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Satellite precipitation estimates and the CAFFG system

Satellite precipitation estimates and the CAFFG system. By Rosario Alfaro. CAMI (Central American Mitch Initiative). No radar over the region and few gauges in real time GOES Satellite Data and the RAMSDIS system (Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama)

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Satellite precipitation estimates and the CAFFG system

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  1. Satellite precipitation estimates and the CAFFG system By Rosario Alfaro

  2. CAMI (Central American Mitch Initiative) • No radar over the region and few gauges in real time • GOES Satellite Data and the RAMSDIS system (Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama) • Precipitation estimates from the Hydro-Estimator (running in a server in Costa Rica) • CAFFG (Central American Flash Flood Guidance) system

  3. CAFFG (Central American Flash Flood Guidance) system • Developed by the Hydrological Research Center in San Diego whose Director is Dr. Kosta Georgakakos • It works automatically. Produce Different products at different times • The input data in real time: satellite precipitation estimates and temperature. • It also use historical data of precipitation, humidity, evapotranspiration and temperature • Main computational components of the system: the soil moisture model and the FFG model

  4. CAFFG(continues) • Consist of the processing and the dissemination servers both located in the National Meteorological Institute of Costa Rica. • The products are available approximately 30 minutes after each hour. • The dissemination server has the web page where the products are. • The interpretation of the products needs training. • The validation is an on going process at this time

  5. The web page (https://cds.imn.ac.cr)

  6. Flash Flood Guidance:actual rainfall of given duration that is just enough to cause bankfull flows in small streams It is calculated at 00, 06, 12 and 18 UTC for 1, 3 and 6 hrs It is not calculated for basins whose area is greater than 2000 km2

  7. Other products: ArcView tables • Basin ID • 01MAP2004102602 • 03MAP2004102600 • 06MAP2004102600 • 24MAP2004102600 • 06ASM2004102600 • 01FFG2004102600 • 03FFG2004102600 • 06FFG2004102600

  8. Errors • Precipitation • Soil • FFG • Forecast

  9. Final result Warnings for flooding in small basins of the Central American region

  10. flooding Case in Panama

  11. Case in Costa Rica flooding

  12. flooding Case in El salvador

  13. FIN END

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