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Evaporation duct assessment from meteorological buoys [PDF]
The evaporation duct over the sea is usually assessed using bulk meteorological measurements. This paper investigates the utility of meteorological buoys as a source for these bulk measurements and compares evaporation duct assessments using two buoys in southern California waters separated by 128 km.
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To fully grasp the characteristics and provide a basis for establishing an evaporation duct communication system for the South China Sea (SCS), we constructed a regional statistical database based on remote sensing meteorological parameters and a ...
Cheng Yang +3 more
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Evaporation duct effects on sea clutter [PDF]
Existing sea clutter models are in general agreement on the trends and magnitudes of sea reflectivity at low (1 degrees -10 degrees ) grazing angles. However, at extremely low grazing angles ( >
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Frequency diversity effects of evaporation duct propagation [PDF]
A comparison of 3, 9.6, and 18-GHz low-altitude over-the-horizon propagation (as influenced by the evaporation duct) is presented. Theoretical and experimental results are given for a 35-km over-water path, where the transmitters were located about 5 m above mean sea level and the receivers were located either 4-5 m or 18-19 m above sea level.
H.V. Hitney, L.R. Hitney
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Estimating Range-Dependent Evaporation Duct Height
AbstractThe refractivity from clutter (RFC) technique has been proved to be an effective way to estimate atmospheric duct structure. An important issue for RFC is how to make the estimate more robust, especially in range-dependent ducting conditions. Traditionally, statistical inversion methods need a large number of forward propagation model runs to ...
Xiaofeng Zhao +3 more
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Evaporation ducts are a phenomenon that occurs with extremely high frequency at the boundary between the atmosphere and the ocean. Because they directly affect the propagation of electromagnetic waves, it is necessary to study their various ...
Zhijin Qiu +9 more
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Evaporation Duct Height Nowcasting in China’s Yellow Sea Based on Deep Learning
The evaporation duct is a weather phenomenon that often occurs in marine environments and affects the operation of shipborne radar. The most important evaluation parameter is the evaporation duct height (EDH).
Jie Han +7 more
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The evaporation duct (ED) is generated by the evaporation of seawater and can be an influential factor of electromagnetic (EM)-wave propagation. Rainfall also affects atmospheric factors and EM-wave propagation.
Fan Yang +5 more
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The evaporation duct is a particular type of atmospheric structure that always appears on the open ocean. Predicting the evaporation duct height (EDH) accurately and in a timely manner is of great significance for the practical application of marine ...
Qi Zhang, Xi Chen, Fuyu Yin, Fei Hong
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Nanoscale‐grooved indium gallium oxide (IGO) semiconductors, patterned via thermal nanoimprint lithography (NIL) using CD/DVD templates, are integrated into electrolyte‐gated transistor biosensors to overcome Debye length limitations. Precisely engineered concave–convex nanostructures modulate local electrostatic potentials, extend the effective Debye ...
Jong Yu Song +5 more
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