1. National Center for Atmospheric Research; Boulder Colorado USA
2. Department of Earth Sciences; Montana State University; Bozeman Montana USA
3. Cooperative Institute for Research in Environmental Sciences; University of Colorado; Boulder Colorado USA
4. Environmental Engineering; University of Newcastle; Callaghan New South Wales Australia
5. Antarctic Research Centre; Victoria University of Wellington; Wellington New Zealand
6. Department of Geography; University of Otago; Dunedin New Zealand
7. National Institute of Water and Atmospheric Research; Christchurch New Zealand