نتایج جستجو برای: polarimetric radars
تعداد نتایج: 7449 فیلتر نتایج به سال:
The RHYTMME project (Risques HYdro-météorologiques en Territoires de Montagnes et MEditerranéens) was developed in order to establish a platform of services allowing a better management of hydrometeorological risks in the French southern Alps, which are prone to intense precipitation events and flash floods. In the frame of the RHYTMME Project, Météo France is deploying a dense network of 4 pol...
The advantages of using Doppler weather radar to track and forecast mesoscale severe weather events are widely known to both meteorologists and the public. With the use of Doppler radar, meteorologists can provide better information to the public, ultimately saving lives and property, by remotely observing the internal structure of thunderstorms at high resolution. Despite its highly advanced c...
In order to improve the understanding of microphysical characteristics raindrop size distribution (DSD) under different rainfall rates (R) classes, and broaden knowledge impact radar wavelengths R classes on QPE dual-polarization radars in Tianshan Mountains, a typical arid area China, we investigated DSD across dual-polarimetric relationships based data from PARSIVEL2 disdrometer at Zhaosu Mou...
Many studies have performed microphysical retrievals using radars of different frequencies, platforms, and methodologies. However, little is known about the consistency derived from radar platforms (i.e., airborne or spaceborne vs. ground-based) their This study first to directly compare snow mass-weighted mean diameter (Dm) both nadir-pointing multi-frequency ground-based polarimetric range-he...
The most commonly used polarimetric radar measurements in rainfall estimation are the reflectivity factor, usually at horizontal polarization (Zh), differential reflectivity (Zdr) and specific differential propagation phase (Kdp). Based on the above three measurements, a number of algorithms have been derived in the literature to estimate rainfall (see Bringi and Chandrasekar, 2001 for a summar...
There is currently widespread interest in the development of radar sensors for the detection of surface and buried targets and the remote sensing of land, sea and ice surfaces. An important feature of electromagnetic radiation is its state of polarisation and a wide range of classification algorithms and inversion techniques have recently been developed based on the transformation of polarisati...
Dual-polarization radar measurements are sensitive to hydrometeor properties such as shape, phase state, and fall behaviour (Bringi and Chandrasekar 2001) so that they can be used for hydrometeor classification purposes. The differential reflectivity (Zdr) is sensitive to the shape and orientation of precipitation particles: it can discriminate rain from spherical hail. The linear depolarizatio...
New algorithms for rain attenuation correction of reflectivity factor and differential reflectivity are presented. Following the methodology suggested for the first time by Gorgucci et al., the new algorithms are developed based on the self-consistency principle, describing the interrelation between polarimetric measurements along the rain medium. There is an increasing interest in X-band radar...
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