Air temperature evolution in the Pyrenees is analyzed from the daily maximum, minimum and mean temperature series for the period 1959-2020 recorded at 12 representative observation points of the entire Massif (different altitudes, different slopes, etc.), and that have passed various quality control and homogeneity processes. With these daily temperature data, the annual values of 19 climate change indicators have been calculated and, subsequently, the trend value for each of them.
The 19 climate change indicators related to air temperature that have been analyzed are :
Annual mean temperature (TM) / Annual maximum temperature (TX) / Annual minimum temperature (TN)
Frost days (FD0) / Icing days (ID0) / Summer days (SU25) / Tropical nights (TR20)
Growing season length (GSL) / Maximum of TX (TXx) / Maximum of TN (TNx)
Minimum of TX (TXn) / Minimum of TN (TNn) / Cold nights (TN10p) / Cold days (TX10p)
Warm nights (TN90p) / Warm days (TX90p) / Warm spell duration index (WSDI)
Cold spell duration index (CSDI) / Diurnal temperature range (DTR)
Below you can access each of the aforementioned indicators, with information on their definition, the calculation methodology and the temporal evolution graphs for each series and for different areas of the Pyrenees.
