TITLE:
Characteristics of Dry Cold Air Intrusion in a Typical Strong Storm
AUTHORS:
Yanjing Tang, Bo Liao, Tao Wei
KEYWORDS:
Strong Storm, Dry Cold Air, Storm Intensity
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.7 No.4,
April
28,
2019
ABSTRACT: Taking a typical strong storm in Guizhou on April 5, 2017 for example, the
diagnosis analysis used the water vapor cloud and the initial field of EC thin
grid, including physical quantity, surface and upper air meteorological observation,
as well as radar observation data. For the environment parameter
analysis, small CAPE value tended to underestimate storm intensity on potential
forecast stage, strong vertical wind shear revealed the strong dry cold air
was the important intensity factors of the storm. The water vapor cloud map
can be used to monitor the most important features, the dry zone, the wet zone
and the boundary between them. When dry intrusion is found, it can be used as
one of the bases for the development of heavy rain. Dry cold air intrusion on
high-level was traced by water vapor images. And in this process, the analyses
revealed the role of dry cold air’s influence on intensity of the storm.