Climatic water balance and thornthwaite and mather (1955) climate classification for manicorÉ municipality in amazonas south mesoregion

Abstract

Climate pattern can be described by the conditions of the meteorological variables that exert influence on human activities. Agriculture, in its turn, is conditioned by water availability, which can be known through water balance. This paper aimed to analyze precipitation and air temperature, as well as to perform the climat ic water balance and climatic classification in the municipality of Manicoré (Amazonas State, Brazil). Data were collected from the meteorological station of the National Institute of Meteorology from 2010 through 2018. Potential evapotranspiration was calculated by the Thornthwaite model (Thornthwaite, 1948). Water balance and climatic classification were estimated by Thornthwaite and Mather (1955) methodology. The results were analyzed with descriptive statistics. The mean annual precipitation was 2.946.20 mm, of which 90% occurred in the rainy season. The average annual air temperature ranged from 25 to 27 ° C. The mean annual water deficit was 267.91 mm from May through September. The average annual water surplus was 1,609.26 mm from December through April. The annual average potential evapotranspiration was 1,604.85 mm, with maximum in August and minimum in July. Finally, the climatic classification was AwA'a ', super humid megathermal climate with moderate water deficiency in winter.