Detailed weather data for the provinces covered by the Southeastern Anatolia Project (GAP) of Turkey

The Southeastern Anatolia Project (GAP) of Turkey is a multi-faceted and integrated regional development project based on the concept of sustainable development. The project area covers nine provinces (Adıyaman, Batman, Diyarbakır, Gaziantep, Kilis, Mardin, Siirt, anlıurfa and ırnak) in the Euphrates–Tigris basins and Upper Mesopotamia plains. In this study, detailed weather data are presented for these provinces (except ırnak). The data consist of new outdoor design conditions for heating and cooling according to the format recommended by the American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc. (ASHRAE), the heating and cooling degree-days for different base temperatures and the bin data for dry-bulb temperatures from −21 °C to 45 °C with 3 °C increments, in six daily 4-h shifts. These data are determined by using long-term recently-measured data.