TITLE:
The Spatial-Temporal Characteristics of Meteorological Disasters in the Southwest Region of Zhejiang Province during 1953-2022
AUTHORS:
Qi Zhang, Yifan Wang, Zhidan Zhu, Hongxia Shi, Wenhao Yang, Shujie Yuan
KEYWORDS:
Southwest of Zhejiang Province, Rainstorm, Cold Wave, Spatial Distribution, Trend Analysis
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.12 No.3,
March
21,
2024
ABSTRACT: Meteorological disasters are some of the most serious and costly natural
disasters, which have larger effects on economic and social activity. Liuchun Lake
is an ecotourism area in the southwest region of Zhejiang province, where also
has experienced meteorological disasters including rainstorm and cold wave.
Understanding the temporal-spatial characteristics of meteorological disasters
is important for the local tourism and economic development. Based on the daily
temperature and precipitation from 18 meteorological stations in the southwest
of Zhejiang province during 1953-2022 and some statistical approaches, the
temporal and spatial characteristics of meteorological disasters (Freezing,
Rainstorm, Cold wave) are analyzed. The results indicate that 1) Rainstorm
occurred frequently around the Liuchun lake, the frequency was about 8 times/a,
it can also reach about 3 times/a in the other region. Freezing and cold wave (including
strong cold wave and extremely cold wave) had the same spatial distribution as
rainstorm, however, except for Liuchun lake, they occurred less than one time
in the other regions; 2) The trend of rainstorm had larger spatial difference, it increased in all
the study area, but it increased more significantly around the study area than
around Liuchun lake. Freezing was on the downtrend in the whole region, with
93.3% of the stations passed the 95% significant level. Cold wave also showed a
declined trend, but it was insignificantly at most of the stations, only 33% of
the stations passed the 90% significant level. Compared with cold wave, strong
cold wave and extremely strong cold wave had weaker decline in all the regions.
In general, from 1953 to 2022 rainstorm showed an increasing trend, it was the
main meteorological disaster in the study area, cold wave displayed a
decreasing trend, but it still occurred about 2 - 3
times/a in most regions.