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Proceedings Paper

Applying of helicity in an analysis of a severe sandstorm
Author(s): Jian-hong Tao; Jin-song Wang; Jian-ying Feng; Yue Chang; Xiao-li Liu
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Paper Abstract

The helicity of a severe sandstorm happened in Northwest China was analyzed by using global reanalysis grid data of NCEP/NCAR for 4 times a day. As an important physical parameter in analyzing and predicting severe convective weather, the helicity also has good indication in the forecasting of sandstorm. The distribution of helicity over the sandstorm area was negative at higher levels and positive at lower levels. There was definite relationship between the evolvement of helicity's negative value at higher levels and the occurrence of sandstorm.

Paper Details

Date Published: 29 August 2005
PDF: 7 pages
Proc. SPIE 5890, Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring, 58901C (29 August 2005); doi: 10.1117/12.614768
Show Author Affiliations
Jian-hong Tao, Nanjing Univ. of Information Science and Technology (China)
Lanzhou Ctr. Meteorological Observatory (China)
Jin-song Wang, Institute of Arid Meteorology, CMA (China)
Jian-ying Feng, Institute of Arid Meteorology, CMA (China)
Yue Chang, Nanjing Univ. of Information Science and Technology (China)
Institute of Tropical and Marine Meteorology, CMA (China)
Xiao-li Liu, Nanjing Univ. of Information Science and Technology (China)


Published in SPIE Proceedings Vol. 5890:
Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring
Hung-Lung Allen Huang; Hal J. Bloom; Xiaofeng Xu; Gerald J. Dittberner, Editor(s)

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