New measure of entrainment zone structure

被引:5
作者
Brooks, I. M. [1 ]
Fowler, A. M. [1 ]
机构
[1] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
关键词
D O I
10.1029/2007GL030958
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A wavelet covariance algorithm designed to objectively identify the upper and lower limits of the local transition zone between boundary layer and free troposphere is applied to the output fields from a series of Large Eddy Simulations of the convective atmospheric boundary layer. A new measure of entrainment zone structure is defined - the normalized difference between the standard deviations of the local transition zone limits; this is found to be a function of the convective Richardson number and a predictor of normalized entrainment rate. This provides a robust and objective means for determining the Richardson number from remote sensing observations, and the basis for determining the entrainment rate.
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页数:5
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共 35 条
  • [21] The parametrization of entrainment in cloudy boundary layers
    Lock, AP
    [J]. QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1998, 124 (552) : 2729 - 2753
  • [22] MELFI SH, 1985, J CLIM APPL METEOROL, V24, P806, DOI 10.1175/1520-0450(1985)024<0806:LOOVOC>2.0.CO
  • [23] 2
  • [24] MOENG CH, 1994, J ATMOS SCI, V51, P999, DOI 10.1175/1520-0469(1994)051<0999:ACOSAB>2.0.CO
  • [25] 2
  • [26] Otte MJ, 2001, J ATMOS SCI, V58, P3424, DOI 10.1175/1520-0469(2001)058<3424:SSILTF>2.0.CO
  • [27] 2
  • [28] Pino D, 2003, J ATMOS SCI, V60, P1913, DOI 10.1175/1520-0469(2003)060<1913:TCOSTT>2.0.CO
  • [29] 2
  • [30] Sullivan PP, 1998, J ATMOS SCI, V55, P3042, DOI 10.1175/1520-0469(1998)055<3042:SOTEZC>2.0.CO