Polarimetric radar and aircraft observations of saggy bright bands during MC3E

Matthew Robert Kumjian, Subashree Mishra, Scott E. Giangrande, Tami Toto, Alexander V. Ryzhkov, Aaron Bansemer

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Polarimetric radar observations increasingly are used to understand cloud microphysical processes, which is critical for improving their representation in cloud and climate models. In particular, there has been recent focus on improving representations of ice collection processes (e.g., aggregation and riming), as these influence precipitation rate, heating profiles, and ultimately cloud life cycles. However, distinguishing these processes using conventional polarimetric radar observations is difficult, as they produce similar fingerprints. This necessitates improved analysis techniques and integration of complementary data sources. The Midlatitude Continental Convective Clouds Experiment (MC3E) provided such an opportunity. Quasi-vertical profiles of polarimetric radar variables in two MC3E stratiform precipitation events reveal episodic melting layer sagging. Integrated analyses using scanning and vertically pointing radar and aircraft measurements reveal that saggy bright band signatures are produced when denser, faster-falling, more isometric hydrometeors (relative to adjacent times) descend into the melting layer. In one case, strong circumstantial evidence for riming is found during bright band sagging times. A bin microphysical melting layer model successfully reproduces many aspects of the signature, supporting the observational analysis. If found to be a reliable indicator of riming, saggy bright bands could be a proxy for the presence of supercooled liquid water in stratiform precipitation, which may provid.

Original languageEnglish (US)
Pages (from-to)3584-3607
Number of pages24
JournalJournal of Geophysical Research
Volume121
Issue number7
DOIs
StatePublished - Jan 1 2016

Fingerprint

radar tracking
aircraft
radar
Radar
melting
Aircraft
Melting
signatures
hydrometeors
episodic event
Climate models
radar measurement
convective cloud
climate models
airborne survey
temperate regions
Ice
Bins
profiles
Heating rate

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Kumjian, Matthew Robert ; Mishra, Subashree ; Giangrande, Scott E. ; Toto, Tami ; Ryzhkov, Alexander V. ; Bansemer, Aaron. / Polarimetric radar and aircraft observations of saggy bright bands during MC3E. In: Journal of Geophysical Research. 2016 ; Vol. 121, No. 7. pp. 3584-3607.
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Kumjian, MR, Mishra, S, Giangrande, SE, Toto, T, Ryzhkov, AV & Bansemer, A 2016, 'Polarimetric radar and aircraft observations of saggy bright bands during MC3E', Journal of Geophysical Research, vol. 121, no. 7, pp. 3584-3607. https://doi.org/10.1002/2015JD024446

Polarimetric radar and aircraft observations of saggy bright bands during MC3E. / Kumjian, Matthew Robert; Mishra, Subashree; Giangrande, Scott E.; Toto, Tami; Ryzhkov, Alexander V.; Bansemer, Aaron.

In: Journal of Geophysical Research, Vol. 121, No. 7, 01.01.2016, p. 3584-3607.

Research output: Contribution to journalArticle

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