NWP Modelling systems at NCMRWF

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NWP Modelling systems at NCMRWF V.S. Prasad vsprasad@ncmrwf.gov.in

Robust Satellite Data Handling system Meghatropiques Circular orbiting Apart from developments in model and assimilation systems; the augmentation of data handling system in recent times helped NCMRWF to increase reliability of its forecasts Oceansat -2 Polar orbiting INSAT- 3D Geostationary

Volume of data reception (Gb/day) at NCMRWF via GTS & IDS Utilisation of Satellite Observations Mainly satellite observations are downloaded through FTP Volume of data reception (Gb/day) at NCMRWF via GTS & IDS Receives satellite observations from various geostationary and polar orbiting satellites from different national and international sources viz. GTS, NOAA/NESDIS, EUMETCAST via MOSDAC, NRSC, ISSDC, IMD, etc. in real time.

Types of observations Assimilated at NCMRWF Observation category Name of Observation. Surface Surface, Mobile, Ship, Buoy (SYNOPs) Upper air TEMP (land and marine), PILOT (land and marine), Dropsonde, Wind profiler, VAD winds from IMD DWR network Aircraft AIREP, AMDAR, ACARS, KAMDAR Atmospheric Motion Vectors from Geo-Stationary Satellites AMV from Meteosat-7, Meteosat-9, GOES-11, GOES-13, MTSAT-1R, MODIS (TERRA and AQUA), POLAR WINDS (NOAA, MODIS, METOP), INSAT 3D Scatterometer winds &Soil Moisture ASCAT winds from METOP-A & Metop-B satellite, NESDIS / POES ATOVS radiance data 1bamua, 1bmhs,1bhirs3, 1bhirs4, CrIS and ATMS Satellite derived Ozone data NESDIS/POES, METOP-2 and AURA orbital ozone data Precipitation Rates GPM and SSM/I precip. rates Bending angles from GPSRO Atmospheric profiles from radio occultation data using GPS satellites (COSMIC series, GRACE etc), MT-ROSA MeghaTropique SAPHIR radiance AQUA AIRS & METOP/ IASI brightness temperature IASI,AIRS brightness temperatures GPSIPW GNSS IPW (including INCOIS GNSS network ) Geostat. Satellite Radiances GOES, Meteosat , INSAT-3D

Flow chart

T574 (EL) Utilisation of Hybrid-GSI Analysis T574 Ensembles IITM-GEFS IMD-GFS IITM-GEFS INCOIS- LEKF T574 (EL) T1534 (SL) ICs T 3 8 2 IMD-extended IITM-seasonal

BIMSTEC RIMES Regional Specific forecasts (EPS, Meteograms, forecast charts)