If the first author is affiliated to one of the institutes of the ETH Zurich, the article processing charges will be settled automatically between Copernicus Publications and the ETH-Bibliothek. This arrangement is valid for any submission after 1 October 2014 (receipt of electronic manuscript files).

The institutional agreement with the Freie Universität Berlin (FU Berlin) covers papers with article processing charges up to €2,000 (gross) if the first affiliation of the corresponding author is FU Berlin. The APCs will then be settled directly between Copernicus Publications and the university library of the FU Berlin. If APCs exceed €2,000 (gross), FU Berlin will not cover any of the costs. This arrangement is valid for submissions after 7 February 2018 (receipt of electronic manuscript files).

If the first author is affiliated to one of the following research centres of the Helmholtz Association, the article processing charges will be settled automatically between Copernicus Publications and the Helmholtz Centres. Contact your local library to learn more about the internal procedure at your centre:

- Deutsches Elektronen-Synchrotron – DESY (valid for submissions after 1 May 2012)
- Deutsches Zentrum für Luft- und Raumfahrt – DLR (valid for submissions after 1 November 2012)
- Forschungszentrum Jülich (valid for submissions after 1 January 2012)
- German Research Centre for Geosciences – GFZ (valid for submissions after 1 January 2012)
- Helmholtz Centre for Environmental Research – UFZ (valid for submissions after 1 January 2012)
- Helmholtz Centre for Ocean Research Kiel – GEOMAR (valid for submissions after 1 August 2012)
- Helmholtz Centre for Polar and Marine Research – AWI (valid for submissions after 1 January 2016)
- Helmholtz-Zentrum Dresden-Rossendorf – HZDR (valid for submissions after 1 October 2012)
- Helmholtz-Zentrum Geesthacht – HZG (valid for submissions after 1 January 2013)
- Karlsruhe Institute of Technology – KIT (valid for submissions after 1 May 2012)

From 1 December 2018 to 30 November 2019, the Helsinki University Library will be providing a publication fund for articles published with Copernicus Publications. The fund is available to all corresponding authors affiliated with Helsinki University on a first-come, first-served basis. Submitting a manuscript holds out the prospect to the corresponding author that their manuscript publication will be settled by the Helsinki University Library prepayment. However, if no funds are available at the time of the publication, Copernicus Publications will charge the authors for the APCs. The Helsinki University Library can always settle the pending amount and then advise Copernicus Publications not to invoice the authors.

If the corresponding author is affiliated to one of the institutes of the Iowa State University, the article processing charges will be settled automatically between Copernicus Publications and the Iowa State University Library. This arrangement is valid for any submission after 10 January 2019 (receipt of electronic manuscript files).

The institutional agreement with the Leibniz Association's Open Access Publishing Fund covers papers with article processing charges (APCs) up to €2,000 (gross) if the corresponding author of the paper is affiliated to one of the 53 participating Leibniz institutions:

