Data of the thermic and descriptive variables of the monitored Pyrenean lakes.

Sample ID is a code to identify the temperature data in the lakes for each year. Lake ID is a code to identify each individual lake. The thermal variables of the lakes are: ADD7.6: Accumulated degree-days over 7.6°C (°C day); ADD4: Accumulated degree-days over 4.0°C (°C day); Tmean: Mean epilimnetic temperature of the ice free period (°C); Tmax: Maximum epilimnetic temperature (°C); DTR: Diel temperature range (°C); Tosc: Oscillation in maximum temperature in a three-day lapse (°C). Seasonal air temperatures are Tspring (°C) for spring (March, April and May)and Tsummer (°C) from summer (June, July and August). Descriptive variables are Year: The year of the temperature variables, Altitude (m); Larea (ha): Lake area; Dcatchment (ha): The catchment which flows directly to the lake; Tcatchment (ha): The total catchment of the lake; Radiation (h) The sun hours per day incoming to the lake catchment. X and Y (m) are the Geographic Coordinates in ETRS89 UTM 31N projection. (XLSX)