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- Title
Statistical analysis and temporal trend of annual maximum temperatures of Abadan in Southwestern of Iran.
- Authors
Ghavidel Rahimi, Yousef; Ahmadi, Mahmoud
- Abstract
Human and natural physical caused climate change can affect climate extremes, as well as maximum temperatures. The variations of the interannual and interdecadal hot temperatures have been studied between 1960 and 2012 (53 years) based on Abadan annual maximum temperatures (AAMT) data. The decadal analysis of the time variations of AAMT showed a positive and ascending trend in 60d, 70d and 90d, the neutral trend in 80d, and the descending trend in the last decade of the twentieth century. The positive time variations of AAMT in the 60d and 70d are too severe and more significant than that of other decades. The analysis of relationship between the absolute AAMT and the factors such as the global annual mean land-ocean temperature index (GAMLOTI), the annual concentration of atmospheric carbon dioxide (ACD), and the summer June-July-August (JJA) index of North Atlantic Oscillation (NAO) teleconnection pattern in AAMT showed that there is a significant correlation between AAMT and the mentioned factors. Thus, the relationship between the AAMT and the GAMLOTI is significant with a correlation coefficient of 0.602 at the significant level of 0.01. ACD had a negative significant correlation ( r = 0.60), and the JJA NAO index had a negative significant correlation ( r = −0.34) with AAMT. The results of multiple regression analysis showed that the overall effect of the GAMLOTI, the annual concentration of ACD, and the JJA NAO index on the temporal variability of AAMT during a 53-year period is 46.2 %. The relationship between the AAMT and the GAMLOTI and the annual concentration of ACD represents the effects of global warming on the variability of the AAMT.
- Publication
Arabian Journal of Geosciences, 2015, Vol 8, Issue 10, p8219
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-014-1760-9