Seasonal variation of Middle East jet stream and its thermal mechanism

Author

Pan, Aoda ; Ni, Donghong ; Sun, Zhaobo ; Li, Zhongxian ; Zeng, Gang

Author_Institution

Key Lab. of Meteorol. Disaster of Minist. of Educ., Nanjing Univ. of Inf. Sci. & Technol., Nanjing, China

fYear

2011

fDate

26-28 March 2011

Firstpage

472

Lastpage

475

Abstract

Based on the annual average NCEP/NCAR reanalysis data, the seasonal variation characteristics of intensity and location of the Middle East jet stream (MEJS) and their relations with the South-North temperature differences (SNTD) are discovered. Results show that the intensity and location of MEJS have obvious seasonal variation characteristics. MEJS is stronger and locates in 27.5°N from November to the next April. MEJS is weaker from May to October and moves northeastward after May with its center maintaining over about 40°N from June to September. The seasonal variation characteristics of intensity and location of MEJS are significant with good corresponding relations to SNTD averaged from 500 to 200 hPa. It shows that the seasonal adjustment of SNTD has important effects on the seasonal variations of intensity and location of MEJS.

Keywords

atmospheric temperature; jets; wind; MEJS; Middle East jet stream intensity; Middle East jet stream location; Middle East jet stream seasonal variation; SNTD; annual average NCEP-NCAR reanalysis data; pressure 500 hPa to 200 hPa; south-north temperature differences; thermal mechanism; Facsimile; Nonhomogeneous media; Spatiotemporal phenomena;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Technology (ICIST), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9440-8

Type

conf

DOI

10.1109/ICIST.2011.5765293

Filename

5765293