India rainfall prediction using coupled climate model

· Thunderstorms forecasting using radio- sounding data over and around SHAR during satellite launch campaign

· Inter-satellite calibration of Indian geostationary satellite instruments to provide climate quality data under international GSICS programme

· Heavy rainfall alerts over Uttarakhand and Himachal Pradesh using SAC Nowcast Model (NETRA)

· Prediction of monsoon onset over Kerala using satellite data

LAND OCEAN ATMOSPHERE ENVIRONMENT SOCIETY SPACE

WEATHER PREDICTION

www.isro.gov.in Indian Space Research Organisation

Position and intensity of the rain bands captured by the INSAT Multispectral Rainfall Algorithm (IMSRA) prior and after the cloud burst at Leh.