TITLE:
Case Study on a Snowfall Event in Beijing from March 17 to 18, 2022
AUTHORS:
Xian Zhang, Guowei Shang
KEYWORDS:
Snowfall Event, Beijing, Cold Spring, Synoptic Method, Weather Evolution
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.8,
August
30,
2022
ABSTRACT: On
March 17, 2022, a city-wide snowfall occurred in Beijing, China, with
significant snowfall in Northwest China and other places. By using the surface
meteorological observation data and NCEP/NCAR reanalysis data, we carried out a
case study of a snowfall event in Beijing from March 17 to 18, 2022. Results
show that this process had the characteristics of a wide range of influence and a large range of cooling. The temperature
in the north of the middle and lower reaches of the Yangtze River changed from
an obvious high to low in the previous period, and the rain and snow in
northern China were obvious. The snowfall in Beijing is the result of the
combined influence of warm and humid air and cold air. The warm and humid air
flow from the Indo-China Peninsula all the way to the north brought
abundant water vapor and unstable energy. The southward cold air and warm and
humid air met and collided in the central and eastern part of China, and
brought about precipitation under the combined action of atmospheric
instability energy and other factors. The temperature in Beijing dropped
significantly, but it still has not reached the standard of “cold
spring” in the meteorological sense.