Skip to content
Journal article

Sand/dust storm processes in Northeast Asia and associated large-scale circulations

Yang Y, Hou Q, Zhou C, Liu H, Wang Y, Niu T ...see all

Atmospheric Chemistry and Physics, vol. 8, issue 1 (2008) pp. 25-33

  • 11

    Readers

    Mendeley users who have this article in their library.
  • Citations

    Citations of this article.
  • Views

    ScienceDirect users who have downloaded this article.
Sign in to save reference

Abstract

This paper introduces a definition of sand/dust storm process as a new standard and idea of sand/dust storm (SDS) groups a number of SDS-events in Northeast Asia. Based on the meteorological data fromWMO/GOS network, 2456 Chinese surface stations and NCEP-NCAR reanalysis, the sand/dust storm processes in Northeast Asia in spring 20002006 are investigated. And the evolutions of anoma- lies of general circulation in the troposphere are analyzed by comparing the spring having most and least occurrences of SDS in year 2006 and 2003. Associated with the notice- ably increased occurrence of SDS processes in spring 2006, the anomalies in 3-D structure of general circulation espe- cially in the mid-and high latitudes of the Northen Hemi- sphere (NH) are revealed. The transition period from the winter of 2005 to spring 2006 has witnessed a fast-developed high center over the circumpolar vortex area in the upper tro- posphere, which pushes the polar vortex more southwards to mid-latitudes with a more extensive area over the east NH. In spring 2006, there are the significant circulation anomalies in the middle troposphere from the Baikal Lake to northern China with a stronger southward wind anomaly over North- east Asia. Compared with a normal year, stronger meridional wind with a southward wind anomaly also in the lower tropo- sphere prevail over the arid and semiarid regions in Mongolia and northern China during spring 2006. The positive anoma- lies of surface high pressure registered an abnormal high of 410 hPa in the Tamil Peninsular make a stronger cold air source for the repeated cold air outbreak across the desert ar- eas in spring 2006 resulting in the most frequent SDS seasons in the last 10 years in Northeast Asia.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • Y. Q. Yang

  • Q. Hou

  • C. H. Zhou

  • H. L. Liu

  • Y. Q. Wang

  • T. Niu

Cite this document

Choose a citation style from the tabs below