Copernicus Publications and the Executive editors of HGSS thank the following colleagues very much for their work in reviewing the manuscripts published in the journal volume 6, 2015.
- Kusumita Arora
- David Branagan
- Andrew Carleton
- Barry Cooper
- Vincent Courtillot
- Charles Deehr
- Ronald E Doel
- Karl-Heinz Glassmeier
- Mott Greene
- Richard Holme
- Georg Kaser
- Nandini Nagarajan
- Anatoliy Nusinov
- José M. Vaquero
- Hans Volkert
- Tom Woods