Abstract

JAIMES RODRIGUEZ, Jorge et al. Trends in daily precipitation in the upper Laja-Peñuelitas basin, Guanajuato. Rev. Mex. Cienc. Agríc [online]. 2021, vol.12, n.7, pp.1263-1274.  Epub Mar 22, 2022. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v12i7.2919.

Detecting changes in the behavior of precipitation, temperature or any atmospheric variable is essential for decision makers. Identifying trends in the historical behavior of weather stations provides information for future climate behavior. The present paper analyzes the changes in the extremes of precipitation in the upper Laja-Peñuelitas basin in the state of Guanajuato, using the climate change indices developed by the team of experts on climate change detection and indices. A period of 36 years (1982-2017) was analyzed using daily precipitation data, selecting conventional weather stations with less than 25% of lost data, subjecting these databases to a process of data quality control and homogenization, obtaining 11 precipitation indices through the RClimDex program. The results show a statistical non-significant (62.09%) and significant (14.05%) upward trend, indicating that in the upper Laja-Peñuelitas basin, it is possible to establish the maintenance and slight increase in the behavior and amount of precipitation.

Keywords : climate change; homogenization RClimDex.