Impacto do Ciclone Tropical Chapala nas variáveis atmosféricas no Iêmem (Impact of cyclone tropical Chapala in variable weather in Yemen)
DOI:
https://doi.org/10.5935/1984-2295.20160158Keywords:
Processos Sinóticos, Ciclone, Iêmen.Abstract
A análise sinótica é essencial para o entendimento de eventos e/ou fenômenos que acontecem na atmosfera e que muitas vezes estão diretamente relacionados com impactos à sociedade, como os ciclones tropicais, que causam precipitação excessiva e ventos fortes. No ano de 2015 um intenso ciclone tropical se formou sobre o oceano Índico e ao se deslocar para leste adentrou a península Arábica, atingindo de forma devastadora o Iêmen. Diante do exposto, este estudo tem dois objetivos: a análise sinótica do ciclo de vida do ciclone Chapala e a verificação do impacto que o ciclone causou nas variáveis atmosféricas no Iêmen e no arquipélago de Socotra. Para tanto, foram utilizados dados das componentes zonais e meridionais do vento, altura geopotencial, temperatura do ar, pressão reduzida ao nível médio do mar e umidade relativa do ar obtidos do Global Forecast System Analysis. O ciclo de vida do ciclone Chapala foi analisado em três estágios: ciclogênese (12Z do dia 27 de outubro de 2015), maturidade (12Z do dia 30 de outubro de 2015) e decaimento (12Z do dia 03 de novembro de 2015). Na maturidade é quando o sistema apresenta os maiores desvios de temperatura no núcleo em relação ao ambiente externo. Ao chegar ao Iemem, no decaimento, o ciclone causou chuvas e ventos fortes.
A B S T R A C T
The synoptic analysis is essential to the understanding of events and/or phenomena that occur in the atmosphere and are often directly related impacts to society, such as tropical cyclones, which cause excessive rainfall and strong winds. In the year 2015 an intense tropical cyclone formed over the Indian Ocean and move east entered the Arabian Peninsula, reaching devastating form Yemen. Given the above, this study has two objectives: a synoptic analysis of the cyclone life cycle Chapala and checking the impact of the cyclone caused in atmospheric variables in Yemen and Socotra archipelago. Therefore, the zonal and meridional components of the wind data were used, geopotential height, air temperature, low pressure at mean sea level and relative humidity obtained from the Global Forecast System Analysis. The Chapala cyclone life cycle was analyzed in three stages: cyclogenesis (12Z of the day October 27, 2015), maturity (12Z of the day October 30, 2015) and decay (12Z day November 3, 2015). At maturity it is when the system has the highest temperature deviations in the nucleus relative to the external environment. Upon arriving to Yemen, the decay, the cyclone caused rains and strong winds.
Keywords: synoptic analysis, cyclone, Yemen.
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Copyright (c) 2016 André Luiz Reis, Matias Sales Silva, Wilson William Silveira, Michele Simões Reboita
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