ANALYSIS OF THE CONCENTRATION AND SOME PRECIPITATION INDICES IN THE STATE OF JALISCO, MEXICO

• DOI: 10.22533/at.ed.3173322322097

• Palavras-chave: precipitation; precipitation concentration; concentration index

• Keywords: precipitation; precipitation concentration; concentration index

• Abstract:

  This work presents an analysis of the behavior of precipitation concentration in the state of Jalisco. The study of precipitation concentration has recently been used as a tool to analyze the statistical structure of precipitation. In particular, the precipitation concentration indices analyze the contribution of the days with the highest precipitation to the total precipitation. The objective of this work consisted of the analysis of the behavior of precipitation using the precipitation concentration index, in addition to five precipitation indices developed by the Team of Experts in the Monitoring and Detection of Climate Change and Indices (ETCCDMI), in both cases taking as reference the rainfall data of the state of Jalisco, Mexico. With the results of each station, a spatial interpolation was carried out to know the variations of the index throughout the territory of the state of Jalisco. The results obtained for the concentration index range between 0.487 and 0.687, these values are considered in the literature as values for medium and high concentrations. The highest values of the concentration index are more frequent along the coastal zone of the state, which could suggest that cyclonic activity in this zone plays an important role in the behavior of precipitation, although some important values are also observed in the central and northern regions of the state. Regarding the ETCCDMI indices, a decreasing trend was mainly observed in the case of total annual precipitation (PRCPTOT) and on the other hand an increase in the index of consecutive dry days (CDD), the latter being able to influence the way in which Precipitation is concentrated throughout the year.