عنوان المقال عربي
التغيرات في وتيرة ومدة المرتفعات الجوية فوق مستوى الضغط 1000 في العراق للفترة (1972-2020)
Abstract
This research aims to analyze and explain the changes that occurred in the frequency and duration of residence of each air high (Siberian, European, subtropical, and subtropical), during three climate cycles expanding between (1972-2020), the duration of each cycle being (17 years). The analysis was based on Weather maps on the website of the National Oceanic and Sea Administration (NOOA) have adopted the most frequent months of air highs, which extend between (October-May) for the pressure level. Through analysis of weather maps, (2630/day) were recorded repeatedly and (6763/day) Residence time for atmospheric highs at the 1000 millibars level for the observation (12:00 GMT). The values of the first cycle were (924/day) repetition and (2385/day) residence time, while the second cycle recorded (760/day) repetition and (1958/day) Duration of residence. As for the third cycle, it recorded (946/day) repetitions and (2420/day) duration of residence. The Siberian High formed the highest pressure system affecting the climate of Iraq among the atmospheric highs studied, as it recorded a duration of residence of (2742/day) with a percentage of (40.5%), followed by the European high with a duration of residence of (1844/day) and a rate of (27.3%), then comes third the subtropical high with a duration of residence of up to (1190/day) and a rate of (17.6%), and the least recorded occurrence of the merged high among The percentage of other atmospheric highlands reached (14.6%) with survival times of (987/day).
Keywords
Highs, surface pressure, variability, frequency, duration
Recommended Citation
Al-Hassani, Mustafa Falah Obaid and Al-Sayegh, Rafid Abdul Nabi Ibrahim
(2025)
"Changes in the frequency and duration of atmospheric highs above pressure level 1000 in Iraq for the period (1972-2020),"
Uruk for Humanities: Vol. 17:
Iss.
2, Article 13.
Available at:
https://muthuruk.mu.edu.iq/journal/vol17/iss2/13
