The effect of the sea-ice zone on the development of boundary-layer roll clouds during cold-air outbreaks

Liu, A. Q., Moore, G. W. K., Tsuboki, K. and Renfrew, I. A. ORCID: https://orcid.org/0000-0001-9379-8215 (2006) The effect of the sea-ice zone on the development of boundary-layer roll clouds during cold-air outbreaks. Boundary-Layer Meteorology, 118. pp. 557-581. ISSN 1573-1472

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Abstract

High latitude air–sea interaction is an important component of the earth’s climate system and the exchanges of mass and energy over the sea-ice zone are complicated processes that, at present, are not well understood. In this paper, we perform a series of numerical experiments to examine the effect of sea-ice concentration on the development of high latitude boundary-layer roll clouds. The experiments are performed at sufficiently high spatial resolution to be able to resolve the individual convective roll clouds, and over a large enough domain to be able to examine the roll’s downstream development. Furthermore the high spatial resolution of the experiments allows for an explicit representation of heterogeneity within the sea-ice zone. The results show that the sea-ice zone has a significant impact on the atmospheric boundary-layer development, which can be seen in both the evolution of the cloud field and the development of heat and moisture transfer patterns. In particular, we find the air-sea exchanges of momentum, moisture and heat fluxes are modified by the presence of the roll vortices (typically a 10% difference in surface heat fluxes between updrafts and downdrafts) and by the concentration and spatial distribution of the sea-ice. This suggests that a more realistic representation of processes over the sea-ice zone is needed to properly calculate the air-sea energy and mass exchange budgets.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Meteorology, Oceanography and Climate Dynamics (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User:	Rosie Cullington
Date Deposited:	28 Jan 2011 08:51
Last Modified:	15 Mar 2024 17:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/20159
DOI:	10.1007/s10546-005-6434-4

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