Table 2. Data labels and description for data values file (values.csv).

Value label—change to this	Value description
See the text for how ‘summer’ is defined for each lake location. ‘Winter’ is defined as the 3-month period opposite to ‘summer’ in the calendar year (e.g., winter is January-February-March for lakes where summer is July-August-September, and vice versa). Air temperatures were obtained from National Centers for Environmental Prediction (NCEP) and Climatic Research Unit (CRU), radiation from Surface Radiation Budget (SRB) and cloud cover from Advanced Very High Resolution Radiometer Pathfinder Atmosphere Extended dataset (PATMOS).
Lake_Temp_Summer_InSitu	Mean lake surface water temperatures for the summer 3-month period collected by in situ methods in degree centigrade
Air_Temp_Mean_Summer_NCEP	Mean air temperature for the summer 3-month period in degree centigrade, from NCEP
Air_Temp_Mean_Annual_NCEP	Annual mean air temperature in degree centigrade, from NCEP
Air_Temp_Mean_Winter_NCEP	Mean air temperature for the winter 3-month period in degree centigrade, from NCEP
Lake_Temp_Summer_Satellite	Mean lake surface water temperatures for the summer 3-month period collected by satellite methods in degree centigrade
Radiation_Shortwave_Summer	Amount of incoming shortwave radiation, during the summer 3-month period in watts per square meter, from SRB
Radiation_Shortwave_Winter	Amount of incoming shortwave radiation, during the winter 3-month period in watts per square meter, from SRB
Radiation_Longwave_Summer	Amount of incoming longwave radiation, during the summer 3-month period in watts per square meter, from SRB
Radiation_Longwave_Winter	Amount of incoming longwave radiation, during the winter 3-month period in watts per square meter, from SRB
Radiation_Total_Summer	Total amount of incoming radiation, as calculated from shortwave and longwave in watts per square meter, during the summer 3-month period
Radiation_Total_Winter	Total amount of incoming radiation, as calculated from shortwave and longwave in watts per square meter, during the winter 3-month period
Radiation_Shortwave_Annual	Amount of incoming shortwave radiation during the year in watts per square meter, from SRB
Radiation_Longwave_Annual	Amount of incoming longwave radiation during the year in watts per square meter, from SRB
Radiation_Total_Annual	Total amount of incoming radiation during the year, as calculated from annual shortwave and longwave in watts per square meter
Cloud_Cover_Summer	Mean % cloud cover for the summer 3-month period, from PATMOS
Cloud_Cover_Winter	Mean % cloud cover for the winter 3-month period, from PATMOS
Cloud_Cover_Annual	Annual mean of % cloud cover, from PATMOS
Air_Temp_Max_Summer_CRU	Mean of the daily maximum air temperatures for the summer 3-month period in degree centigrade, from CRU
Air_Temp_Max_Annual_CRU	Mean of the daily maximum air temperatures for the year in degree centigrade, from CRU
Air_Temp_Max_Winter_CRU	Mean of the daily maximum air temperatures for the winter 3-month period in degree centigrade, from CRU
Air_Temp_Mean_Summer_CRU	Mean air temperature for the summer 3-month period in degree centigrade, from CRU
Air_Temp_Mean_Annual_CRU	Annual mean air temperature in degree centigrade, from CRU
Air_Temp_Mean_Winter_CRU	Mean air temperature for the winter 3-month period in degree centigrade, from CRU
Air_Temp_Min_Summer_CRU	Mean of the daily minimum air temperatures for the summer 3-month period in degree centigrade, from CRU
Air_Temp_Min_Annual_CRU	Annual mean of the daily minimum air temperatures in degree centigrade, from CRU
Air_Temp_Min_Winter_CRU	Mean of the daily minimum air temperatures for the winter 3-month period in degree centigrade, from CRU
Air_Temp_DTR_Summer_CRU	Mean of the daily diurnal temperature range (DTR) (calculated as the daily maximum minus the daily minimum) for the summer 3-month period in degree centigrade
Air_Temp_DTR_Annual_CRU	Annual mean of the daily diurnal temperature range (DTR) (calculated as the daily maximum minus the daily minimum) in degree centigrade
Air_Temp_DTR_Winter_CRU	Mean of the daily diurnal temperature range (DTR) (calculated as the daily maximum minus the daily minimum) for the winter 3-month period in degree centigrade