FRONTAL SYSTEMS CLIMATOLOGY OVER SOUTHEASTERN SOUTH AMERICA AND ASSOCIATED ATMOSPHERIC CIRCULATION IN A CLIMATE GCM SIMULATION Iracema FA Cavalcanti Luiz.

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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

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

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.

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

PRECIPITATION ASSOCIATED WITH THE FRONTAL SYSTEM

ENSEMBLE AVERAGE

COND1 COND2 COND3 COND4 COND9 COND8 COND7 COND5 COND6

SOUTH SOUTHEAST 9 CONDITIONS 10 YEARS

NUMBER OF CASES FOR SON SOUTH

NUMBER OF CASES FOR SON SOUTHEAST

AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION SON 1990

SON 1990 DAY -1DAY +1

AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION MAM 1990

MAM 1990 DAY -1DAY +1

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

DJF 1990/1991 DAY -1DAY +1

AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHERN REGION JJA 1990

JJA 1990 DAY -1DAY +1

AVERAGE FIELDS OF FRONTAL SYSTEMS CASES OVER SOUTHEASTERN REGION

EXTREME CASES OF PRECIPITATION

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