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Parametrization of the depth of the entrainment zone above the daytime mixed layer

✍ Scribed by Sven-Erik Gryning; Ekaterina Batchvarova

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
630 KB
Volume
120
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

A new parametrization for the depth of the daytime entrainment zone is presented. It is derived from a simple energy budget, in which the eddy velocity in the mixed layer penetrating the overlying stable entrainment zone is taken to be proportional to the characteristic top‐down velocity scale. It gives a better ordering of the data of two earlier studies by Deardorff et al. and Boers and Eloranta as compared with traditional parcel theory based on the bottom‐up velocity scale. Furthermore, it can be seen that the data from the two studies belong to different regimes of the characteristic scaling parameter.

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