Investigation of precipitation and temperature changes in Turkey in the last climate period

Abstract

Time-dependent changes in temperature and precipitation parameters can cause natural events such as drought and flood to turn into natural disasters, which can adversely affect living life and the economy. The aim of this study is to examine the changes in precipitation and temperature of Turkey between the last climate period (1991-2020) and the previous climate period (1981-2010). The precipitation and temperature data used in the study are long-term average data obtained from monthly average data. In the study, the changes in temperature and precipitation were examined in 81 province stations. In addition, interpolation maps were created for the variation of temperatures and precipitation according to location. When the old (574 mm) and new (573.4 mm) precipitation normals are examined throughout the country, it has been determined that there is a decrease of 0.6 mm. On a provincial basis, the highest decrease (586.4 mm-511.1 m) was determined in Erzurum with 75.3 mm (12.84%). The highest increase (1407.5 mm-1602.2 mm) was found in Rize with an increase of 194.7 mm (13.83%). It is observed that the annual average temperature normals tend to increase in all regions of our country. The highest temperature increase (3.6°C-4.3°C) was seen in Ardahan with an increase of 0.7 °C (19.44%). The only province with a decrease in temperature compared to the old normal (9.6°C-9.4°C ) is Bitlis with a decrease of 0.2 °C (2.08%).