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Based in the approach given above, we analyzed full polarimetric SAR images, the buoy measurements of surface wind vectors and high-frequency radar measurements of ocean surface currents to investigate the effect of the currents on the retrieved SAR winds. We will show that sea surface currents ar...
Updated10 minutes ago 27 °C Clear Feels29 H:32°L:24° Hourly Full 72 hours Radar Map See all maps Detailed Observations November 28, 2024 Sunrise 6:03AM Sunset 5:33PM Wind 24 km/h NE Gust: 36 km/h Pressure 101 ↓kPa LowHigh ...
1991). Hydrodynamic modulation of the surface roughness resulting from wave-current interaction makes possible the observation of oceanic features such as current fronts, eddies, and internal waves. Recent research activities have led to progress in more emerging SAR applications, such as Doppler-based...
Keywords: Doppler scatterometer; winds; surface currents; wind work 1. Introduction Wind work at the air–sea interface is the transfer of kinetic energy between the ocean and the atmosphere, which is a fundamental driver of ocean circulation [1]. Recent estimates from global coupled ocean–atmo...
Based on the Doppler velocity, the derived radar reflectivity was classified as low-and high-rain cases. This model paved the way for blending reflectivity and attenuation to predict the rain rate. However, beyond reflectivity and attenuation, other factors, such as seasonal variation and rain ...
2.2.1. Delay–Doppler Mapping The delay–Doppler imaging technique was first proposed by [14] in 1960, and subsequently, detailed by [46] in 1974. The Moon, being a rigid body, has surface features that remain fixed to each other. When radar signals probe the lunar surface, the reflected...
Figure 2. The past and current radar altimeter missions with an orbit poleward of 72∘∘N and separated into traditional low-resolution measurement (LRM) and synthetic aperture radar (SAR), otherwise known as delay-Doppler altimeters (DDA): Years of mission launch and end are highlighted; ...
This interpretation is valid when the wave frequency in the plasma rest frame is much less than the Doppler frequency due to spacecraft motion across the horizontal spatial structure. Assuming a local thermodynamic equilibrium, the magnetic field perturbations are anticorrelated with variations in ...