D. Maraun
Precipitation downscaling under climate change: Recent developments to bridge the gap between dynamical models and the end user
Maraun, D.; Wetterhall, F.; Ireson, A. M.; Chandler, R. E.; Kendon, E. J.; Widmann, M.; Brienen, S.; Rust, H. W.; Sauter, T.; Themel, M.; Venema, V. K.C.; Chun, K. P.; Goodess, C. M.; Jones, R. G.; Onof, C.; Vrac, M.; Thiele-Eich, I.
Authors
F. Wetterhall
A. M. Ireson
R. E. Chandler
E. J. Kendon
M. Widmann
S. Brienen
H. W. Rust
T. Sauter
M. Themel
V. K.C. Venema
Dr Kwok Chun Kwok.Chun@uwe.ac.uk
Lecturer in Environmental Managment
C. M. Goodess
R. G. Jones
C. Onof
M. Vrac
I. Thiele-Eich
Abstract
Precipitation downscaling improves the coarse resolution and poor representation of precipitation in global climate models and helps end users to assess the likely hydrological impacts of climate change. This paper integrates perspectives from meteorologists, climatologists, statisticians, and hydrologists to identify generic end user (in particular, impact modeler) needs and to discuss downscaling capabilities and gaps. End users need a reliable representation of precipitation intensities and temporal and spatial variability, as well as physical consistency, independent of region and season. In addition to presenting dynamical downscaling, we review perfect prognosis statistical downscaling, model output statistics, and weather generators, focusing on recent developments to improve the representation of space-time variability. Furthermore, evaluation techniques to assess downscaling skill are presented. Downscaling adds considerable value to projections from global climate models. Remaining gaps are uncertainties arising from sparse data; representation of extreme summer precipitation, subdaily precipitation, and full precipitation fields on fine scales; capturing changes in small-scale processes and their feedback on large scales; and errors inherited from the driving global climate model. © 2010 by the American Geophysical Union.
Journal Article Type | Article |
---|---|
Publication Date | Sep 1, 2010 |
Deposit Date | Jun 17, 2022 |
Publicly Available Date | Jun 20, 2022 |
Journal | Reviews of Geophysics |
Print ISSN | 8755-1209 |
Electronic ISSN | 1944-9208 |
Publisher | American Geophysical Union |
Peer Reviewed | Peer Reviewed |
Volume | 48 |
Issue | 3 |
DOI | https://doi.org/10.1029/2009RG000314 |
Public URL | https://uwe-repository.worktribe.com/output/9431638 |
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Licence
http://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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