This is a special issue of Science of Climate Change which contains extended abstracts from the 4th Nordic Climate Conference which took place in Copenhagen September 14-15, 2023. The previous Nordic Conferences were held in Stockholm October 7-9 2016, Göteborg, February 16- 17 2018, and in Oslo October 18-19 2019. Proceedings from the Oslo-conference are published in SCC Vol 2.1 (2022).
At the Oslo-conference it was announced that the next Nordic conference should be held in Copenhagen the following year with the Danish Parliament (Folketinget) as venue. However, due to restrictions on travel and meeting during the Covid pandemic, no meeting could be held in 2020 – 2022. When the meeting was finally announced in 2023, the SCC got the permission to collect and publish abstract from the conference. The collection and editing of abstracts were done by Stein Bergsmark and is presented in this special issue of SCC.
For the main conference in the Parliament September 15, we publish in the following pages the program for the main conference and the welcome address by the meeting organizer Karl-Iver Dahl Madsen.
The day before the main conference, September 14, a preconference seminar took place at the Danish Technical University, Lyngby. From this event we publish an opening speech by Jens Olaf Pepke Pedersen and in total 11 abstracts in the same sequence as the program schedule.
In this issue we also include an article about ice in the Artic by Alan Astrup Jensen, who had taken notes of the dates with minimum yearly Arctic ice for a long time. This article was inspired by talks at the seminar.
We also include a book review by Tege Tornvall The Frozen View of the IPCC, which was the main topic on the conference, and also sold at the main conference.
Jan-Erik Solheim and Stein Storlie Bergsmark Editors.
The Editorial Board consists of Stein Storlie Bergsmark, Ole Henrik Ellestad, Hermann
Harde, Martin Hovland, Ole Humlum, Olav Martin Kvalheim and Jan- Erik Solheim.