Prominent mode of summer surface air temperature variability and associated circulation anomalies over the Arabian Peninsula
Yadav, Ramesh Kumar
Kunchala, Ravi Kumar
Dasari, Hari Prasad
KAUST DepartmentApplied Mathematics and Computational Science Program
Biological and Environmental Sciences and Engineering (BESE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Earth Fluid Modeling and Prediction Group
Earth Science and Engineering Program
Physical Science and Engineering (PSE) Division
Red Sea Research Center (RSRC)
Online Publication Date2018-10-15
Print Publication Date2018-11
Permanent link to this recordhttp://hdl.handle.net/10754/629399
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AbstractThis study investigates the dominant modes of surface air temperature (SAT) variability and associated circulation changes over the Arabian Peninsula (AP) during summer for the period 1979–2016 based on an empirical orthogonal function (EOF) analysis. The analysis results reveal that the first leading EOF mode is related to the weakening of the subtropical westerly jet stream, which may impact the AP temperature variability through the mid-latitude Rossby wave trains (successive troughs and ridges). This can be explained by the high correlation of the AP summer temperatures with the quasi-stationary mid-latitude/extratropical Eurasian Rossby wave train type patterns, which influences the air temperature variability by modulating the Asian Jets. Furthermore, the high AP SAT variability is also closely associated with strong middle to lower tropospheric descent (subsidence) anomalies, which cause warm temperature anomalies over this region.
CitationAttada R, Yadav RK, Kunchala RK, Dasari HP, Knio O, et al. (2018) Prominent mode of summer surface air temperature variability and associated circulation anomalies over the Arabian Peninsula. Atmospheric Science Letters: e860. Available: http://dx.doi.org/10.1002/asl.860.
SponsorsThis research work was supported by the King Abdullah University of Science and Technology (KAUST), Saudi Arabia and the Saudi ARAMCO-KAUST Marine Environmental Research Center (SAKMERC). The authors would like to thank the anonymous reviewers and Associate Editor for their insightful comments.
JournalAtmospheric Science Letters
CollectionsArticles; Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC); Applied Mathematics and Computational Science Program; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
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