European precipitation connections with large-scale mean sea-level pressure (MSLP) fields

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 an...

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Main Authors:	David Lavers, Christel Prudhomme, David M. Hannah
Format:	Default Article
Published:	2013
Subjects:	Other earth sciences not elsewhere classified untagged Earth Sciences not elsewhere classified
Online Access:	https://hdl.handle.net/2134/21181
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id	rr-article-9481403
record_format	Figshare
spelling	rr-article-94814032013-01-01T00:00:00Z European precipitation connections with large-scale mean sea-level pressure (MSLP) fields David Lavers (7190603) Christel Prudhomme (7190294) David M. Hannah (7190423) Other earth sciences not elsewhere classified untagged Earth Sciences not elsewhere classified 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. 2013-01-01T00:00:00Z Text Journal contribution 2134/21181 https://figshare.com/articles/journal_contribution/European_precipitation_connections_with_large-scale_mean_sea-level_pressure_MSLP_fields/9481403 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Other earth sciences not elsewhere classified untagged Earth Sciences not elsewhere classified
spellingShingle	Other earth sciences not elsewhere classified untagged Earth Sciences not elsewhere classified David Lavers Christel Prudhomme David M. Hannah European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
description	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.
format	Default Article
author	David Lavers Christel Prudhomme David M. Hannah
author_facet	David Lavers Christel Prudhomme David M. Hannah
author_sort	David Lavers (7190603)
title	European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
title_short	European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
title_full	European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
title_fullStr	European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
title_full_unstemmed	European precipitation connections with large-scale mean sea-level pressure (MSLP) fields
title_sort	european precipitation connections with large-scale mean sea-level pressure (mslp) fields
publishDate	2013
url	https://hdl.handle.net/2134/21181
_version_	1799186149186469888

European precipitation connections with large-scale mean sea-level pressure (MSLP) fields

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