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Title: Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic

The study of Arctic ice and mixed-phase clouds, which are characterized by a variety of ice particle types in the same cloudy volume, is challenging research. This study illustrates a new approach to qualitative and quantitative analysis of the complexity of ice and mixed-phase microphysical processes in Arctic deep precipitating systems using the combination of Ka-band zenith-pointing radar Doppler spectra and quasi-vertical profiles of polarimetric radar variables measured by a Ka/W-band scanning radar. The results illustrate the frequent occurrence of multimodal Doppler spectra in the dendritic/planar growth layer, where locally generated, slower-falling particle populations are well separated from faster-falling populations in terms of Doppler velocity. The slower-falling particle populations contribute to an increase of differential reflectivity (Z DR), while an enhanced specific differential phase (K DP) in this dendritic growth temperature range is caused by both the slower and faster-falling particle populations. Another area with frequent occurrence of multimodal Doppler spectra is in mixed-phase layers, where both populations produce Z DR and K DP values close to 0, suggesting the occurrence of a riming process. A Joint analysis of the Doppler spectra and the polarimetric radar variables provides important insight into the microphysics of snow formation and allows the separationmore » of the contributions of ice of different habits to the values of reflectivity and Z DR.« less
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [4]
  1. Stony Brook Univ., NY (United States). School of Marine and Atmospheric Sciences
  2. Stony Brook Univ., NY (United States). School of Marine and Atmospheric Sciences; Brookhaven National Lab. (BNL), Upton, NY (United States). Biological, Environmental & Climate Sciences Dept.
  3. Cooperative Inst. for Mesoscale Meteorological Studies/National Severe Storms Lab., Moss Landing, CA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Biological, Environmental & Climate Sciences Dept.
Publication Date:
Report Number(s):
BNL-203279-2018-JAAM
Journal ID: ISSN 2169-897X
Grant/Contract Number:
SC0012704; SC0014295; SC00112704
Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 123; Journal Issue: 5; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Climate and Environmental Sciences Division
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1424987
Alternate Identifier(s):
OSTI ID: 1423398

Oue, Mariko, Kollias, Pavlos, Ryzhkov, Alexander, and Luke, Edward P. Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic. United States: N. p., Web. doi:10.1002/2017JD027717.
Oue, Mariko, Kollias, Pavlos, Ryzhkov, Alexander, & Luke, Edward P. Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic. United States. doi:10.1002/2017JD027717.
Oue, Mariko, Kollias, Pavlos, Ryzhkov, Alexander, and Luke, Edward P. 2018. "Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic". United States. doi:10.1002/2017JD027717.
@article{osti_1424987,
title = {Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic},
author = {Oue, Mariko and Kollias, Pavlos and Ryzhkov, Alexander and Luke, Edward P.},
abstractNote = {The study of Arctic ice and mixed-phase clouds, which are characterized by a variety of ice particle types in the same cloudy volume, is challenging research. This study illustrates a new approach to qualitative and quantitative analysis of the complexity of ice and mixed-phase microphysical processes in Arctic deep precipitating systems using the combination of Ka-band zenith-pointing radar Doppler spectra and quasi-vertical profiles of polarimetric radar variables measured by a Ka/W-band scanning radar. The results illustrate the frequent occurrence of multimodal Doppler spectra in the dendritic/planar growth layer, where locally generated, slower-falling particle populations are well separated from faster-falling populations in terms of Doppler velocity. The slower-falling particle populations contribute to an increase of differential reflectivity (ZDR), while an enhanced specific differential phase (KDP) in this dendritic growth temperature range is caused by both the slower and faster-falling particle populations. Another area with frequent occurrence of multimodal Doppler spectra is in mixed-phase layers, where both populations produce ZDR and KDP values close to 0, suggesting the occurrence of a riming process. A Joint analysis of the Doppler spectra and the polarimetric radar variables provides important insight into the microphysics of snow formation and allows the separation of the contributions of ice of different habits to the values of reflectivity and ZDR.},
doi = {10.1002/2017JD027717},
journal = {Journal of Geophysical Research: Atmospheres},
number = 5,
volume = 123,
place = {United States},
year = {2018},
month = {3}
}

Works referenced in this record:

Disentangling Mie and attenuation effects in rain using a Ka -W dual-wavelength Doppler spectral ratio technique
journal, October 2013
  • Tridon, Frédéric; Battaglia, Alessandro; Kollias, Pavlos
  • Geophysical Research Letters, Vol. 40, Issue 20, p. 5548-5552
  • DOI: 10.1002/2013GL057454

Scanning ARM Cloud Radars. Part I: Operational Sampling Strategies
journal, March 2014
  • Kollias, Pavlos; Bharadwaj, Nitin; Widener, Kevin
  • Journal of Atmospheric and Oceanic Technology, Vol. 31, Issue 3, p. 569-582
  • DOI: 10.1175/JTECH-D-13-00044.1