Monthly time series of mean temperatures. Four meteorological stations in Ethiopia situated in close proximity to the study areas were selected. Monthly averages of daily minimum and maximum temperature data for the stations in Ethiopia were obtained from the Ethiopian National Meteorological Agency (NMA).
The four climate stations in Ethiopia (namely Addis Ababa (Bole), Addis Ababa (Obs), Adama and Debre Zeit) were selected based on their proximity to Debre Zeit town (within 50 km) and their high correlation with Debre Zeit’s station readings. Missing data were filled by the lagged 5 year climatology (average for the same month in the preceding five years). Data for the four stations were then averaged for the two variables, and monthly mean temperature were generated by taking the average of the monthly minimum and maximum temperature.