Results 31 to 40 of about 710,395 (248)
Radar-Ray Refraction Associated with Horizontal Variations in the Refractivity [PDF]
, 1963 The relative bending effects on a radio ray of the horizontal and vertical gradient of refractivity are investigated. With the use of ray-curvature formulas developed by Wong, convenient differential equations governing the three-dimensional ray path ...
Martin, F.L. +3 more
core +3 more sources
Atmosphere, 2023 The accurate determination of Atmospheric Boundary Layer Height (ABLH) is crucial in various atmospheric studies and practical applications. In this study, we present a comprehensive comparative analysis of five distinct methods for estimating ABLH using
Cong Qiu +7 more
doaj +1 more source
Refractivity and refractivity gradient estimation from radar phase data: a least squares based approach [PDF]
Tropospheric refractivity, related to temperature, pressure, and humidity, is an interesting parameter for weather analysis, prediction, and study of climate trends. It has been shown to be useful for the detection and forecast of convective events.
Nocelo López, Rubén +9 more
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ICT Express, 2022 This article uses radiosonde data of balloons in Hanoi to determine the radio refractive index and the conditions of radio wave propagation in the atmosphere.
Chi Cong Pham, Xuan Anh Nguyen
doaj +1 more source
Columnar Radio Refractivity Of The Troposphere At Ashodi And Kano
, 2005 Spatial-temporal, distributions of columnar radio refractive index in the troposphere of two tropical stations – Kano and Oshodi are considered.
B Adeyemi, Adeyemi, B
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Investigation of the Vertical Profile Radio Refractivity Gradient and Effective Earth Radius Factor (k-factor) in Transmission Link Over Oyo, Oyo State, South Western Nigeria [PDF]
, 2022 Surface radio refractive gradient and k-factor are very imperative in observing propagation conditions, designing and planning of microwave communication links in the lower part of the atmospheric boundary layer. The measurement of weather variables (air
Suleman, Kamaldeen O +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.The influence of Fe particle size on in situ alloying of Fe–SiC powder blends in PBF‐LB/M is revealed. Contrary to expectations, the coarser Fe fraction provides a broader crack‐free processing window and slightly improved elemental homogeneity while producing higher but more variable hardness. The results highlight a complex trade‐off between particle
Anna Luise Strauch +2 more
wiley +1 more source
Scientific ReportsAtmospheric refractivity and its vertical changes play an important role in how radio waves travel, but detailed studies across different climate regions are still limited. This study provides a long-term analysis of refractivity, its vertical gradients,
Solomon O. Adeola +4 more
doaj +1 more source
Estimation of atmospheric mixing layer height from radiosonde data [PDF]
Atmospheric Measurement Techniques, 2014 Mixing layer height (h) is an important parameter for understanding the transport process in the troposphere, air pollution, weather and climate change.
X. Y. Wang, K. C. Wang
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Advanced Functional Materials, EarlyView.Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand +13 more
wiley +1 more source