<b>The genesis of scanty rainfall in Maringá, Paraná State, Brazil, during the months of May 2003 and May 2005</b> - DOI: 10.4025/actascitechnol.v32i1.4514

Abstract

The atmospheric systems accountable for scanty rainfall during May 2003 and May 2005 in Maringá, Paraná State, Brazil, are identified. Surface meteorological data on daily variables of climatic elements have been employed for the creation of a table for each month under analysis. They were chosen as dry May samplings. Tables were analyzed concomitantly with an investigation on daily surface meteorological synoptic charts and on satellite photos, so that the atmospheric systems causing different types of climate might be identified. Results show that scanty rainfall in Maringá during the periods under analysis was caused by cold anti-cyclone activities which followed after frontal systems and by the activities of Atlantic Tropical System on the South American subcontinent. The latter normally blocks out cold fronts near latitude 30°S which, in turn, displace themselves towards the Atlantic Ocean before reaching the investigated area.