As incursões de ar frio no Estado do Amazonas

Abstract

The state of Amazonas is reached annually by the incursions of cold air during austral winter. These cold air masses of polar origin, locally known as friagens, cause sudden drops in air temperature. In this study we analyzed 14 cases of chills occurred in the state of Amazonas during the period 2000 to 2010 with minimum temperature, the National Institute of Meteorology. Data from the numerical model (NCEP / NCAR) were used to simulate the dynamic and synoptic conditions leading event in July 2010, the most intense period of study, which showed temperatures of 11.8 ° C in the southwest of the state and 16 ° C in Iuauretê, as in the northern hemisphe re. The population of students from the cities of southwestern Amazon, mostly suffers no adverse impacts to the incursions of cold air. However, from analysis of data from the state Department of Rural Production (Sepror), it appears that fish production can be seriously affected events with intense cold, falling production, causing losses to fish farmers and thus for the Amazonas economy .