Cold poles in Hernán Pelea and Cabrilla plateau (Jaén, Spain), synoptic and microscale factors
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Abstract
The large and inhospitable plateaus located in the Segura and Cabrilla mountain (the watershed between the Segura and Guadalquivir river basin), present a microclimatic stereotype characterized by extremely cold winters, with absolute minimum temperatures around to -30ºC in winter, and -10ºC and -15ºC in autumn and spring respectively. The data recorded has been obtained from its own network of thermometers (dataloggers) between october 2016 and march 2021 (with a total of five winter). Through the statistical analysis of data ten minutes and daily of three observation points (Monterilla, Navalasno and Nava del Polvo), satellite images (VIIRS LST), and mesoscale reanalysis, carry out the first climatic description of the study area is possible, as well as the identification of the triggering factors (synoptic and microscale) of the extreme minimum temperatures recorded, and the analysis of the typology of the inversion temperature nocturnal processes (ITN) and cold air pools (CAP) generated in the study area. Although the predominant type of cold pool is turbulent erosion (39,0%), the nocturnal stability processes are intense (CINV between 7.6 and 12.5ºC).
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