- Leibniz Institute for Agricultural Engineering and Bioeconomy
- Leibniz Institute for Prevention Research and Epidemiology
- Bernhard Nocht Institute for Tropical Medicine
- German Institute for Adult Education – Leibniz Centre for Lifelong Learning
- German Institute of Human Nutrition
- German Institute for International Educational Research
- German Primate Center – Leibniz Institute for Primate Research
- German Rheumatism Research Centre Berlin
- Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures
- Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik
- Leibniz Institute for Farm Animal Biology
- Leibniz Institute on Aging – Fritz Lipmann Institute
- Leibniz-Institut für Molekulare Pharmakologie
- Research Center Borstel – Leibniz-Center for Medecine and Biosciences
- Georg Eckert Institute for International Textbook Research
- Leibniz Institute for the Social Sciences
- German Institute of Global and Area Studies
- Heinrich Pette Institute – Leibniz Institute for Experimental Virology
- Peace Research Institute Frankfurt
- Leibniz Institute of Agricultural Development in Transition Economies
- Leibniz Institute of Atmospheric Physics at the Rostock University
- Institute for the German Language
- Leibniz Research Center for Working Environment and Human Factors
- Leibniz Institute for Solid State and Materials Research Dresden
- Institute for the World Economy
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries
- Leibniz Institute of Vegetable and Ornamental Crops
- Innovations for High Performance Microelectronics – Institut für innovative Mikroelektronik
- INM – Leibniz-Institute for New Materials
- Leibniz Institute for Plasma Science and Technology
- Leibniz Institute of Ecological Urban And Regional Development
- Leibniz Institute for Baltic Sea Research Warnemünde
- Leibniz Institute of Plant Biochemistry
- Leibniz Institute of Photonic Technology
- Leibniz Institute of Plant Genetics and Crop Plant Research
- Leibniz Institute for Science and Mathematics Education
- Leibniz-Institut für Analytische Wissenschaften – ISAS – e.V.
- Leibniz Institute for Zoo and Wildlife Research
- Leibniz Institute for Food Systems Biology at the Technical University of Munich
- Leibniz Institute for Educational Trajectories
- Leibniz Institute for Catalysis e.V. at the University of Rostock
- Leibniz Institute for Neurobiology
- Museum für Naturkunde – Leibniz Institute for Research on Evolution and Biodiversity
- Potsdam Institute for Climate Impact Research (special regulation: the PIK also covers APCs > €2,000 gross. The respective articles will be settled directly between PIK and Copernicus Publications.)
- RWI – Leibniz Institute for Economic Research
- Senckenberg Gesellschaft für Naturforschung
- German National Library of Science and Technology – Leibniz Information Centre for Science and Technology
- Leibniz Institute for Tropospheric Research
- Weierstrass Institute for Applied Analysis and Stochastics
- Leibniz Centre for Agricultural Landscape Research
- Leibniz-Centre General Linguistics
- Research Museum Alexander Koenig – Leibniz Institute for Animal Biodiversity
- Leibniz Centre for Tropical Marine Research

The APCs will then be settled directly between Copernicus Publications and Leibniz Association's Open Access Publishing Fund. If APCs exceed €2,000 (gross), Leibniz Association's Open Access Publishing Fund will not cover any of the costs. If the fund is exhausted at the time of publication, Copernicus Publications will charge the authors for the APCs. The arrangement is valid for submissions after 1 May 2018 (receipt of electronic manuscript files).

The institutional agreement with the TIB (Technische Informationsbibliothek) covers papers with article processing charges (APCs) up to €2,000 (gross) if the corresponding author of the paper is affiliated to the Leibniz Universität Hannover. The APCs will then be settled directly between Copernicus Publications and the TIB. If APCs exceed €2,000 (gross), TIB will not cover any of the costs. The arrangement is valid for submissions after 1 January 2016 (receipt of electronic manuscript files).

If the corresponding author (first author until 31 December 2016) is affiliated to one of the research units of the Max Planck Society, the article processing charges will be settled automatically between Copernicus Publications and the Max Planck Society.

14 scientific institutions from Germany have joined the national opt-in consortium for the central payment processing of APCs for articles of all journals. The consortium enables corresponding authors, affiliated with the participating institutions, to publish free of charge for them. The articles are financed by a prepayment deposited at the beginning of each year (2019 and 2020). This agreement covers papers with article processing charges up to €2,000 (gross). If APCs exceed €2,000 (gross), the members of the consortium will not cover any of the costs. This arrangement is valid for submissions after 1 January 2019 (receipt of electronic manuscript files) from authors of the following participating institutions:

- Bayreuth University
- Bielefeld University
- Clausthal University of Technology
- Jade University of Applied Sciences
- Johannes Gutenberg University Mainz
- Julius Maximilian University of Würzburg
- Justus Liebig University Giessen
- Osnabrück University
- Ruhr-University Bochum
- TU Berlin
- Technical University of Braunschweig
- University of Göttingen
- University of Stuttgart
- University of Tübingen

If the corresponding author is affiliated to one of the institutes of the Stockholm University, the article processing charges will be settled automatically between Copernicus Publications and the Stockholm University. This arrangement is valid for any submission after 24 January 2018 (receipt of electronic manuscript files).

The TU Darmstadt promotes publication of research articles in open-access journals with an open-access publishing fund for its members, which is supported by the German Research Foundation (DFG). The institutional agreement with Technische Universität Darmstadt covers papers with article processing charges up to €2,000 (gross) if the corresponding author of the paper is affiliated to TU Darmstadt. The APCs are then settled directly between Copernicus Publications and the university library of the TU Darmstadt. If APCs exceed €2,000 (gross), the central open-access publishing fund of TU Darmstadt will not cover any of the costs. This arrangement is valid for submissions after 1 January 2017 (receipt of electronic manuscript files). For further information about open access at TU Darmstadt, please visit the library website https://www.ulb.tu-darmstadt.de/oa-fonds or contact oa-fonds@ulb.tu-darmstadt.de.

