摘要
利用天津WRF中尺度数值预报业务模式,对2013年11月24—25日一次爆发性气旋过程进行数值模拟,模拟方案分别为:控制实验(ctrl)、将整体黄渤海下垫面变为陆地实验(land)、将122°E以西的渤海海洋下垫面变为陆地实验(land-122)、将122°E以东到黄海中部的海洋下垫面变为陆地实验(land+122)。结果表明:将黄渤海海域全部转换成陆地后,气旋中心海平面气压场最大值升高5 hPa。10 m风场减弱最大值出现在气旋中心,可达19 m/s,下垫面对气旋的影响主要在强度和风力大小的变化。黄海海域风力减小普遍超过10 m/s。将122°E西部的渤海转换成陆地后,渤海海域风速最大值减小了12 m/s。黄海海域的气旋中心部分风力有微弱变化,气旋中心风力稍有增大,最大增加了4 m/s。将122°E东部的黄海转换成陆地后,海平面气压场的变化与land实验接近,10 m风场在黄海南部风力略高于land实验。
Using the Tianjin Weather Research and Forecasting mesoscale numerical prediction model,a numerical simulation is conducted for an explosive cyclone over the Yellow Sea and Bohai Sea on 24 to 25 November 2013.The sensitive experiments are designed as follows:control run(ctrl),turn the overall underlying surface of the Yellow Sea and Bohai Sea into land(land),turn the underlying surface of the Bohai sea west of 122°E into land(land-122),turn the underlying surface of the Bohai sea east of 122°E into land(land+122).The results show that the maximum sea level pressure in the center of the cyclone increased by 5 hPa in experiment(land).The largest decrease of 10 m wind speed occurs in the center of the cyclone with a maximum of 10 m/s.The underlying surface mainly influence the intensity and wind speed of the cyclones.The wind speed in the Yellow Sea generally decreases by over 10 m/s.The wind speed in the Bohai Sea decreased up to 12 m/s in experiment(land-122).The wind speed in the center of the cyclone increases slightly in the Yellow Sea with a maximum increase of 4 m/s.The change of sea level pressure field in experiment(land+122)is close to that in the land experiment,while the 10 m wind speed in the southern Yellow Sea is slightly higher than that in the experiment(land).
作者
朱男男
王雪莲
马建铭
ZHU Nan-nan;WANG Xue-lian;MA Jian-ming(Tianjin Marine Meteorological Centre,Tianjin 300074 China;Tianjin Key Laboratory for Oceanic Meteorology,Tianjin 300074 China;Tianjin Institute of Meteorology,Tianjin 300074 China)
出处
《海洋预报》
CSCD
北大核心
2020年第4期97-104,共8页
Marine Forecasts
基金
国家自然科学基金(41675046)
中国气象局预报员专项(CMAYBY2019-008)
天津科委基金(16JCYBJC21500)
天津市科技计划项目(18ZXAQSF00130)。
关键词
数值模拟
下垫面
黄渤海
爆发性气旋
numerical simulation
underlying surface
the Yellow Sea and Bohai Sea
explosive cyclone
