| ACWC |
Area Cyclone Warning Centre |
| ADT |
Advanced Dvorak Technique |
| AIGS |
All India General Scheme |
| AIR |
All India Radio |
| AMSS |
Automatic Message Switching System |
| AMSU |
Advanced Microwave Sounder Unit |
| ARB |
Arabian Sea |
| ARG’s |
Automatic Rain Gauge Stations |
| AWS |
Automatic Weather Station |
| BoB |
Bay of Bengal |
| BoM |
Bureau of Meteorology |
| C.I. No. |
Current Intensity Number |
| CAPE |
Convective Available Potential Energy |
| CCD |
Charge Coupled Device |
| CDMC |
Cyclone Distress Mitigation Committee |
| CDO |
Central Dense Overcast |
| CDR |
Cyclone Detection Radars |
| CDs |
Cyclonic Disturbances |
| CIMSS |
Cooperative Institute for Meteorological Satellite Studies |
| CINE |
Convective Inhibition Energy |
| CIPS |
Cooperative Institute for Precipitation Systems |
| CLIPER Model |
Climatology and Persistence Model |
| CMV |
Cloud Motion Vectors |
| COU |
Cone of Uncertainty |
| CPC |
Climate Prediction Centre |
| CRC |
Cyclone Review Committee |
| CTT |
Cloud Top Temperature |
| CWC |
Cyclone Warning Centre |
| CWCs |
Cyclone Warning Centres |
| CWD |
Cyclone Warning Division |
| CWRC |
Cyclone Warning Research Centre |
| DMDD |
Digital Meteorological Data Dissemination |
| DMSP |
Defence Met. Satellite Programme of U.S.A. |
| DPE |
Direct Position Error |
| DRMS |
District-wise Rainfall Monitoring Scheme |
| DWR |
Doppler Weather RADAR |
| ECMWF |
European Centre for Medium-Range Weather Forecasts |
| EEC Radars |
Enterprise Electronics Corporation Radars |
| EIR |
Enhanced Infrared |
| EPS |
Ensemble Prediction System |
| FNMOC |
Fleet Numerical Meteorology and Oceanography Center |
| GEFS |
Global Ensemble Forecast System |
| GFS |
Global Forecast System |
| GMDSS |
Global Maritime Distress Safety System |
| GPP |
Genesis Potential Parameter |
| GTS |
Global Telecommunication System |
| HFRT |
High Frequency Radio Transmission |
| HSDT |
High Speed Data Terminals |
| HWRF |
Hurricane Weather Research and Forecasting |
| IADP |
Intensive Agricultural Development Programme |
| IAF |
Indian Air Force |
| ICAO |
International Civil Aviation Organisation |
| IITD |
Indian Institute of Technology Delhi |
| IMD |
India Meteorological Department |
| IMDPS |
Indian Meteorological Data Processing System |
| INCOIS |
Indian National Centre for Ocean Information Services |
| INOSHAC |
Indian Ocean & South Hemispheric Centre |
| INSAT |
Indian National Satellite System |
| IOP |
Intense Observation Period |
| IR |
Infrared Red |
| ITCZ |
Inter-Tropical Convergence Zone |
| IVRS |
Interactive Voice Response System |
| JMA |
Japan Meteorological Agency |
| JTWC |
Joint Typhoon Warning Center |
| LES |
Local Earth Station |
| LLCCs |
Low level circulation centres |
| Max (Z) |
Maximum reflectivity |
| MFI |
Meteo France International |
| MHA |
Ministry of Home Affairs |
| MJO |
Madden-Julian oscillation |
| MM5 |
Fifth-Generation Penn State/NCAR Mesoscale Model |
| MME |
Multi Model Ensemble |
| MSLP |
Mean Sea Level Pressure |
| MSW |
Maximum Sustained Wind |
| MW |
Microwave |
| NASA GHCC |
National Aeronautics and Space Administration- Global Hydrology and Climate Centre. |
| NBDP |
Narrow Band Direct Printing |
| NCMRWF |
National Centre for Medium Range Weather Forecast |
| NDBP |
National Data Buoy Programme |
| NDM |
National Disaster Management |
| NDMA |
National Disaster Management Authority |
| NDRF |
National Disaster Response Force |
| NIDM |
National Institute Disaster Management |
| NIO |
North Indian Ocean |
| NIOT |
National Institute of Ocean Technology |
| NOAA |
National Oceanic and Atmospheric Administration |
| NRL |
Naval Research Laboratory |
| NSDC |
National Satellite Data Centre |
| NWFC |
National Weather Forecasting Centre |
| NWP |
Numerical Weather Prediction |
| OLR |
Outgoing Longwave Radiation |
| PBO |
Pilot Balloon Observatories |
| PMSS |
Probable Maximum Storm Surge |
| PPI(Z) |
Plan position indicator |
| PRBS |
Pseudo-Random Burst Technique |
| QPE |
Quantitative Precipitation Estimation |
| RMC |
Regional Meteorological Centre |
| RMR |
Radius of Maximum Reflectivity |
| RMW |
Radius of Maximum Wind |
| RS/RW |
Radio sonde/ Radio wind |
| RSMC |
Regional Specialized Meteorological Centre |
| RSS |
Remote Sensing Systems |
| RTH |
Regional Telecommunication Hub |
| SAARC |
South Asian Association for Regional Cooperation |
| SCIP |
Statistical-Dynamical Model for Cyclone Intensity Prediction |
| SLP |
Sea Level Pressure |
| SMRC |
SAARC Meteorological Research Centre |
| SRI |
Surface rainfall intensity |
| SST |
Sea surface temperature |
| STDS |
Satellite Tropical Disturbance Summary |
| TB |
Brightness Temperature |
| TC |
Tropical Cyclones |
| TCAC |
Tropical Cyclone Advisory Centre |
| THORPEX |
The Observing System Research and Predictability Experiment |
| TIGGE |
THORPEX Interactive Grand Global Ensemble |
| TMI |
TRMM Microwave Imager |
| TPC |
Tropical Prediction Centre |
| TPW |
Total Precipitable Water |
| TRMM |
Tropical Rainfall Measuring Mission |
| UKMO |
UK Meteorological Office |
| UTC |
Coordinated Universal Time |
| UWT |
Uniform wind technique |
| VHRR |
Very High Resolution Radiometer |
| VIS |
Visible |
| VOF |
Voluntary Observing Fleet |
| VVP(Z) |
Volume Velocity Processing |
| WMO |
World Meteorological Organisation |
| WRF |
Weather Research and Forecasting Model |
| WV |
Water Vapour |
| WVWs |
Water Vapour Winds |