Identification of Southern Low Pressure Systems

Document Type : Original Article

Authors

1 Ph. D. Candidate of Meteorology, Atmospheric Science and Meteorological Research Center (ASMERC)

2 Assistant Professor of Atmospheric Science and Meteorological Research Center (ASMERC)

3 Associate Professor of Atmospheric Science and Meteorological Research Center (ASMERC)

Abstract

In this study, using the theoretical basis, an algorithm was designed to identify southern system for the period of 1986-2015 which led to identification of 158 southern low pressure systems. Then two of them were selected for synoptic and dynamic analysis.
According to the results, the designed algorithm has ability to identify southern systems. The results showed that formation and structure of southern low pressure systems were very similar to mid-latitude weather systems and differed from thermal low pressure systems. Strong baroclinicity, strong temperature advection in low levels, cold pool in mid-levels and cyclonic circulation in air columns are the most important characteristics of southern low pressure systems that are basically different from thermal low pressure systems.

Keywords

Journal of Climate Research
Volume 1396, Issue 31 - Serial Number 31
Vol. 8, No. 31 & 32, Autumn 2017 & Winter 2018
October 2017
Pages 37-54

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