Jemmett-Smith, B, Ross, AN orcid.org/0000-0002-8631-3512 and Sheridan, P (2018) A short climatological study of cold air pools and drainage flows in small valleys. Weather, 73 (8). pp. 256-262. ISSN 0043-1656
Abstract
This paper uses detailed observations from the COLd air Pooling EXperiment (COLPEX) to study the frequency and characteristics of cold air pooling in a small-scale valley typical of much of the southern UK and other lowland regions of the world. The field experiment took place in and around the Clun Valley, Shropshire, England during July 2009-April 2010, which was a particularly cold winter with a record low in the NAO index. Cold pools, defined here as where the minimum valley temperature overnight is at least 1°C colder than the surrounding hill tops, occur on 45% of nights over the observational period, with strong cold pools (>4°C temperature difference) occurring on 12% of nights. As might be expected, cold pool formation is closely linked to conditions with clear skies and light winds, often associated with high pressure situations. Cold pools are also closely linked with weak down valley drainage flows. This contrasts with non-cold pool nights or daytime conditions where several other mechanisms also contribute to the observed winds in the valley. The data set highlights the importance of cold air pools and drainage flows, even in quite moderate terrain, and the impact this can have on local microclimates.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2018 Crown copyright, Met Office. Weather © 2018 Royal Meteorological Society. This article is published with the permission of the Controller of HMSO and the Queen’s Printer for Scotland. This is the peer reviewed version of the following article: 'Jemmett-Smith, B, Ross, AN and Sheridan, P (2018) A short climatological study of cold air pools and drainage flows in small valleys. Weather, 73 (8). pp. 256-262,' which has been published in final form at [https://doi.org/10.1002/wea.3281]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 May 2018 10:41 |
Last Modified: | 01 Aug 2019 00:42 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/wea.3281 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:130494 |