Temperature and precipitation regional climate series over the central Pyrenees during 1910-2013

Quality controlled homogenized regional anomaly series of temperature and precipitation are obtained for the central Pyrenees for the period 1910-2013. A 0.1 degrees Cdecade(-1) positive trend is found for minimum and maximum annual temperature exceeding the significance level of 0.05 for the whole studied period. A significant warming is found in all seasons except boreal spring in minimum temperature and winter in maximum temperature. The annual regional precipitation anomaly series shows a high inter-annual variability and a slightly negative non-significant trend of -0.6%decade(-1). Non-significant negative trends of precipitation are found in all seasons for the whole period examined. Considering the recent period 1970-2013, values of temperature trends are generally higher than those obtained for the whole period. For this latest period, all maximum temperature trends are significant while only the minimum temperature trend in winter is non-significant. Spring is the season that presents the greatest warming, with 0.9 degrees Cdecade(-1) for maximum temperature and 0.4 degrees Cdecade(-1) for minimum temperature. Evaluating the same period for precipitation anomalies, trends in the annual, winter and summer series remain negative, while spring and autumn trends are positive although non-significant. This series represents the longest homogenized climate data set available for the central Pyrenees region, including the newly recovered period 1910-1949, offering new possibilities for climate analysis and paleoclimate proxy calibration.