1. Some Experiments in Running the RegCM over the Philippines Presented by: Raquel V. Francisco Department of Science and Technology Email: raquelf@ictp.trieste.it raquelfrancisco2001@yahoo.com

2. DOMAIN SIZE GRID RESOLUTION n Limited resources n 3 runs –64x68 grids, 60km –96x131grids, 60 km –128x137, 30 km

3. DOMAIN SIZE TOPOGRAPHY

4. GRID RESOLUTION: 55x55 km vs 30x30 km

6. DOMAIN SIZE: RAINFALL AND WINDS

11. DOMAIN RESOLUTION: RAINFALL AND WINDS

17. Moisture and winds

18. Computer Time for 1 month simulation 48x65, 55 km : 5 hrs and 20 min 96x131, 55 km : ~ 17 hrs 128x137, 30 km : ~ 48 hrs

19. FLOODS

23. Chedeng (Linfa) leaves 37 dead,... - May 31, 2003 this story was taken from www.inq7.net THE DEATH toll caused by tropical storm "Chedeng" rose to 37 as of Friday. In Malolos City, two houses in the coastal village of Pamarawan were destroyed after a tornado hit the area. At least eight Bulacan towns were still flooded Friday. In Pangasinan, 39 towns and cities in the province were still under floodwater. Chedeng continued to move farther away from the country but a new low pressure area was spotted 130 kms northwest of Zambales.

24. Damage to farm and fisheries was stimated at 72.3 million pesos. Hard-hit areas were provinces in the Cordilleras and Central Luzon. The water levels in the Ambuklao and Binga hydroelectric dams in Benguet were already near critical levels. As of 7 a.m. Friday, the water level in Ambuklao was 747.75 meters, which is less than five meters below the maximum of 752 meters. The water level in Binga was 570.21 meters, also less than five meters below the maximum level of 575 meters.

26. GCM REGCM Hydrological Model FLOOD FORECASTING

27. CONCLUSIONS n There is a need for much improvement in the RegCM itself. –Reinitialize every 10 days? –More sensitivity studies on Convective Schemes –Investigate PBL ( according to Qian, there is a large change in Ps from land to ocean)

28. ACKNOWLEDGMENTS n ICTP PEOPLE AND FACILITIES n Edna Juanillo for helping me gather n the pictures and news