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| Velocity-Azimuth Display× | Termisk vind× | |
|---|---|---|
| Ämnesområde | Meteorologi | Meteorologi |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1968 | 1920s |
| Upphovsperson≠ | Browning and Wexler | Jacobbian insights from geostrophic flow |
| Typ≠ | Radar wind retrieval method | Wind-temperature relationship |
| Ursprungskälla≠ | 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. DOI ↗ | Holton, J. R. (2004). An Introduction to Dynamic Meteorology (4th ed.). Academic Press. link ↗ |
| Alias | VAD, VAD analysis, Velocity-height profile | Thermal wind, Vertical wind shear, Barotropic |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | 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. | 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. |
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