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The Second Austrian Assessment Report on Climate Change (AAR2) by the Austrian Panel on Climate Change (APCC) of the Climate Change Center Austria (CCCA) is a systematic review of the Scientific consensus on climate change with regard to the effects on Austria. The report is based on the assessment reports of the Intergovernmental Panel on Climate Change, the first report of the APCC was published in 2014. On several hundred pages, the APCC Assessment Report summarizes the current state of scientific knowledge on global warming (climate change), its consequences for Austria, Climate change mitigation and possible adaptation strategies to global warming for Austria.[1][2][3][4]
The AAR2 was published in Vienna on June 17, 2025. It was written by around 200 authors who evaluated more than 5000 scientific articles, manuscripts and studies over several years and considered over 4000 comments from more than 150 external reviewers in a multi-stage peer review process.[5][6]
Background
[edit]Based on the Intergovernmental Panel on Climate Change (IPCC), the Austrian Panel on Climate Change (APCC) was established in 2014 under the auspices of the CCCA. It published the first Austrian Assessment Report on Climate Change (AAR14) in 2014.
On July 7, 2022, the APCC published the list of lead authors of the Second Austrian Assessment Report. The co-chairs of the report are Daniel Huppmann, Margreth Keiler, Keywan Riahi and Harald Rieder.[7]
The full report is approximately 800 pages long. To write the report, the approximately 200 authors reviewed more than 5000 scientific articles, manuscripts and studies listed on the Web of Science that have been published since the publication of the First Assessment Report in 2014.[8][9]
The report was funded by the Climate and Energy Fund with funds from the Ministry of Climate Action.[1]
As with the IPCC reports, the AAR2 does not make any explicit policy recommendations. Instead, it presents and compares different options for reducing greenhouse gas emissions and adapting to the consequences of climate change. Particular attention is paid to possible synergies and conflicting goals between climate protection and adaptation measures on the one hand and other social goals, in particular the UN Sustainable Development Goals (SDGs), on the other.[9][10]
Structure
[edit]The Austrian Assessment Report follows the structure of the Intergovernmental Panel on Climate Change. The participants are divided into the following groups:[11]
- Co-Chairs
- Coordinating Lead Authors (CLA)
- Lead Authors (LA)
- Contributing Authors (CA)
- Review Editors (RE)
- External Reviewers
- Technical Support Unit (TSU)
- Chapter Scientists (CS)
Chapters
[edit]The report is divided in eight chapters:[11]
- Chapter 1: Physical and ecological manifestation of climate change in Austria
- Chapter 2: Climate change, land use, ecosystem services and health
- Chapter 3: Built environments and mobility
- Chapter 4: Provision of goods and services in a climate-resilient economy via materials, energy and work
- Chapter 5: Navigating demand-side transformations to achieve net zero through human decisions and behavior
- Chapter 6: Climate governance: Political, legal, economic and societal aspects
- Chapter 7: The Austrian Alps as multi-dimensional focal area
- Chapter 8: Transformation pathways
Summary for Policymakers
[edit]In addition to the main report, a Summary for Policymakers (SPM) was also published. This is structured according to the following five policy-relevant key questions:[12]
- A. Is Austria on track for climate neutrality?
- B. What are the impacts of climate change in Austria?
- C. Which mitigation options are available?
- D. How can Austria meet climate targets?
- E. Which policies can support effective and equitable climate governance?
The scientific basis for the statements in the Second Austrian Assessment Report on Climate Change (AAR2) presented in the “Summary for Policymakers” is derived from the synthesis of the eight technical chapters of the main report. Based on the calibrated language of the Intergovernmental Panel on Climate Change (IPCC) in the global climate reports, each statement is assigned a confidence level. This provides information on the strength and scope of the underlying scientific evidence and the degree of agreement within the scientific literature.[12]
Literature
[edit]- Huppmann, Daniel; Keiler, Margreth; Riahi, Keywan; Rieder, Harald (2025). "Zweiter Österreichischer Sachstandsbericht zum Klimawandel | AAR2 - Zusammenfassung für die politische Entscheidungsfindung". ISBN (in German): 1–42. doi:10.1553/aar2-spm-de.
External links
[edit]- Second Austrian Assessment Report on Climate Change (online version of the report) on the website of the Austrian Academy of Sciences
- Official project website of the AAR2 on the APCC website
References
[edit]- ^ a b Sill, Tamara; ORF.at; Nagiller, Juliane; Wissen, O. R. F. (2025-06-17). "Klimakrise in Österreich: Bericht legt volle Tragweite offen". news.ORF.at (in German). Retrieved 2025-07-07.
- ^ "3,1 Grad plus: Was der neue Klimabericht über Österreich enthüllt". DER STANDARD (in Austrian German). Retrieved 2025-07-07.
- ^ Mayrhofer, 17 06 2025 um 11:01 von Christine (2025-06-17). ""Föderalismus ist für die Erreichung der Klimaziele nicht förderlich"". Die Presse (in German). Retrieved 2025-07-07.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ "Klimabericht: Investitionen gegen System-Kippen". vol.at. 2025-06-17. Retrieved 2025-07-07.
- ^ "Österreich und der Klimawandel: Wie kommen wir da wieder raus?". FALTER (in Austrian German). 2025-06-17. Retrieved 2025-07-07.
- ^ "36 Grad und immer heißer | Wiener Zeitung". www.wienerzeitung.at (in German). Retrieved 2025-07-07.
- ^ Presseportal, Universität Innsbruck (2022-07-07). "Klimabericht für Österreich: Handeln auf breiter - Universität Innsbruck". Universität Innsbruck Presseportal (in German). Retrieved 2025-07-07.
- ^ "Studie zeigt: Österreich vom Klimawandel besonders betroffen". www.kleinezeitung.at (in German). 2025-06-17. Retrieved 2025-07-07.
- ^ a b BVZ.at, APA / NÖN at und APA / (2025-06-17). "Klimabericht zeigt großen Handlungsbedarf auf". www.noen.at (in German). Retrieved 2025-07-07.
- ^ Kugler, 21 06 2025 um 18:59 von Martin (2025-06-20). "Wie Klimaschutz scheitert". Die Presse (in German). Retrieved 2025-07-07.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ a b "Zweiter Österreichischer Sachstandsbericht zum Klimawandel | AAR2". Zweiter Österreichischer Sachstandsbericht zum Klimawandel | AAR2. Retrieved 2025-07-07.
- ^ a b "Zweiter Österreichischer Sachstandsbericht zum Klimawandel | AAR2". Zweiter Österreichischer Sachstandsbericht zum Klimawandel | AAR2. Retrieved 2025-07-07.
