Abstract

MORA OROZCO, Celia de la et al. Climate change indices in the state of Chiapas, Mexico, for the period 1960-2009. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.spe13, pp.2523-2534. ISSN 2007-0934.

In the last three decades warm periods have been higher than the average values. The trend of climate indices based on the minimum and maximum temperature and precipitation recorded at meteorological stations in the state of Chiapas, Mexico, in the period from 1960 to 2009 were determined. The time series data from 16 weather stations distributed through Chiapas were used. To obtain climatic indices, the RClimDex module was used. The results showed that the number of stations with significant positive trend is higher than the number of stations with significant negative trend, from the 16 weather stations analyzed and 8 indices, 42 combinations had significant positive trend, while 18 had significant negative trend. It was observed that 63% of the stations analyzed were significant positive for extreme maximum temperature (TXx), 50% for diurnal temperature range (DTR), 44% for lower maximum temperature (TXN), 38% for number of days with minimum temperature below 20 °C (TR20), 31% for higher minimum temperature (TNx), 25% for extreme minimum temperature (TNn) and only 6% for number of days with maximum temperature above 25 ° C (SU25) and number of consecutive days without rain (CDD) respectively. In mapping the results no trends were observed in any specific area of th estate. All indices based on temperature showed similar behavior patterns and consistent with overall warming trend: These findings are consistent with previous studies in the region and elsewhere.

Keywords : climate change; Chiapas; temperature; trend.