1. FRONTAL SYSTEMS CLIMATOLOGY OVER SOUTHEASTERN SOUTH AMERICA AND ASSOCIATED ATMOSPHERIC CIRCULATION IN A CLIMATE GCM SIMULATION Iracema FA Cavalcanti Luiz Henrique R. Coura da Silva Third Meeting of CoPis PROSUL/ IAI/CRN 055 Mar del Plata, Oct.2002

2. SOUTHEASTERN BRAZIL LARGE DISPERSION AMONG MEMBERS LOW PREDICTABILITY OCCURRENCE OF ZCAS SOUTHERN BRAZIL SMALL DISPERSION HIGHER PREDICTABILITY FRONTAL SYSTEMS

3. CRITERIUM TO SELECT CASES OF FRONTAL SYSTEMS SOUTHEASTERN: 20S-24S; 47W-43W SOUTHERN: 25S-35S; 48W-58W REDUCTION OF SPATIAL AVERAGE TEMPERATURE ABOVE A LIMIT VALUE IN 3 DAYS. INCREASE OF SLP ABOVE A LIMIT VALUE IN 3 DAYS. SOUTHEARLY MERIDIONAL WIND.

5. CASE OF A FRONTAL SYSTEM OCCURRENCE OVER SOUTHEASTERN BRAZIL SIMULATED IN ONE INTEGRATION

6. PRECIPITATION ASSOCIATED WITH THE FRONTAL SYSTEM

8. ENSEMBLE AVERAGE

17. COND1 COND2 COND3 COND4 COND9 COND8 COND7 COND5 COND6

18. SOUTH SOUTHEAST 9 CONDITIONS 10 YEARS

19. NUMBER OF CASES FOR SON SOUTH

20. NUMBER OF CASES FOR SON SOUTHEAST

21. AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION SON 1990

22. SON 1990 DAY -1DAY +1

23. AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION MAM 1990

24. MAM 1990 DAY -1DAY +1

25. AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION DJF 1990/1991

26. DJF 1990/1991 DAY -1DAY +1

27. AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION JJA 1990

28. JJA 1990 DAY -1DAY +1

29. AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHEASTERN REGION

31. EXTREME CASES OF PRECIPITATION

33. IN DEVELOPMENT ANALYSIS OF PRECIPITATION ASSOCIATED WITH FRONTAL SYSTEMS AND ANALYSE THE CONTRIBUTION OF THESE SYSTEMS TO THE PREDICTION OF MONTHLY AND SEASONAL PRECIPITATION