License and Copyright Agreement
The following licence and copyright agreement is valid for any article published by Copernicus Publications on behalf of the European Geosciences Union (EGU) in the journal Biogeosciences and its discussion forum Biogeosciences Discussions whose original manuscript was received from 10 December 2007 on. The licence and copyright agreement for articles based on manuscripts received before 10 December 2007 can be found here.
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The works published in this journal are distributed under the Creative Commons Attribution 3.0 License. This license does not affect the Crown copyright work, which is re-usable under the Open Government Licence (OGL). The Creative Commons Attribution 3.0 License and the OGL are interoperable and do not conflict with, reduce or limit each other.
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All articles published by Copernicus Publications are licensed under the Creative Commons Attribution 3.0 License (see details above) together with an author copyright. Therefore, there is no need from the publisher's side to allow/confirm a reproduction. We would suggest contacting the author to inform him/her about the further usage of the material. But as the author decided to publish the scientific results under the "CC-BY" license, he/she decided to share the work under the condition that the original authors must be given credit.