Fiona M O'connor¹, N. Luke Abraham², Alexander T Archibald³, William Collins⁴, M Dalvi⁵, Gerd Folberth⁶, Paul T Griffiths⁷, Catherine Hardacre⁵, Ben Thomas Johnson⁵, Colin Johnson⁸, James M Keeble³, Olaf Morgenstern⁹, Jane Patricia Mulcahy¹⁰, Eddy Robertson⁸, Steven Rumbold¹¹, Alistair Sellar¹, Sungbo Shim¹², Joao Teixeira¹³, Steven Turnock¹⁴, Jonny Williams⁹, Andy Wiltshire¹⁴, Guang Zeng¹⁵ and Colin Jones¹⁴, (1)Met Office Hadley Centre for Climate Science and Services, Exeter, United Kingdom, (2)University of Cambridge, Chemistry, Cambridge, United Kingdom, (3)University of Cambridge, Cambridge, United Kingdom, (4)University of Reading, Reading, RG6, United Kingdom, (5)Met Office, Exeter, United Kingdom, (6)Met Office Hadley center for Climate Change, ESMS, Exeter, United Kingdom, (7)Chemistry Dept, Cambridge, United Kingdom, (8)Met Office Hadley center for Climate Change, Exeter, United Kingdom, (9)National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand, (10)Met Office Hadley Centre for Climate Change, Exeter, United Kingdom, (11)National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom, (12)National Institute of Meteorological Sciences, Climate Research Division, Seogwipo-si, South Korea, (13)UK Met Office, Exeter, United Kingdom, (14)Met Office Hadley Centre, Exeter, United Kingdom, (15)National Institute of Water and Atmospheric Research, Wellington, New Zealand