TITLE:
Analysis of a Snowfall Process in North China during February 12-13, 2022
AUTHORS:
Weibo Shan
KEYWORDS:
Vortex, Trough, Snowfall, Numerical Reconstruction
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.10,
October
31,
2022
ABSTRACT: This
research analyzed a snowfall process in north China during February 12-13,
2022. By using synoptic and numerical analysis, it is concluded that this
snowfall process was mainly caused by trough, low-level vortex, shear line and
Siberian High. Meanwhile, an easterly wind that transports water vapor from the
Bohai to North China, was the water resource of the snowfall process. Relative humidity
in the low atmosphere was above 80%, providing an excellent humidity condition
for snowfall. Positive vorticity and convergence induced upward motion, which
offered conditions for snowfall. Numerical reconstruction is also used to show
the range and the intensity of the snowfall process.