1. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia EVALUATION OF HIGH RESOLUTION SATELLITE PRODUCTS UNDER COMPLEX PRECIPITATION REGIMES Augusto J. Pereira Filho 1 Phillip Arkin 2 Phillip Arkin 2 Joe Turk 3 Ricardo Hallak 1 Felipe Vemado 1 Cesar Beneti 4 1 DAC/IAG, University of São Paulo, Brazil 2 ESSIC, University of Maryland, College Park, USA 3 NRL, Marine Meteorology Division, USA 4 SIMEPAR, Paraná, Brazil

2. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia Program for the Evaluation of High Resolution Precipitation Products (PEHRPP) coordinated by ESSIC and NRL. Goal is to compare and to validate these high resolution datasets.

3. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia SPWR RAINFALL ESTIMATES X CMORPH, TRMM, PERSIANN and NRL- BLENDED (m) São Paulo, Brazil.

4. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia SPWR DATASETS: 10/2005 TO 03/2006; SATELLITE PRECIPITATION DATA: 0.25 DEGREE X 3-HOUR; SYSTEM TYPES: COLD FRONT, RAIN BANDS, ORDINARY CONVECTION COLD FRONT, RAIN BANDS, ORDINARY CONVECTION, SQUALL LINES

5. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia EXAMPLES

6. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia COLD FRONT

7. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia RAIN BANDS

8. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia ORDINARY CONVECTION

9. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia 0,1 mm 0,2 mm 1,0 mm 4,0 mm OVERALL RESULTS All data sets available 10/05 to 03/06

10. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia CONCLUSION Coordinate discrepancies;Coordinate discrepancies; Phase and amplitude errors;Phase and amplitude errors; All four methods yielded poor results;All four methods yielded poor results; Radar rainfall accumulation higher than satellite ones;Radar rainfall accumulation higher than satellite ones; Radar data with range effect and other problems;Radar data with range effect and other problems; Best performance for low rainfall accumulation: CMORPH;Best performance for low rainfall accumulation: CMORPH; Best performance for higher accumulation: PERSIANN;Best performance for higher accumulation: PERSIANN; Fewer data for PERSIANN;Fewer data for PERSIANN; All methods are limited;All methods are limited; Need for rain gauges and stream gauges verification.Need for rain gauges and stream gauges verification.

11. 3 rd INTERNATIONAL PRECIPITATION WORKING GROUP WORKSHOP 23-27 October 2006, Melbourne, Australia THE END Work supported by: FAPESP and CNPq (BRAZIL) FAPESP and CNPq (BRAZIL) NCAR and ESSIC (USA) NCAR and ESSIC (USA)