Results 41 to 50 of about 4,721 (271)

A New Model of the Oceanic Evaporation Duct [PDF]

Journal of Applied Meteorology, 1997
Failure to consider anomalous propagation of microwave radiation in the troposphere may result in erroneous meteorological radar measurements. The most commonly occurring anomalous propagation phenomenon over the ocean is the evaporation duct. The height of this duct is dependent on atmospheric variables and is a major input to microwave propagation ...
Steven M. Babin, George S. Young, James A. Carton   +2 more
openaire   +1 more source

Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel

Results in Engineering, 2021
Safe transport of pressurized CO2 requires a profound knowledge of the processes' effect during the phase transition on catastrophic failure of a tanker filled with liquid CO2.
Osama M. Ibrahim, Per Morten Hansen, Dag Bjerketvedt, Knut Vågsæther   +3 more
doaj   +1 more source

Research on a Multimodel Fusion Diagnosis Method for Evaporation Ducts in the East China Sea

Sensors, 2023
Evaporation ducts are abnormal states of the atmosphere in the air–sea boundary layer that directly affect the propagation trajectory of electromagnetic (EM) waves.
Cheng Zhang, Zhijin Qiu, Chen Fan, Guoqing Song, Bo Wang, Tong Hu, Jing Zou, Zhiqian Li, Sheng Wu   +8 more
doaj   +1 more source

A Comprehensive Study on Maximum Wavelength of Electromagnetic Propagation in Different Evaporation Ducts

IEEE Access, 2019
The maximum wavelength describes trapping features when considering electromagnetic wave propagation in an evaporation duct. However, the results vary between the existing methods used to calculate the maximum wavelength in an evaporation duct.
Yang Shi, Qi Zhang, Shuwen Wang, Kunde Yang, Yixin Yang, Xidang Yan, Yuanliang Ma   +6 more
doaj   +1 more source

Optimization design of duct fan and evaporator module in refrigeration system with heat exchange and fan power

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
Since the evaporator system has been wildly applied in industry, its operating performance needs to be optimized to reduce energy consumption. Considering the evaporator, duct and fan as basic module, the matching relationship of these components must be
Qingdi KE, Songbai SHANG, Feng JIANG, Haihong HUANG, Bangfu WEI   +4 more
doaj   +1 more source

Long-term over-the-horizon microwave channel measurements and statistical analysis in evaporation ducts over the Yellow Sea

Frontiers in Marine Science, 2023
Maritime high-speed over-the-horizon wireless communication is realizable through evaporation ducts. Detailed measurement, analysis, and modeling of duct channels are essential for application of this communication technique.
Shuwen Wang, Shuwen Wang, Shuwen Wang, Kunde Yang, Kunde Yang, Kunde Yang, Yang Shi, Yang Shi, Hao Zhang, Hao Zhang, Fan Yang, Fan Yang, Fan Yang, Dawei Hu, Dawei Hu, Dawei Hu, Guoyu Dong, Guoyu Dong, Guoyu Dong, Yihang Shu, Yihang Shu, Yihang Shu   +21 more
doaj   +1 more source

Regional Spatiotemporal Statistical Database of Evaporation Ducts Over the South China Sea For Future Long-Range Radio Application

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
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, Yafei Shi, Jian Wang, Feng Feng   +3 more
doaj   +1 more source

Evaporation duct effects on sea clutter [PDF]

IEEE Transactions on Antennas and Propagation, 1990
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 ( >
openaire   +2 more sources

Analysis of the accuracy of using ERA5 reanalysis data for diagnosis of evaporation ducts in the East China Sea

Frontiers in Marine Science, 2023
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, Zhijin Qiu, Cheng Zhang, Cheng Zhang, Bo Wang, Tong Hu, Jing Zou, Zhiqian Li, Shizhe Chen, Sheng Wu   +9 more
doaj   +1 more source

Statistical Analysis of the Quantified Relationship between Evaporation Duct and Oceanic Evaporation for Unstable Conditions

, 2017
An analysis is conducted for the first time to statistically quantify the relationship between the evaporation duct and oceanic evaporation. Through sensitivity analysis, under unstable conditions (air–sea temperature difference less than zero ...
Qi Zhang, Qiulong Yang, Kunde Yang
core   +1 more source