A new mixing-length formulation for the parameterization of dry convection: Implementation and evaluation in mesoscale model

18Citations
Citations of this article
19Readers
Mendeley users who have this article in their library.
Get full text

Abstract

A realistic representation of the evolution of the dry convective boundary layer in mesoscale and large-scale atmospheric models has been an elusive goal for many years. In this paper the performance of a new mixing-length formulation for the dry convective boundary layer is evaluated in the context of the Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS). In this new formulation, the mixing length is proportional to a time scale and to the square root of the turbulent kinetic energy. The model results are tested against observations from the Climate Impact of Changes in Land Use (CICLUS) field experiment in the south of Portugal. It is shown that COAMPS with the new formulation produces a more realistic simulation of the boundary layer growth. A data assimilation experiment performed with COAMPS shows that the improvements provided by the new formulation are significant, particularly in terms of the humidity vertical distribution. Finally, one-dimensional simulations are used to confirm that the new formulation provides more accurate results because of a more realistic representation of the entrainment and of the vertical mixing in general. © 2004 American Meteorological Society.

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Teixeira, J., Ferreira, J. P., Miranda, P. M. A., Haack, T., Doyle, J., Siebsema, A. P., & Salgado, R. (2004, November). A new mixing-length formulation for the parameterization of dry convection: Implementation and evaluation in mesoscale model. Monthly Weather Review. https://doi.org/10.1175/MWR2808.1

Readers' Seniority

Tooltip

Professor / Associate Prof. 6

40%

Researcher 5

33%

PhD / Post grad / Masters / Doc 3

20%

Lecturer / Post doc 1

7%

Readers' Discipline

Tooltip

Earth and Planetary Sciences 9

60%

Environmental Science 4

27%

Mathematics 1

7%

Engineering 1

7%

Save time finding and organizing research with Mendeley

Sign up for free