Cloud radar observations of vertical drafts and microphysics in convective rain

Pavlos Kollias, Bruce A Albrecht, F. D. Marks

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Observations of convective precipitation using a 94-GHz cloud radar are presented. Due to Mie scattering, the Doppler power spectra collected at vertical incidence contains characteristics of the scatterers (hydrometeors). These characteristics are used for the retrieval of the vertical air motion and the associated raindrop size distribution in an attempt to accurately map the time-height structure of the vertical air motion and raindrop fields within intense convective precipitation. The data provide strong evidence of the interaction between draft intensity and raindrop size distribution and highlight the variability of convective precipitation at small scales. Horizontal sorting of the raindrops caused by the air motion is documented. Signal attenuation measured at 94 GHz is shown to be well correlated to rainfall rates. The observations demonstrate the capability of 94-GHz cloud radars for studies of precipitation processes at low altitudes even under intense convective conditions.

Original languageEnglish (US)
JournalJournal of Geophysical Research C: Oceans
Volume108
Issue number2
StatePublished - Jan 27 2003

Fingerprint

raindrops
draft
radar tracking
raindrop
rain
Rain
Radar
radar
Air
air
Precipitation (meteorology)
hydrometeors
Power spectrum
Sorting
low altitude
Mie scattering
classifying
sorting
Scattering
retrieval

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Cloud radar observations of vertical drafts and microphysics in convective rain. / Kollias, Pavlos; Albrecht, Bruce A; Marks, F. D.

In: Journal of Geophysical Research C: Oceans, Vol. 108, No. 2, 27.01.2003.

Research output: Contribution to journalArticle

Kollias, Pavlos ; Albrecht, Bruce A ; Marks, F. D. / Cloud radar observations of vertical drafts and microphysics in convective rain. In: Journal of Geophysical Research C: Oceans. 2003 ; Vol. 108, No. 2.
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