Attenuation and Differential Attenuation of 5-cm-Wavelength Radiation in Melting Hail
Citations
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103 citations
Cites methods or result from "Attenuation and Differential Attenu..."
...Borowska et al. (2011) and Ryzhkov et al. (2011) accounted for these characteristics of melting hail in their polarimetric emulator by utilizing linear approximations between the aspect ratio of a dry hailstone and that of a raindrop into which it eventually melts, based on the laboratory…...
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...These findings extend the arguments of previous studies investigating the size-sorting mechanism in the development of the ZDR arc by implicating sorting of hail and graupel over that of rain....
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92 citations
Cites background from "Attenuation and Differential Attenu..."
...This result is likely due to the fact that secondary effects (such as roughness of hailstones or abrupt changes in the shape of the particles during collisions) that lead to possible reductions of rhv are not accounted for in the models (Mirkovic et al. 2013). Nonuniform beamfilling resulting from strong vertical gradients of radar variables in severe convective storms is another possible reason for additional reduction of rhv (Ryzhkov 2007). Picca and Ryzhkov (2012) showed that the depression of rhv above the melting layer in the area of major hail growth between 2108 and 2208C may indicate the presence of giant hail with sizes exceeding 5 cm that usually grows in the wet regime....
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83 citations
Additional excerpts
...Because phase measurements are unaffected by attenuation, ΦDP is extremely useful for correction of attenuation and differential attenuation (e.g., Bringi et al. 1990; Testud et al. 2000; Snyder et al. 2010; Borowska et al. 2011; Gu et al. 2011)....
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...Because phase measurements are unaffected by attenuation, ΦDP is extremely useful for correction of attenuation and differential attenuation (e.g., Bringi et al. 1990; Testud et al. 2000; Snyder et al. 2010; Borowska et al. 2011; Gu et al. 2011)....
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81 citations
Cites background or methods from "Attenuation and Differential Attenu..."
...Initial work with OU-PRIME has focused on comparative, multiple-wavelength studies exploiting other independent radars in Norman (e.g., Picca and Ryzhkov 2010; Borowska et al. 2011; Gu et al. 2011) and the development and implementation of advanced signal processing algorithms (Wang et al....
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...Of these, the strongest two were rated enhanced Fujita scale ratings of 4 (EF-4; www.depts.ttu.edu/ weweb/F_scale/images/efsr.pdf) and both of these occurred in or near Norman (Fig....
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...…with OU-PRIME has focused on comparative, multiple-wavelength studies exploiting other independent radars in Norman (e.g., Picca and Ryzhkov 2010; Borowska et al. 2011; Gu et al. 2011) and the development and implementation of advanced signal processing algorithms (Wang et al. 2008; Lei et al.…...
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...OBSERVATIONS OF THE 10 MAY 2010 TORNADO OUTBREAK USING OU-PRIME Potential for New Science with High-Resolution Polarimetric Radar by RobeRt D. PalmeR, DaviD boDine, matthew Kumjian, boonleng Cheong, guifu Zhang, Qing Cao, howaRD b. bluestein, alexanDeR RyZhKov, tian-you yu, anD yaDong wang AFFILIATIONS: PalmeR, boDine, anD Zhang—School of Meteorology, and Atmospheric Radar Research Center, University of Oklahoma, Norman, Oklahoma; Kumjian, RyZhKov, anD wang— Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, Oklahoma; Cheong anD Cao— Atmospheric Radar Research Center, University of Oklahoma, Norman, Oklahoma; bluestein—School of Meteorology, University of Oklahoma, Norman, Oklahoma; yu—School of Electrical and Computer Engineering, and Atmospheric Radar Research Center, University of Oklahoma, Norman, Oklahoma CORRESPONDING AUTHOR: Robert D. Palmer, Atmospheric Radar Research Center, University of Oklahoma, 120 David L. Boren Blvd., Suite 4610, Norman, OK 73072 E-mail: rpalmer@ou.edu The abstract for this article can be found in this issue, following the table of contents....
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...In 2003, the University of Oklahoma (OU) decided to build on the strong foundation of weather radar research in Norman by investing specifically in 10 new faculty positions, support staff, and experimental infrastructure....
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References
1,043 citations
"Attenuation and Differential Attenu..." refers background in this paper
...This is a classical polarimetric hail signature (Bringi and Chandrasekar 2001)....
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437 citations
"Attenuation and Differential Attenu..." refers background in this paper
...…differential attenuation ADP, are well examined in numerous theoretical and experimental studies (e.g., Bringi et al. 1990, 2001; Carey et al. 2000; Testud et al. 2000; Zrnić et al. 2000; Le Bouar et al. 2001; Keenan et al. 2001; Gourley et al. 2007; Vulpiani et al. 2008; Tabary et al. 2009)....
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404 citations
"Attenuation and Differential Attenu..." refers background or methods in this paper
...The simulations are performed for a radar wavelength of 5.45 cm and a raindrop temperature of 08C, assuming that the raindrop shape depends on its equivolume diameter as described by Brandes et al. (2002)....
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...45 cm and a temperature of 08C, assuming raindrop shapes according to Brandes et al. (2002). In (a), the curves representing Eqs....
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...45 cm and a raindrop temperature of 08C, assuming that the raindrop shape depends on its equivolume diameter as described by Brandes et al. (2002). The mean canting angle is assumed to be zero, and the width of the canting angle distribution is set to 108....
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...45 cm and a raindrop temperature of 08C, assuming that the raindrop shape depends on its equivolume diameter as described by Brandes et al. (2002). The mean canting angle is assumed to be zero, and the width of the canting angle distribution is set to 108. The disdrometer measurements are truncated at a maximum diameter of 8 mm and therefore might contain some contribution from small hail. For the overwhelming majority of the measured drop size distributions (DSDs) we get Ah , 0.8 dB km 21 and ADP , 0.3 dB km(21). Overlaid in Fig. 1a are three mean curves describing the dependencies of Ah on Zh according to Le Bouar et al. (2001) and Zhang and Moayeri (1999):...
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273 citations
"Attenuation and Differential Attenu..." refers background in this paper
...…at horizontal polarization Ah and specific differential attenuation ADP, are well examined in numerous theoretical and experimental studies (e.g., Bringi et al. 1990, 2001; Carey et al. 2000; Testud et al. 2000; Zrnić et al. 2000; Le Bouar et al. 2001; Keenan et al. 2001; Gourley et al. 2007;…...
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...A motivating factor for the interest in attenuation is the potential to restore partially lost signals by applying a relation between the bias caused by attenuation (or differential attenuation) and differential phase (Bringi et al. 1990)....
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...In rain, the ratio a 5 Ah/KDP at C band usually varies between 0.05 and 0.13 decibels per degree as reported by Bringi et al. (1990), Carey et al. (2000), Gourley et al. (2007), and Ryzhkov et al. (2007)....
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245 citations