A new approach for estimating entrainment rate in cumulus clouds

Chunsong Lu, Yangang Liu, Seong Soo Yum, Shengjie Niu, Satoshi Endo

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A new approach is presented to estimate entrainment rate in cumulus clouds. The new approach is directly derived from the definition of fractional entrainment rate and relates it to mixing fraction and the height above cloud base. The results derived from the new approach compare favorably with those obtained with a commonly used approach, and have smaller uncertainty. This new approach has several advantages: it eliminates the need for in-cloud measurements of temperature and water vapor content, which are often problematic in current aircraft observations; it has the potential for straightforwardly connecting the estimation of entrainment rate and the microphysical effects of entrainment-mixing processes; it also has the potential for developing a remote sensing technique to infer entrainment rate.

Original languageEnglish
Article numberL04802
JournalGeophysical Research Letters
Volume39
Issue number4
DOIs
Publication statusPublished - 2012 Feb 1

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cumulus clouds
entrainment
cumulus
estimating
observation aircraft
water vapor
remote sensing
aircraft
rate
vapors
estimates
temperature

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Lu, Chunsong ; Liu, Yangang ; Yum, Seong Soo ; Niu, Shengjie ; Endo, Satoshi. / A new approach for estimating entrainment rate in cumulus clouds. In: Geophysical Research Letters. 2012 ; Vol. 39, No. 4.
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A new approach for estimating entrainment rate in cumulus clouds. / Lu, Chunsong; Liu, Yangang; Yum, Seong Soo; Niu, Shengjie; Endo, Satoshi.

In: Geophysical Research Letters, Vol. 39, No. 4, L04802, 01.02.2012.

Research output: Contribution to journalArticle

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