In 2018, the TU Delft Library provided a publication fund for articles published with Copernicus Publications. The remainder of the 2018 fund will be used for 2019. The fund is available to all corresponding authors affiliated with TU Delft on a first-come, first-served basis. Submitting a manuscript holds out the prospect to the corresponding author that their manuscript publication will be settled by the TU Delft prepayment. However, if no funds are available at the time of the publication, Copernicus Publications will charge the authors for the APCs. The TU Delft can always settle the pending amount and then advise Copernicus Publications not to invoice the authors.

The institutional agreement with the Technical University Munich (Technische Universität München, TUM) covers papers with article processing charges up to €2,000 (gross) if the corresponding author of the paper is affiliated to the TUM. The APCs will then be settled directly between Copernicus Publications and the university library of the TUM. If APCs exceed €2,000 (gross), TUM will not cover any of the costs. This arrangement is valid for submissions after 1 January 2015 (receipt of electronic manuscript files).

If the first author is affiliated to one of the institutes of the University of Bremen, the article processing charges will be settled automatically between Copernicus Publications and the SUUB (Staats- und Universitätsbibliothek Bremen). This arrangement is valid for any submission after 1 April 2014 (receipt of electronic manuscript files).

If the first author is affiliated to the University of Potsdam, the article processing charges for category 1 and 2 papers will be settled automatically between Copernicus Publications and the Potsdam University Library. The Potsdam University Library covers papers with article processing charges up to €2,000 (gross). Where the APCs exceed this amount, the remainder of the payment will be issued to the first author. This arrangement is valid for any submission after 1 July 2015 (receipt of electronic manuscript files).
Please note: If the author has not submitted an application for the University of Potsdam's open-access publication fund or if the application is not accepted, the author will receive an invoice from the faculty later on.

The German Research Foundation DFG supports publication charges with €750 per year. This support can also be accumulated over the 3-year period of funding. Please see DFG's FAQs on open access for further information.

Horizon 2020 is the EU Research and Innovation programme. All projects receiving Horizon 2020 funding will have the obligation to make sure any peer-reviewed journal article they publish is openly accessible, free of charge.

The Austrian Science Fund (FWF) is Austria's central funding organization for basic research. The FWF provides grants to cover the costs of peer-reviewed publications that result from projects supported by the FWF, up to a limit of 3 years after conclusion of the project. Leaders and collaborators of all FWF projects of any discipline are the target group of this support.

The following is a list of universities that are supported by the DFG Programme "Open Access Publizieren" and therefore provide funds for open-access publications. Please check whether your institution supports the costs for open-access publishing.

- Albert-Ludwigs-Universität Freiburg
- Carl von Ossietzky Universität Oldenburg
- Charité – Universitätsmedizin Berlin
- Eberhard-Karls-Universität Tübingen
- Ernst-Moritz-Arndt-Universität Greifswald
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- Goethe-Universität Frankfurt/M.
- Hochschule Darmstadt
- Hochschule für angewandte Wissenschaft München
- Humboldt-Universität zu Berlin
- Johannes Gutenberg-Universität Mainz
- Julius-Maximilians-Universität Würzburg
- Justus-Liebig-Universität Gießen
- Katholische Universität Eichstätt-Ingolstadt
- Martin-Luther-Universität Halle-Wittenberg
- Otto-Friedrich-Universität Bamberg
- Philipps Universität Marburg
- Ruhr Universität Bochum
- Ruprecht-Karls-Universität Heidelberg
- TH Deggendorf
- Tierärztliche Hochschule Hannover
- TU Berlin
- TU Chemnitz
- TU Clausthal-Zellerfeld
- TU Dortmund
- TU Dresden
- TU Hamburg Harburg
- TU Ilmenau
- TU Kaiserslautern
- Universität Bayreuth
- Universität Bielefeld
- Universität Duisburg-Essen
- Universität Kassel
- Universität Konstanz
- Universität Leipzig
- Universität Osnabrück
- Universität Regensburg
- Universität Rostock
- Universität Siegen
- Universität Stuttgart
- Universität Trier
- Westfälische Wilhelms-Universität Münster