تباين درجات الحرارة اليومية العظمى والصغرى في فصل الصيف في مدينة بغداد

Abstract

The air temperature is considered one of the important elements of the air because of its wide effects on climate variables. So, this research came to describe the climate of Baghdad using maximum and minimum temperature in Summer specifically. This research depended on data obtained from Iraqi Meteorological Organization and Seismology (IMOS) for the period (1970-2013) for Baghdad city. Averages monthly were calculated using the daily data, and then the anomilies from the average were calculated for the maximum and minimum temperatures for each month which analyzed and discussed to identify main characteristics for Summer season and show the months which have gained Summer characteristics. The data was also compared with the European Data Center. The results showed that the general trend of temperatures has increased with time significantly from the monthly average in spite of variation in these averages. Studying the anomilies of the maximum and minimum temperatures showed that the highest increase of the minimum temperatures is 4˚C, while for the maximum temperatures is 2˚C. The results showed that May is approaching Summer features for maximum temperatures, and September is approaching Summer features but for minimum temperatures. Results show that there is a clear difference between IMOS and ECMWF with rates (1-9) degrees for the maximum temperatures and (1-6) degrees for the minimum temperatures.