2014年3月17日黄海和东海一次海雾事件的观测和模拟研究

IF 2.4 4区 地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES
Jibing Guo , Jie Xu , Xiangming Xu
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引用次数: 1

摘要

利用MODIS卫星影像、天气图、客观再分析资料、观测资料和台站探测资料,分析了2014年3月17日发生在黄海和东海的一次海雾事件。记录了这次海雾事件发展和消散阶段的探测剖面、天气情况和相关气象因子。采用天气研究预报(WRF)模式对此次海雾进行了模拟。分析了该雾事件不同阶段的模拟水平大气能见度、云水、湿度和垂直风廓线。在海雾发展过程中,黄海上空出现了一个16 ~ 18 ms-1的偏南低空急流、一个逆温层和一个冷中心。雾区相对湿度在95%以上。东海比湿度高于黄海。大雾区以偏南风为主。但在海雾消散阶段,西风取代了南风,低层偏南风急流消失。山东半岛上空形成干燥气区并向东移动。WRF模拟结果表明,模拟的大气水平能见度和云水与MODIS卫星影像基本一致。云水大部分集中在200-400 m以下,雾区南部云水延伸高度高于北部。而空气温度和露点温度与海面温度接近。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An observational and modeling study of a sea fog event over the yellow and east China seas on 17 March 2014

The Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery, weather charts, objectively reanalyzed data, the observational data and station sounding data were analyzed to investigate a sea fog event occurred over the Yellow and East China Seas on March 17, 2014. The sounding profiles, weather situations and the related meteorological factors during the development and dissipation stages of this sea fog event were documented. Weather Research Forecast (WRF) model was applied to simulate this sea fog case. The simulated horizontal atmospheric visibility, cloud water, humidity, and vertical wind profile during the different stages of this fog event were analyzed. During the development stage of this sea fog, a southerly lower-jet with 16–18 ms-1, an inversion layer and a cold center over the Yellow Sea were detected. The relative humidity in the fog area was above 95%. The specific humidity over the East China Sea was higher than that over the Yellow Sea. Southerly was dominated in fog area. However, during the dissipation stage of this sea fog, westerly replaced the southerly and at the lower level, southerly jet disappeared. A dry air area formed over the Shandong Peninsula and moved eastwards. Moreover, the WRF modeling result showed that the simulated atmospheric horizontal visibility and cloud water were approximately consistent with the MODIS satellite imagery. Most of cloud water concentrated below 200–400 m, and the cloud water in the southern part of fog area extended to a higher height than the northern part. While both of air temperature and dew-point temperature were close to sea surface temperature.

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来源期刊
Tropical Cyclone Research and Review
Tropical Cyclone Research and Review METEOROLOGY & ATMOSPHERIC SCIENCES-
CiteScore
4.60
自引率
3.40%
发文量
184
审稿时长
30 weeks
期刊介绍: Tropical Cyclone Research and Review is an international journal focusing on tropical cyclone monitoring, forecasting, and research as well as associated hydrological effects and disaster risk reduction. This journal is edited and published by the ESCAP/WMO Typhoon Committee (TC) and the Shanghai Typhoon Institute of the China Meteorology Administration (STI/CMA). Contributions from all tropical cyclone basins are welcome. Scope of the journal includes: • Reviews of tropical cyclones exhibiting unusual characteristics or behavior or resulting in disastrous impacts on Typhoon Committee Members and other regional WMO bodies • Advances in applied and basic tropical cyclone research or technology to improve tropical cyclone forecasts and warnings • Basic theoretical studies of tropical cyclones • Event reports, compelling images, and topic review reports of tropical cyclones • Impacts, risk assessments, and risk management techniques related to tropical cyclones
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