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Colin E. Johnson
Researcher at Met Office
Publications - 76
Citations - 9593
Colin E. Johnson is an academic researcher from Met Office. The author has contributed to research in topics: Tropospheric ozone & Aerosol. The author has an hindex of 48, co-authored 76 publications receiving 8513 citations. Previous affiliations of Colin E. Johnson include University of Leeds & Hadley Centre for Climate Prediction and Research.
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Journal ArticleDOI
The HadGEM2 family of Met Office Unified Model climate configurations
Nicolas Bellouin,William J. Collins,I. D. Culverwell,Paul R. Halloran,Steven C. Hardiman,Tim Hinton,C. D. Jones,R. E. McDonald,A. J. McLaren,Fiona M. O'Connor,Malcolm J. Roberts,José M. Rodríguez,S. Woodward,Martin Best,M. E. Brooks,Andrew Brown,N. Butchart,Christopher Dearden,S. H. Derbyshire,I. Dharssi,Marie Doutriaux-Boucher,John M. Edwards,Pete Falloon,Nicola Gedney,Lesley J. Gray,Helene T. Hewitt,M. Hobson,M. R. Huddleston,J. Hughes,Sarah Ineson,William Ingram,William Ingram,P. M. James,T. C. Johns,Colin E. Johnson,A. Jones,C. P. Jones,Manoj Joshi,A. B. Keen,Spencer Liddicoat,Adrian Lock,A. V. Maidens,James Manners,Sean Milton,J. G. L. Rae,Jeff Ridley,Alistair Sellar,Catherine A. Senior,I. Totterdell,Anne Verhoef,Pier Luigi Vidale,Andy Wiltshire +51 more
TL;DR: The HadGEM2 family of configurations as discussed by the authors includes atmosphere and ocean components, with and without a vertical extension to include a well-resolved stratosphere, and an Earth-System (ES) component which includes dynamic vegetation, ocean biology and atmospheric chemistry.
Journal ArticleDOI
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations
David N. Walters,Anthony J. Baran,Anthony J. Baran,Ian A. Boutle,M. E. Brooks,Paul Earnshaw,John M. Edwards,Kalli Furtado,Peter Hill,Adrian Lock,James Manners,Cyril J. Morcrette,Jane Mulcahy,Claudio Sanchez,Chris Smith,Rachel Stratton,Warren Tennant,Lorenzo Tomassini,Kwinten Van Weverberg,Simon Vosper,Martin Willett,J. Browse,Andrew C. Bushell,Kenneth S. Carslaw,Mohit Dalvi,Richard Essery,Nicola Gedney,Steven C. Hardiman,Ben Johnson,Colin E. Johnson,Andrew Jones,Colin Jones,Graham Mann,Sean Milton,Heather Rumbold,Alistair Sellar,Masashi Ujiie,Michael Whitall,Keith D. Williams,M. Zerroukat +39 more
TL;DR: The Global Atmosphere 3.0 (GA3.0) as mentioned in this paper is a configuration of the Met Office Unified Model (MetUM) developed for use across climate research and weather prediction activities.
Journal ArticleDOI
Anthropogenic climate change for 1860 to 2100 simulated with the HadCM3 model under updated emissions scenarios
T. C. Johns,Jonathan M. Gregory,William Ingram,Colin E. Johnson,A. K. Jones,Jason A. Lowe,John F. B. Mitchell,David L. Roberts,David M. H. Sexton,David Stevenson,Simon F. B. Tett,Margaret J. Woodage +11 more
TL;DR: In this paper, the authors examined the anthropogenically forced climate response over the historical period, 1860 to present, and projected response to 2100, using updated emissions scenarios and an improved coupled model (HadCM3) that does not use flux adjustments.
Journal ArticleDOI
Estimation of natural and anthropogenic contributions to twentieth century temperature change
Simon F. B. Tett,Gareth S. Jones,Peter A. Stott,David C. Hill,David C. Hill,John F. B. Mitchell,Myles R. Allen,Myles R. Allen,William Ingram,T. C. Johns,Colin E. Johnson,A. K. Jones,David L. Roberts,David M. H. Sexton,Margaret J. Woodage +14 more
TL;DR: In this article, the authors used a coupled atmosphere/ocean general circulation model to simulate the climatic response to natural and anthropogenic forcings from 1860 to 1997, and found that the early twentieth century warming can best be explained by a combination of warming due to increases in greenhouse gases and natural forcing, some cooling due to other anthropogenic forcing, and a substantial, but not implausible, contribution from internal variability.
Journal ArticleDOI
UKESM1: Description and Evaluation of the U.K. Earth System Model
Alistair Sellar,Colin Jones,Jane Mulcahy,Yongming Tang,Andrew Yool,Andy Wiltshire,Fiona M. O'Connor,Marc Stringer,Richard Hill,Julien Palmieri,S. Woodward,Lee de Mora,Till Kuhlbrodt,S. T. Rumbold,Douglas I. Kelley,Rich Ellis,Colin E. Johnson,Jeremy Walton,Nathan Luke Abraham,Martin B. Andrews,Timothy Andrews,Alexander T. Archibald,Ségolène Berthou,Eleanor J. Burke,Ed Blockley,Kenneth S. Carslaw,Mohit Dalvi,John M. Edwards,Gerd A. Folberth,Nicola Gedney,Paul T. Griffiths,Anna B. Harper,Maggie A. Hendry,Alan J. Hewitt,Ben Johnson,Andrew Jones,Chris D. Jones,James Keeble,Spencer Liddicoat,Olaf Morgenstern,Robert J. Parker,Valeriu Predoi,Eddy Robertson,Antony Siahaan,Robin S. Smith,Ranjini Swaminathan,Ranjini Swaminathan,Matthew T. Woodhouse,Guang Zeng,M. Zerroukat +49 more
TL;DR: The United Kingdom Earth System Model UKESM1 as discussed by the authors was developed and tuned to achieve acceptable performance in key physical and Earth system quantities, and discuss the challenges involved in mitigating biases in a model with complex connections between its components.