2nd Austrian Assessment Report on Climate Change (AAR2)
Project leader overall project: Climate Change Centre Austria (CCCA)
Project leader University of Innsbruck: Margreth Keiler (Professor at the Department of Geography of the UIBK, Director of the Institute for Interdisciplinary Mountain Research of the Austrian Academy of Sciences)
Project staff (UIBK EEB): Wolfgang Streicher (CLA), Vincent van Karsbergen (LA, CS)
Project partners:
- University of Natural Resources and Life Sciences BOKU, Vienna
- International Institute of Applied Systems Analysis (IIASA), Laxenburg
- University of Innsbruck
Funding organisation: Climate and Energy Fund
Funding amount: 1,133,403 euros
Duration: 01.01.2022 to 30.06.2025
Funding organisation: Austrian Research Promotion Agency (FFG)
Project website: https://aar2.ccca.ac.at
Summary
The report is intended to provide a comprehensive review of scientific research on climate change in Austria and update the contents of the first Austrian Assessment Report published in 2014. In its breadth, the AAR2 goes beyond the special reports published by the Austrian Panel on Climate Change APCC.
The Austrian Assessment Report on Climate Change summarises the current state of research on the topic and its methodology is based on the Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). The first edition of the report was published in 2014, and the 2nd Austrian Assessment Report on Climate Change AAR2 is due to be published in summer 2025.
150 authors, one goal
The AAR2 is a joint effort: more than 150 scientists are writing it, and all facets of climate change are presented in eight chapters: physical principles as well as the changes to be expected as a result of climate change, considerations of the individual economic sectors as well as ideas for emission savings and adaptation options, transformation paths for a climate-neutral society as well as the consideration of Austria's mountain regions as a multidimensional focus area. The aim of the report is to support the social debate on climate change and climate adaptation and to provide a basis for evidence-based policy measures.
Methodology follows the IPCC
In its structure and working process, the AAR2 is modelled on the Intergovernmental Panel on Climate Change (IPCC) Assessment Report. The report analyses scientific findings from relevant publications, and interdisciplinary topics are dealt with in so-called cross-cuts. If there is insufficient scientific evidence relating to Austria on certain issues, findings from studies for other countries are transferred to Austria and expert analyses are included.
The scientific quality of the report is ensured in a multi-stage review process.
Structure of the AAR2

Tasks in the project
Chapter 3: Built Environments andMobility
- Coordinating Lead Authors (CLA): Stefanie Peer, Wolfgang Streicher, Gernot Wagner
- Lead Authors (LA): Amann Wolfgang, Creutzig Felix, Gronalt Manfred, Heinfellner Holger, Hofko Bernhard, Kienberger Stefan, Kleidorfer Manfred, Kranzl lukas, Krellenberg Kerstin, Landgraf Matthias, Obrecht Potrc Tajda, Passer Alexander, Sielker Franziska, van Karsbergen Vincent
- Chapter Scientist (CS): van Karsbergen Vincent