Silva, Cláudio Moisés Santos eCosta, Caio Vasconcelos Pinheiro da2017-03-072017-03-072014-12-15COSTA, Caio Vasconcelos Pinheiro da. Evidências observacionais de ilhas de calor urbanas em Natal, Brasil, no período de 1970 a 2010. 2014. 55f. Dissertação (Mestrado em Ciências Climáticas) - Centro de Ciências Exatas e da Terra, Universidade Federal do Rio Grande do Norte, Natal, 2014.https://repositorio.ufrn.br/jspui/handle/123456789/22163This work conducted a study from a set of meteorological data collected in the city of Natal / RN and surroundings, identifying evidence of changes in its urban climate during the period from 1970 to 2010. The variables used were: average temperature, minimum temperature and relative humidity. Data were obtained from the meteorological stations located in the Central Campus of the Federal University of Rio Grande do Norte (UFRN) that is part of the network of observations from the National Institute of Meteorology (INMET) and from Barreira do Inferno Launch Center (CLBI), located inside an urban area and inside a permanent protection area (APP), respectively. An analysis of the seasonal variation of the meteorological variables was performed. In addition, the trends were evaluated in time series, using for this the template MAKESENS, that applies the Mann-Kendall test and Sen's slopes estimates with the data set. For the average temperature in UFRN/INMET, there was growth trend in May, July and September, at the significance levels of 10%, 5% and 10%, respectively. In CLBI, there was only upward trend in average temperature in February, at the 10% significance level. Regarding the minimum temperature, there was growth trend with statistical significance in four series (January, November, December and annual average) in UFRN/INMET, at the levels of 10%, 10%, 5% and 5%, respectively, and just one in CLBI, in September, at the 10% significance level. In relation to the relative humidity, the results were extremely disparate. To UFRN/INMET, there was decreasing trend with statistically significance in 7 of the 13 series, these being January, March, April, May, October, November and annual average, at the levels of 5%, 1%, 0.1%, 10%, 5%, 5% and 0.1%, respectively, while in CLBI there was a prevailing trend of growth, with a significance of 1% in June and 5% in August.These trends are more pronounced in urban areas compared to surrounding area, showing some typical characteristics of Urban Heat Islands.Acesso AbertoIlha de calor urbanaTeste de Mann-KendallMétodo de SenMudanças climáticasmasterThesisCNPQ::CIENCIAS EXATAS E DA TERRA: CIÊNCIAS CLIMÁTICAS