The CP 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.
- Ayako Abe-Ouchi
- Yarrow Axford
- Eva Bauer
- Liliane Bel
- Christian Bigler
- Victor Brovkin
- Achim Bräuning
- Reinhard Calov
- jose carion
- Don Chambers
- John Church
- Matthew Collins
- Alan Covey
- Michel Crucifix
- Basil Davis
- Nathalie de Noblet
- Jaume Dinarès-Turell
- Ian Fairchild
- Andrey Ganopolski
- Vincent Garreta
- Emilie Gauthier
- Xavier Giraud
- Hugues Goosse
- Emmanuel S. Gritti
- Jeroen Groeneveld
- Christine Hatté
- Bernd J. Haupt
- Alan Haywood
- Prof. Dr. Jucundus Jacobeit
- Alexandra Jahn
- Guy Jalut
- Gonzalo Jiménez-Moreno
- Jed Kaplan
- Ralph Keeling
- Dennis Kent
- Thomas Kleinen
- Peter L. Langen
- Suzanne Leroy
- Dan Lunt
- Valérie Masson-Delmotte
- Anne Mouchet
- Paul G. Myers
- Kerim Nisancioglu
- Didier Paillard
- Won-Kyu Park
- Matthew Peros
- Hans Renssen
- Andy Ridgwell
- Didier Roche
- Denis-Didier Rousseau
- William Ruddiman
- Cindy Shellito
- C K Shum
- Giuseppe Siani
- Daniel Sigman
- Renato Spahni
- Christoph Spötl
- Martin SYKES
- Julia Tindall
- Eli Tziperman
- nicolas Viovy
- Yi Wang
- Heinz Wanner
- Nanne Weber
- Mark Williams
- Pascal Yiou
- Hitoshi Yonenobu