The OS editorial board, the European Geosciences Union, and Copernicus Publications thank the following colleagues very much for their work in reviewing the manuscripts published in the journal volume 5, 2009.
- Sheldon Bacon
- Chris Balfour
- Alexander Barth
- David Behringer
- Marc Bocquet
- Don Boyer
- Pierre Brasseur
- Bruno Buongiorno Nardelli
- Piers Chapman
- John Church
- David Cromwell
- Eric D'Asaro
- Agatha De Boer
- Thomas Delworth
- John Donners
- Sybren Drijfhout
- Katja Fennel
- Unai Ganzedo
- Gwyn Griffiths
- xinyu guo
- Akira Harashima
- Daniel Hayes
- Greg Holloway
- Chris Hughes
- Graham Hughes
- David Hydes
- Noel Keenlyside
- John M. Klinck
- Silke Kroeger
- Bernard Le Cann
- Julia Levin
- George Luther
- Mathew Maltrud
- Evin McGovern
- Michael McIntyre
- Miles McPhee
- David Meldrum
- Steinke Michael
- Yves Morel
- Peter Oke
- Claudia Pasquero
- Brian Powell
- Duncan Purdie
- Eric Schulz
- William Shaw
- John Simpson
- Denise Smythe-Wright
- Sarantis Sofianos
- Petra Spitzer
- Janet Sprintall
- Jaqueline Stefels
- Andreas Sterl
- David Stevens
- Gordon Swaters
- Andrew Thompson
- Shiyu Wang
- Guy Williams
- Dan Wright
- Michiyo Yamamoto-Kawai
- Donglian Yuan
- Rong Zhang
- Jiang Zhu