Share Email Print

Proceedings Paper

Mesoscale observational analysis of a strong squall line in its genesis and development over the Song-Nen plain of NE China
Author(s): Meiying Yuan; Nanping Xu; Xiaoling Zhang; Zechun Li; Jun Sun
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

A mesoscale observational analysis is performed of an event of rainstorm and intense convective weather as a robust happening during a 100-yr return period on August 10, 2006 in the Song-Nen Plain of NE China by use of minute-level automatic-station data, high-resolution satellite cloud maps, new-generation Doppler soundings and conventional observations. Results show that this event of rainstorm and robust convective weather is bound up with the genesis and development of a squall line, which causes great change in station meteorological elements on its way. At the Tailai station, for instance, precipitation is the strongest, reaching 90.8 mm/h, where temperature drops by 21.5°C, pressure rises by 4.7 hPa and winds peak between 13.3 to 22.6 m/s during the squall passage. The squall line is displayed as an elliptical MCC on satellite cloud maps and in its mature stage as a squall line on radar soundings. This squall shows a comma-form meso -β convective storm before its genesis, followed by propagation towards the southwest part of the storm and showing its bow-like echo zones followed by gradual appearance of multiple super cells, viz., multi-cell storm in the southwestern end of the echoes. These intense convective storm comprise linear strong convective echo bands, ~315 km in total length and 50 km wide, persisting for 7 hrs. When the squall line passes, there are a front low pressure, followed by a thunderstorm high pressure and a wake low differing in intensity.

Paper Details

Date Published: 10 October 2014
PDF: 11 pages
Proc. SPIE 9245, Earth Resources and Environmental Remote Sensing/GIS Applications V, 92451A (10 October 2014); doi: 10.1117/12.2065098
Show Author Affiliations
Meiying Yuan, Provincial Meteorological Observatory of Heilongjiang (China)
Nanping Xu, Heilongjiang Meteorological Administration (China)
Xiaoling Zhang, National Meteorological Ctr. of China (China)
Zechun Li, National Meteorological Ctr. of China (China)
Jun Sun, National Meteorological Ctr. of China (China)

Published in SPIE Proceedings Vol. 9245:
Earth Resources and Environmental Remote Sensing/GIS Applications V
Ulrich Michel; Karsten Schulz, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?