Characteristics of the boundary layer structure of sea fog on the coast of Southern China

被引:0
作者
Huijun Huang
Hongnian Liu
Weimei Jiang
Jian Huang
Weikang Mao
机构
[1] Nanjing University,School of Atmospheric Sciences
[2] China Meteorological Administration,Key Open Laboratory for Tropical Monsoon and Joint Open Laboratory of Marine Meteorology, Guangzhou Institute of Tropical and Marine Meteorology
来源
Advances in Atmospheric Sciences | 2011年 / 28卷
关键词
coast of Southern China; sea fog; boundary layer structure; advection; radiation; turbulence;
D O I
暂无
中图分类号
学科分类号
摘要
Using boundary layer data with regard to sea fog observed at the Science Experiment Base for Marine Meteorology at Bohe, Guangdong Province, the structure of the atmospheric boundary layer and the characteristics of the tops of the fog and the clouds were analyzed. In addition, the effects of advection, radiation, and turbulence during sea fog were also investigated. According to the stability definition of saturated, wet air, the gradient of the potential pseudo-equivalent temperature equal to zero was defined as the thermal turbulence interface. There is evidence to suggest that two layers of turbulence exist in sea fog. Thermal turbulence produced by long-wave radiation is prevalent above the thermal turbulence interface, whereas mechanical turbulence aroused by wind shear is predominant below the interface. The height of the thermal turbulence interface was observed between 180 m and 380 m. Three important factors are closely related to the development of the top of the sea fog: (1) the horizontal advection of the water vapor, (2) the long-wave radiation of the fog top, and (3) the movement of the vertical turbulence. Formation, development, and dissipation are the three possible phases of the evolution of the boundary-layer structure during the sea fog season. In addition, the thermal turbulence interface is the most significant turbulence interface during the formation and development periods; it is maintained after sea fog rises into the stratus layer.
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页码:1377 / 1389
页数:12
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  • [1] Deardorff J.W.(1980)Cloud top entrainment instability J. Atmos. Sci. 37 131-147
  • [2] Findlater J.(1989)The haar of north-east Scotland Quart. J. Roy. Meteor. Soc. 115 581-608
  • [3] Roach W.(2007)A heavy sea fog event over the Yellow Sea in March 2005: analysis and numerical modeling Adv. Atmos. Sci. 24 65-81
  • [4] McHugh B.(2007)Fog research: A review of past achievements and future perspectives Pure Appl. Geophys. 164 1121-1159
  • [5] Gao S. H.(2006)Numerical experiments with the advection, turbulence and radiation effect in the sea fog formation process Adv. Marine Sci. 24 156-165
  • [6] Lin H.(2009)Microphysical characteristics of the sea fog in Maoming area Acta Oceanologica Sinica 31 17-23
  • [7] Shen B.(2010)Characteristics of liquid water content of sea fog in Maoming area and its relationship with atmospheric horizontal visibility Acta Oceanologica Sinica 32 40-53
  • [8] Fu G.(2010)Turbulence heat exchange in a warm sea fog event on the coast of the South China Chinese J. Atmos. Sci. 34 715-725
  • [9] Gultepe I.(2001)Transition of stratus into fog along the California coast: Observations and modeling J. Atmos. Sci. 58 1714-1731
  • [10] Hu R. J.(1994)Fog on the United States west coast: A review Bull. Amer. Meteor. Soc. 75 229-240