Resumo

ZARAZUA VILLASENOR, Patricia et al. Indices of temperature extremes in the South Gulf Coastal Plains in Mexico. Rev. Mex. Cienc. Agríc [online]. 2014, vol.5, n.spe10, pp.1843-1857. ISSN 2007-0934.

Climate change is already widely studied, showing increases in maximum and minimum temperatures, but increases were also reported related to the extreme daily maximum and minimum temperatures, which has led to the need to determine the behaviour of these extremes at regional level in order that decision-makers can develop adaptation measurements. The aim of this study was to evaluate the tendencies ofthe climate indices ofweather extremes based on the maximum and minimum daily temperatures for the South Gulf Coastal Plains region. Featuring the database of daily maximum temperature and daily minimum temperature of 31 weather stations located in this area. After making an analysis of the quality of the series and homogenizing on them when necessary, we obtained thirteen out ofthe twenty seven indices established by the Expert Panel on Detection, Monitoring and Indices of Climate Change (EPDMICC). We applied a principal component analysis and a cluster analysis. Regional tendencies of the significant climate variation indices of the area were obtained and finally an analysis of stationality of these indices was performed in the region. The results show an increase in several of the extreme indices, being the most significant, the frequency of warm nights and hot days frequency which show higher increase during summer and autumn.

Palavras-chave : climate trend; Mexico; South GulfCoastal Plains; uniformity of climatic series; warm days; warm nights.

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