General rule
Members of the Oeschger Centre have a double affiliation: They are members of their institute/department and of the Oeschger Centre at the same time.
Suggested affiliation quotation: "xx is professor for yy at the University of Bern and member of the Oeschger Centre for Climate Change Research."
Terminology
In English: "Oeschger Centre for Climate Change Research, University of Bern"; short version: "Oeschger Centre, University of Bern".
In German "Oeschger-Zentrum für Klimaforschung, Universität Bern"; short version: "Oeschger-Zentrum, Universität Bern".
Affiliation (publications, talks, etc.)
"Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland"
Or: "Oeschger Centre for Climate Change Research and Institute of XY, University of Bern, Bern, Switzerland"
E.g.: Swiss Federal Research Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Acknowledgements (if applicable)
"This work was supported by the Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland."
Or: "This study was funded by the Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland."