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Drought Monitoring System
16/04/2020
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Drought Monitoring System is used to monitor meteorological drought situation by overlapping various data and factors to analyze the drought risk.
The Estimation of Drought Risk Area
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DROUGHT INDEX is calculated by scoring various factors as follows,
- The irrigation area from Royal Irrigation Department
- Average rainfall 30 years from Thailand Meteorological Department
- Repetitious drought area from Land Development Department
Accumulative rainfall 15 days from PERSIANN satellite (Bias-Corrected) was used to specify drought area from rain-shortage or rain recession.
Other factors
- Accumulative rainfall 7 and 10 days from PERSIANN satellite
- Accumulative rainfall forecasting 5 and 7 days from WRF-ROMS (Weather Research and Forecasting-Regional Ocean Model System) model
- Normalized Difference Vegetation Index (NDVI) 16 days from MODIS satellite
- Soil Water Index (SWI) from METOP-ASCAT satellite
- Dam level from Royal Irrigation Department