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Title: Sensitivity of a global climate model to the critical Richardson number in the boundary layer parameterization

Journal Article · · Journal of Geophysical Research: Atmospheres
DOI:https://doi.org/10.1002/2014JD022015· OSTI ID:1201338
 [1];  [2];  [3];  [4]
  1. Nanjing Univ., Nanjing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Institute of Atmospheric Physics, Beijing (China)
  4. Princeton Univ., Princeton, NJ (United States)
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The critical bulk Richardson number (Ricr) is an important parameter in planetary boundary layer (PBL) parameterization schemes used in many climate models. This paper examines the sensitivity of a Global Climate Model, the Beijing Climate Center Atmospheric General Circulation Model, BCC_AGCM to Ricr. The results show that the simulated global average of PBL height increases nearly linearly with Ricr, with a change of about 114 m for a change of 0.5 in Ricr. The surface sensible (latent) heat flux decreases (increases) as Ricr increases. The influence of Ricr on surface air temperature and specific humidity is not significant. The increasing Ricr may affect the location of the Westerly Belt in the Southern Hemisphere. Further diagnosis reveals that changes in Ricr affect stratiform and convective precipitations differently. Increasing Ricr leads to an increase in the stratiform precipitation but a decrease in the convective precipitation. Significant changes of convective precipitation occur over the inter-tropical convergence zone, while changes of stratiform precipitation mostly appear over arid land such as North Africa and Middle East.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC00112704
OSTI ID:
1201338
Report Number(s):
BNL-107834-2015-JA; R&D Project: 2016-BNL-EE631EECA-Budg; KP1703020
Journal Information:
Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 8; ISSN 2169-897X
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (24)

Observational Support for the Stability Dependence of the Bulk Richardson Number Across the Stable Boundary Layer journal November 2013
A New Moist Turbulence Parameterization in the Community Atmosphere Model journal June 2009
Atmospheric Controls on Soil Moisture–Boundary Layer Interactions. Part I: Framework Development journal June 2003
The Critical Richardson Number and Limits of Applicability of Local Similarity Theory in the Stable Boundary Layer journal September 2012
Local Versus Nonlocal Boundary-Layer Diffusion in a Global Climate Model journal October 1993
Two phenomenological constants explain similarity laws in stably stratified turbulence journal February 2014
The National Center for Atmospheric Research Community Climate Model: CCM3* journal June 1998
Evaluation of Surface Flux Parameterizations with Long-Term ARM Observations journal February 2013
A parametric model of vertical eddy fluxes in the atmosphere journal September 1979
On the stability of heterogeneous shear flows journal June 1961
Improvement of the K-profile Model for the Planetary Boundary Layer based on Large Eddy Simulation Data journal May 2003
The University of Washington Shallow Convection and Moist Turbulence Schemes and Their Impact on Climate Simulations with the Community Atmosphere Model journal June 2009
Improving Stable Boundary-Layer Height Estimation Using a Stability-Dependent Critical Bulk Richardson Number journal March 2013
Effects of Spatial and Temporal Variations in PBL Depth on a GCM journal September 2007
An Introduction to Boundary Layer Meteorology book January 1988
A simple model of the atmospheric boundary layer; sensitivity to surface evaporation journal October 1986
Evaluation and model impacts of alternative boundary-layer height formulations journal December 1996
A Modified Dynamic Framework for the Atmospheric Spectral Model and Its Application journal July 2008
The Beijing Climate Center atmospheric general circulation model: description and its performance for the present-day climate journal December 2008
The Critical Richardson Number and the Ratio of the Eddy Transport Coefficients Obtained from a Turbulence Closure Model journal May 1975
Cloud Simulations in Response to Turbulence Parameterizations in the GISS Model E GCM journal July 2012
Sensitivity of climate simulations to the parameterization of cumulus convection in the Canadian climate centre general circulation model journal September 1995
Effects of modifications to the Zhang-McFarlane convection parameterization on the simulation of the tropical precipitation in the National Center for Atmospheric Research Community Climate Model, version 3 journal January 2005
On the computation of planetary boundary-layer height using the bulk Richardson number method journal November 2014

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Related Subjects

54 ENVIRONMENTAL SCIENCES
global climate model
critical bulk Richardson number
planetary boundary layer
precipitation