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Toward Improving Ice Water Content And Snow-rate Retrievals From Radars. Part Ii

Title: Toward Improving Ice Water Content And Snow-rate Retrievals From Radars. Part Ii: Results From Three Wavelength Radar-collocated In Situ Measurements And Cloudsat-gpm-trmm Radar Data.
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Name(s): Heymsfield, Andrew, author
Bansemer, Aaron, author
Wood, Norman B., author
Liu, Guosheng, author
Tanelli, Simone, author
Sy, Ousmane O., author
Poellot, Michael, author
Liu, Chuntao, author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-02
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Two methods for deriving relationships between the equivalent radar reflectivity factor Z(e) and the snowfall rate S at three radar wavelengths are described. The first method uses collocations of in situ aircraft (microphysical observations) and overflying aircraft (radar observations) from two field programs to develop Z(e)-S relationships. In the second method, measurements of Z(e) at the top of the melting layer (ML), from radars on the Tropical Rainfall Measuring Mission (TRMM), Global Precipitation Measurement (GPM), and CloudSat satellites, are related to the retrieved rainfall rate R at the base of the ML, assuming that the mass flux through the ML is constant. Retrievals of R are likely to be more reliable than S because far fewer assumptions are involved in the retrieval and because supporting ground-based validation data are available. The Z(e)-S relationships developed here for the collocations and the mass-flux technique are compared with those derived from level 2 retrievals from the standard satellite products and with a number of relationships developed and reported by others. It is shown that there are substantial differences among them. The relationships developed here promise improvements in snowfall-rate retrievals from satellite-based radar measurements.
Identifier: FSU_libsubv1_wos_000427362400010 (IID), 10.1175/JAMC-D-17-0164.1 (DOI)
Keywords: uncertainties, reflectivity, particles, hydrometeors, melting layer, precipitation radar, rain-profiling algorithm, single-scattering properties, size distributions, terminal velocities
Publication Note: The publisher's version of record is available at https://doi.org/10.1175/JAMC-D-17-0164.1
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000427362400010
Owner Institution: FSU
Is Part Of: Journal of Applied Meteorology and Climatology.
1558-8424
Issue: iss. 2, vol. 57

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Heymsfield, A., Bansemer, A., Wood, N. B., Liu, G., Tanelli, S., Sy, O. O., … Liu, C. (2018). Toward Improving Ice Water Content And Snow-rate Retrievals From Radars. Part Ii: Results From Three Wavelength Radar-collocated In Situ Measurements And Cloudsat-gpm-trmm Radar Data. Journal Of Applied Meteorology And Climatology. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000427362400010