Análise Climática Da Cidade De Manaus (Am), Usando Dados Geotérmicos E Meteorológicos

The focus of this paper is on the detect microclimate<br>changes in Manaus City (AM), Brazil in attempting to<br>indicate the possible causes for the fluctuations and<br>trends observed. The analysis is based in<br>Meteorological and shallow geothermal records. The<br>meteorological data indicated an increment of 0.27 ±<br>0.04 ºC in the mean surface air temperature during<br>the last 80 years with reference to the 1950-1979<br>climatological mean and this increment has not been<br>continuous, but seem to be modulated by frequency<br>of El Niño, La Niña e Neutral events over the tropical<br>Pacific Ocean. Though, an quasi-instantaneous<br>increment of 3.17 ± 0.53 ºC was determined from<br>geothermal data, which is likely associated with the<br>land-use changes. From shallow geothermic data<br>under sites with vegetation cover we verified that<br>transient perturbations are good indicators of recent<br>annual climate variability, while analysis of<br>temperature profiles data under sites without<br>vegetation cover seem to indicate microclimate<br>changes related to the anthropogenic actions like<br>deforest and urbanization action.<br>Keywords: Microclimate Changes; Anthropogenic<br>Actions; Natural Variability