Sensitivity of tropical deep convection in global models: effects of horizontal resolution, surface constraints, and 3D atmospheric nudging

Chemel, Charles; Russo, Maria R.; Hosking, J. Scott ORCID: https://orcid.org/0000-0002-3646-3504; Telford, Paul J.; Pyle, John A.. 2015 Sensitivity of tropical deep convection in global models: effects of horizontal resolution, surface constraints, and 3D atmospheric nudging. Atmospheric Science Letters, 16 (2). 148-154. 10.1002/asl2.540

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Abstract/Summary

We investigate the ability of global models to capture the spatial patterns of tropical deep convection. Their sensitivity is assessed through changing horizontal resolution, surface flux constraints, and constraining background atmospheric conditions. We assess two models at typical climate and weather forecast resolutions. Comparison with observations indicates that increasing resolution generally improves the pattern of tropical convection. When the models are constrained with realistic surface fluxes and atmospheric structure, the location of convection improves dramatically and is very similar irrespective of resolution and parameterizations used in the models.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1002/asl2.540
Programmes:	BAS Programmes > Polar Science for Planet Earth (2009 - ) > Climate
ISSN:	1530261X
Additional Keywords:	tropical deep convection, global models, nudging, surface fluxes
Date made live:	17 Nov 2014 14:54 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/508833

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1002/asl2.540

Programmes:

BAS Programmes > Polar Science for Planet Earth (2009 - ) > Climate

ISSN:

1530261X

Additional Keywords:

tropical deep convection, global models, nudging, surface fluxes

Date made live:

17 Nov 2014 14:54 +0 (UTC)