Using Jinan Doppler weather radar and automatic station data, and combining the weather situation and the real weather state, the evolution characteristics of the gust front and the wind after the gust front occurred in Shandong province on 14 July 2015 were analyzed. The results showed that the wind with more than 8 grade continued more than an hour during the life cycle of the gust front, which exceeded three hours, and the measured maximum wind speed reached 24 m·s-1 (9 grade gale). During the development and vigorous stages of the gust front, the storm parameters of the strongest convective cell leading to the gust front were that maximum reflectivity factor remained at around 60 dBZ, the strong center height top was around 5 km, cell top was above 9 km, C-VIL was over 40 kg·m-2. The storms had the propagation characteristics with first left to spread then right to spread, then two storm groups were developed, which jointly maintained the development and sustainability of the gust front. The difference between the two storm groups for the echo intensity and top was not obviously, but there was larger difference among the strong winds caused by the two storm groups. The largest wind power reached 10 grade caused by the left storm groups, and the gust front ahead of them reached the largest wind power with 9 grade, but for the right storm groups, the corresponding values were 8 grade and 7 grade respectively. There was lager inflow in the lower back of the left strong storms, and the right storms did not. Strong rear inflow led storms to produce stronger sinking airflow, then to produce stronger downburst and gust front on the ground.
WU Juxiu
,
ZHOU Qing
,
YANG Chuanfeng
,
HUANG Lei
,
TU Aiqin
,
MA Chuancheng
. Analysis on the Weather Radar Products Characteristics of the Gust Front and the Wind after the Gust Front on July 14, 2015[J]. Plateau Meteorology, 2017
, 36(4)
: 1082
-1090
.
DOI: 10.7522/j.issn.1000-0534.2016.00090
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