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- Title
Analyzing the Long-Term Changes in the Mediterranean-Red Sea Hybrid System.
- Authors
Poorkarim, Roya; Asakereh, Hossein; Faraji, Abdolah; Khosravi, Mahmood
- Abstract
Different pressure centers and synoptic systems affect Iran's climate, and their changes can have significant climatic consequences. In this research, the trend of long-term changes in the number of coupled low-pressure of Mediterranean -Red Sea, as coupled low-pressure centers effective on Iran's rainy climate, was investigated. For this purpose, the geopotential height data of 1000 hp for the 40-year statistical period from 1987 to 2018 was extracted from the European Medium-Term Weather Forecast Center (ECMWF). In total, during this period, 97 low-pressure centers of the Mediterranean-Red Sea circulation were formed over the region. Based on the non-parametric method of chi-square test (chiscore), the trend of cyclone frequency changes was investigated. The results showed that during the investigated period, the number of coupled low-pressure of Mediterranean -Red Sea did not experience statistically significant changes in terms of decades and two semi-statistics. In examining changes on a smaller scale, cross-sectional changes were observed in four-year and two-year periods.
- Subjects
CYCLONES; CHI-squared test; WEATHER forecasting; HYBRID systems; ATMOSPHERIC troughs
- Publication
Geography & Development Iranian Journal / Jughrāfiyā va Tusi̒ah, 2023, Vol 21, Issue 73, p143
- ISSN
1735-0735
- Publication type
Article
- DOI
10.22111/GDIJ.2023.45588.3522