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Este trabalho teve como objetivo estudar a frequencia de ocorrencia de rajada de vento e sua importância na seguranca das operacoes aereas, uma vez que estas apresentam significativas variacoes de intensidade do vento, podendo ocasionar, inumeros riscos para a aviacao, desde desconforto durante o voo, ate perdas de vidas humanas. Os dados foram obtidos no Aerodromo Internacional de Belem do Para, no periodo de 2009 a 2012, onde foram realizadas analises estatisticas, bem como, estudos das correlacoes dos percentuais de ocorrencias com os elementos meteorologicas de superficie (temperatura do ar e pressao atmosferica), extraidas de observacoes meteorologicas horarias da localidade em estudo. Os resultados mostram, que nos ultimos anos, a ocorrencia de rajada de vento no aerodromo de Belem-Pa, vem aumentando, onde o maior registro dessa ocorrencia dentro do periodo foi no ano de 2012. A maior frequencia de eventos de rajada por intervalos de velocidade foi de 21 a 30 KT. A maior distribuicao sazonal do registro de rajadas de vento ocorreu no periodo mais chuvoso da regiao, dezembro a maio, influenciadas pela nebulosidade, formada no Oceano Atlântico Equatorial, devido a atuacao da ZCIT. As maiores quantidades de registros de rajadas de ventos correspondem ao periodo de maximas temperaturas, sugerindo uma correlacao entre o aquecimento e a ocorrencia de rajadas proximas a superficie terrestre. A distribuicao de rajada de vento, de acordo com a orientacao do vento indica predominância dos ventos de leste, de 60o a 120o. ABSTRACT This paper aimed to study the wind occurrence frequency and its importance on the safety of flight operations, since these are significant variations in wind intensity, causing many risks to aviation, from discomfort during flight to even loss of lifes. The data were obtained from the International Aerodrome of Belem do Para, in the period from 2009 to 2012, where statistical analyzes were performed, as well as studies of correlations of the percentage of occurrences with surface meteorological elements (air temperature and atmospheric pressure), extracted from hourly meteorological observations from the study site. The results show that in recent years, the occurrence of gust of wind at the airfield of Belem-Pa, is increasing, where the highest record of this occurrence within the period was in 2012. The higher frequency of events per burst speed intervals was 21-30 KT. The largest seasonal distribution record wind gusts occurred in the rainy season in the region, from December to May, influenced by clouds formed in the Equatorial Atlantic Ocean, due to tripping of the ITCZ​. The largest amounts of records gusty winds correspond to the period of maximum temperatures, suggesting a correlation between warming and the occurrence of near Earth's surface bursts. The distribution of wind, according to the orientation of the wind indicates predominance of winds east 60 o to 120 o. Keywords: Wind direction, air temperature, atmospheric pressure.

Estudo de Frequência da Ocorrência de Rajada de Vento e seu Papel na Segurança das Operações Aéreas no Aeródromo Internacional de Belém-PA (Wind Occurrence Frequency Study and Its Importance in Air Operations Security on Belém's International Aerodrome)