Advances in Earth Science ›› 2013, Vol. 28 ›› Issue (3): 318-326. doi: 10.11867/j.issn.1001-8166.2013.03.0318

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Review of the Study of Atmospheric Ducts over the Sea

Cheng Yinhe 1,2 , Zhou Shengqi 1, Wang Dongxiao 1   

  1. 1.State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou510301, China; 2.Key Laboratory of Climate, Resources, and Environment in Continental Shelf Sea and Deep Sea, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang524088, China
  • Received:2012-07-10 Revised:2012-11-15 Online:2013-03-10 Published:2013-03-10

Cheng Yinhe, Zhou Shengqi, Wang Dongxiao. Review of the Study of Atmospheric Ducts over the Sea[J]. Advances in Earth Science, 2013, 28(3): 318-326.

The atmospheric duct of the troposphere comprises strong vertical refractivity gradient structures. It has great scientific significance and great value for propagations of radio waves and functions of surveillance equipments. According to the atmospheric duct types, the research methods of the atmospheric duct are reviewed. Based on the similarity theory, evaporation duct models are developed or built with dominant emphasis and applied to some local sea. The other duct-type research methods have experienced a process from simple to complex and from qualification analysis to accurate quantification. Numerical simulation with mesoscale meteorological models has become a very important method which has greatly improved the efficiency and accuracy of the atmospheric duct simulation or forecast. Based on the grid data of numerical simulation, atmospheric ducts such as duct occurrence are analyzed statistically and what weather processes or climates  that cause  them. Finally, using more meteorological methods and technology, research fields are pointed out based on the current condition of the atmospheric duct study. More hydrogeology and meteorological surveys and electromagnetic waves propagation experiments are carried out  firstly. Meanwhile mesoscale meteorological and sea-air coupled models are further used with data assimilation and ensemble prediction system in the atmospheric duct study, which improves the accuracy of the atmospheric duct over the sea.

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