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Title: European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
Authors: Lavers, David
Prudhomme, Christel
Hannah, David M.
Issue Date: 2013
Publisher: Taylor & Francis (Published on behalf of the International Association of Hydrological Sciences (IAHS))
Citation: LAVERS, D., PRUDHOMME, C. and HANNA, D.M., 2013. European precipitation connections with large-scale mean sea-level pressure (MSLP) fields. Hydrological Sciences Journal, 58 (2), pp.310-327
Abstract: To advance understanding of hydroclimatological processes, this paper links spatiotemporal variability in gridded European precipitation and large-scale mean sea-level pressure (MSLP) time series (1957-2002) using monthly concurrent correlation. Strong negative (positive) correlation near Iceland and (the Azores) is apparent for precipitation in northwest Europe, confirming a positive North Atlantic Oscillation (NAO) association. An opposing pattern is found for southwest Europe, and the Mediterranean in winter. In the lee of mountains, MSLP correlation is lower reflecting reduced influence of westerlies on precipitation generation. Importantly, European precipitation is shown to be controlled by physically interpretable climate patterns that change in extent and position from month to month. In spring, MSLP-precipitation correlation patterns move and shrink, reaching a minimum in summer, before expanding in the autumn, and forming an NAO-like dipole in winter. These space-time shifts in correlation regions explain why fixed-point NAO indices have limited ability to resolve precipitation for some European locations and seasons.Editor Z.W. Kundzewicz; Associate editor A. MontanariCitation Lavers, D., Prudhomme, C., and Hannah, D.M., 2013. European precipitation connections with large-scale mean sea-level pressure (MSLP) fields. Hydrological Sciences Journal, 58 (2), 310-327. © 2013 Copyright 2013 IAHS Press.
Description: This is an Submitted Manuscript of an article published by Taylor & Francis in on 19th February 2013, available online: http://www.tandfonline.com/10.1080/02626667.2012.754545
Version: Submitted for publication
DOI: 10.1080/02626667.2012.754545
URI: https://dspace.lboro.ac.uk/2134/21181
Publisher Link: http://dx.doi.org/10.1080/02626667.2012.754545
ISSN: 0262-6667
Appears in Collections:Published Articles (Geography and Environment)

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