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  4. Vol 6, Issue 5, 2022

Monitoring and Analysis of a Persistent Sea Fog in Qiongzhou Strait

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DOI: 10.23977/erej.2022.060506 | Downloads: 15 | Views: 574

Author(s)

Chenxiao Shi 1,2, Chunxiang Shi 3, Honghui Zheng 1,2, Liu Yang 4

Affiliation(s)

1 Hainan Meteorological Information Center, Haikou, Hainan, China
2 Hainan Key Laboratory of Meteorological Disaster Prevention and Mitigation in the South China Sea, Haikou, Hainan, China
3 National Meteorological Information Center, Beijing, China
4 Xinjiang Bazhou Meteorological Bureau, Xinjiang, Kulle, China

Corresponding Author

Chunxiang Shi

ABSTRACT

From January 21 to January 27, 2021, there was a continuous foggy weather process in Qiongzhou Strait, which caused ships to stop sailing and a large number of passengers and vehicles to stay. Based on the data of laser visibility radar and FY-4A multi-channel scanning imager, combined with multi-source data fusion products independently developed by China, reanalysis data and observation data, this paper analyzes the process and causes of the formation of this sea fog from the atmospheric and ocean conditions, and draws the following conclusions: 1) Cooling and humidifying and low wind speed are the basic conditions for the generation and development of sea fog, while the inversion layer near 700-850hpa provides a better background environment for the generation and maintenance of sea fog; 2) Due to the influence of different weather systems in the two periods before and after the whole sea fog generation and development process, the generation and development orientation and moving direction of sea fog in the two periods before and after are different, resulting in two different types of sea fog, radiation fog and advection fog; 3) There is a certain temperature difference between the sea temperature near the coast of South China and the large warm sea area east of Qiongzhou Strait, which provides the background field and hydrological conditions for the formation of sea fog. In addition, the wind field determines the transportation and accumulation of heat, which blows the warm ocean currents to the near-shore cold sea area, thus causing the sea temperature difference. The sea fog can be developed and maintained by cooling and humidifying.

KEYWORDS

Qiongzhou Strait; Persistent sea fog; Atmospheric and marine conditions; variety of observation data; Persistent fog; Surface sea temperature

CITE THIS PAPER

Chenxiao Shi, Chunxiang Shi, Honghui Zheng, Liu Yang, Monitoring and Analysis of a Persistent Sea Fog in Qiongzhou Strait. Environment, Resource and Ecology Journal (2022) Vol. 6: 38-52. DOI: http://dx.doi.org/10.23977/erej.2022.060506.

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