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Determination of the evaporation duct height from standard meteorological data
Izvestiya, Atmospheric and Oceanic Physics, 2007Four models used for evaluating the height of the evaporation duct from measured atmospheric pressure, water and air temperatures, and air humidity are considered.The calculated results are compared with the duct heights measured during two oceanographic expeditions in the tropical zone of the Atlantic Ocean and the equatorial zone of the Indian Ocean.
V. K. Ivanov +2 more
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Estimating evaporation duct heights from radar sea echo
Radio Science, 2000The evaporation duct is a downward refracting layer that results from the rapid decrease in humidity with respect to altitude occurring in the atmospheric surface layer above bodies of water. The evaporation duct affects radar detection ranges at frequencies of approximately 1 GHz and above.
L. Ted Rogers +2 more
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The short-term forecasting of evaporation duct height (EDH) based on ARIMA model
Multimedia Tools and Applications, 2016The short-term prediction of EDH time series plays an exceedingly important role in several fields such as communications, navigation and so on. In this paper, an application of autoregressive integrated moving average (ARIMA) for short-term forecasting of EDH time series is presented.
Shaobo Yang +5 more
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CASPER West Evaporation Duct Height Inversion Using LATPROP-Radar
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018Refractive atmospheric conditions at low altitudes can have a significant impact on electromagnetic signal propagation in many maritime environments. For air-sea interaction research, it is crucial to characterize atmosphere boundary layer properties, specifically in this work, by utilizing radar clutter returns caused by electromagnetic ducting ...
Joshua Compalec +8 more
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X-band beacon-receiver array evaporation duct height estimation
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015Radiowave propagation in the marine atmospheric boundary layer (MABL) remains a subject of research interest given the potential utility of the ducting propagation mechanism. Ducting propagation is highly dependent on atmospheric conditions; experiments that combine propagation measurements with detailed atmospheric characterization can offer ...
Jonathan Pozderac +2 more
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A simple method to determine evaporation duct height in the sea surface boundary layer
Radio Science, 1992A formulation to determine the evaporation duct height in the sea surface boundary layer is presented. This formulation is based upon the theory of similarity of Monin Obukhov by using analytical solutions currently used in the field of numerical weather prediction.
Luc Musson‐Genon +2 more
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The Surface Evaporative Duct Height Product: An Evaluation
1987Abstract : The existence of a surface evaporative duct has many serious operational implications. One of the most serious and obvious implications is that the extended range of the radar will allow distant hostile units to detect the radar(and to be detected by the radar).
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On analyzing space-time distribution of evaporation duct height over the global ocean
Acta Oceanologica Sinica, 2016The statistical features of the evaporation duct over the global ocean were comprehensively investigated with reanalysis data sets from the National Centers for Environmental Prediction. These data sets have time and spatial resolutions of 1 h and 0.313°×0.312°, respectively.
Kunde Yang +5 more
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A Short-term Evaporation Duct Height Prediction Method Using EMD and Parameter Optimized SVR
2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2020Evaporation duct often appears in the near ground layer close to the sea surface, and it is an important factor affecting the performance of shore based, ship borne or low altitude airborne radar and communication systems. Mastering the information of evaporation duct in advance can effectively avoid the electromagnetic wave loss caused by the ...
Shuai Zhao +5 more
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A sensitivity study of weather data inaccuracies on evaporation duct height algorithms
Radio Science, 1991The sensitivity of five evaporation duct height algorithms to errors in shipboard meteorological data is examined, and the algorithms are intercompared. The data set used was generated parametrically so a large variation of environmental conditions could be considered.
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