مقایسهٔ روش‌ها

	نمایش سرعت-زاویه سمتی	رادار دو-قطبشی	باد حرارتی
حوزه	هواشناسی	هواشناسی	هواشناسی
خانواده	Process / pipeline	Process / pipeline	Process / pipeline
سال پیدایش	1968	1990s	1920s
پدیدآور	Browning and Wexler	Bringi, Chandrasekar	Jacobbian insights from geostrophic flow
نوع	Radar wind retrieval method	Radar measurement technique	Wind-temperature relationship
منبع بنیادین	Browning, K. A., & Wexler, R. (1968). The determination of kinematic properties of a wind field using Doppler radar. Journal of Applied Meteorology, 7(1), 105-113.	Kumjian, M. R. (2013). The impact of precipitation on supercell electrification: Lightning potential and storm structure changes. Journal of the Atmospheric Sciences, 69(11), 3353-3375.	Holton, J. R. (2004). An Introduction to Dynamic Meteorology (4th ed.). Academic Press.
نام‌های دیگر	VAD, VAD analysis, Velocity-height profile	Dual-pol radar, Polarimetric radar, Dual-polarization, Dual-pol	Thermal wind, Vertical wind shear, Barotropic
مرتبط	3	3	3
خلاصه	The Velocity-Azimuth Display (VAD) is a radar analysis technique that extracts the radial velocity of wind at a constant altitude as a function of azimuth angle around the radar. By fitting a sinusoidal pattern to these measurements, VAD retrieves the mean wind speed and direction at that altitude, providing wind profiles without requiring multiple radar observations.	Dual-polarization (dual-pol) radar is a weather radar system that transmits and receives electromagnetic waves in both horizontal and vertical polarizations simultaneously. This technique, operational in weather services since the 2010s, provides detailed information about precipitation particle type, shape, and size distribution, enabling improved rainfall estimates and better discrimination of hail, rain, and snow.	The thermal wind relationship is a fundamental meteorological principle that links vertical wind shear to horizontal temperature gradients. It states that wind speed increases with height in the direction of warming—a direct consequence of hydrostatic and geostrophic balance combined with the ideal gas law.