Influência da temperatura da superfície dos oceanos tropicais na ocorrência de veranicos no Estado da Paraíba.

Abstract

The objective this work is to verify possible influences of the surface sea temperature (SST) anomalies in the Equatorial Pacific and the Tropical Atlantic on the duration of the dry spell of the rainy stations of the micros and meso-regions of the Paraíba state, and the relation between the dry spell and the productions of Sugarcane, Rice, Pineapple, Cotton, Fiber agave, Corn and Beans for the meso-regions of the Paraíba state, daily precipitation data had been used to estimate the dry spells. The data are originating from Supervision of the Northeast Development (SUDENE) and from Meteorology Laboratory of the Paraíba state (LMRS-PB). The data comprehend the period from January 1 of 1963 to December 31 of 1999, and monthly SST anomalies on the regions of the niños: Niño 1+2, Niño 3, Niño 3.4 and Niño 4, and monthly Tropical North and South Atlantic Indices (TNAI and TSAI) from October of 1962 to December of 1999, the database of the Diagnostic Center of Climate of the NOAA. Data of Sugarcane, Rice, Pineapple, Cotton, Fiber agave, Corn and Beans annual productions on the Paraíba state from the IBGE for the period from 1975 to 1994 were used. The dry spell for each micro and meso-regions had been estimate. They also had been elaborated the correlation and graphical analyses between the SST anomalies and the dry spells, and between dry spells and agricultural productions. The conclusions were: the dry spells of the east of the State are influenced by the conditions of the Tropical Atlantic, while the dry spells of the central and west parts of the State were directly affected by the conditions of Equatorial Pacific. The agricultural productions of the part east were not directly affected by the dry spells, while of the central and west parts were affected by the dry spells, corn and beans mainly.