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Ten new insights in climate science 2020- A horizon scan

  • Erik Pihl
  • , Eva Alfredsson
  • , Magnus Bengtsson
  • , Kathryn J. Bowen
  • , Vanesa Cástan Broto
  • , Kuei Tien Chou
  • , Helen Cleugh
  • , Kristie Ebi
  • , Clea M. Edwards
  • , Eleanor Fisher
  • , Pierre Friedlingstein
  • , Alex Godoy-Faúndez
  • , Mukesh Gupta
  • , Alexandra R. Harrington
  • , Katie Hayes
  • , Bronwyn M. Hayward
  • , Sophie R. Hebden
  • , Thomas Hickmann
  • , Gustaf Hugelius
  • , Tatiana Ilyina
  • Robert B. Jackson, Trevor F. Keenan, Ria A. Lambino, Sebastian Leuzinger, Mikael Malmaeus, Robert I. McDonald, Celia McMichael, Clark A. Miller, Matteo Muratori, Nidhi Nagabhatla, Harini Nagendra, Cristian Passarello, Josep Penuelas, Julia Pongratz, Johan Rockström, Patricia Romero-Lankao, Joyashree Roy, Adam A. Scaife, Peter Schlosser, Edward Schuur, Michelle Scobie, Steven C. Sherwood, Giles B. Sioen, Jakob Skovgaard, Edgardo A. Sobenes Obregon*, Sebastian Sonntag, Joachim H. Spangenberg, Otto Spijkers, Leena Srivastava, Detlef P. Van Vuuren
*Corresponding author for this work
  • Future Earth
  • KTH Royal Institute of Technology
  • Hot or Cool Institute
  • Australian National University
  • University of Sheffield
  • National Taiwan University
  • CSIRO
  • University of Washington
  • Arizona State University
  • Nordic Africa Institute
  • University of Exeter
  • Universidad del Desarrollo
  • Asian University for Women
  • Center for International Sustainable Development Law
  • Fulbright Canada Foundation
  • Albany Law School
  • Health Canada
  • University of Canterbury
  • University of Surrey
  • Stockholm University
  • Max Planck Institute for Meteorology
  • Stanford University
  • University of California at Berkeley
  • Lawrence Berkeley National Laboratory
  • National Institutes for the Humanities, Research Institute for Humanity and Nature
  • Auckland University of Technology
  • IVL Swedish Environmental Research Institute
  • University of Melbourne
  • National Renewable Energy Laboratory
  • United Nations University
  • McMaster University
  • Azim Premji University
  • Future Earth Global Secretariat
  • CSIC
  • Ludwig Maximilian University of Munich
  • University of Potsdam
  • The University of Chicago
  • Asian Institute of Technology
  • Jadavpur University
  • Met Office
  • Northern Arizona University
  • The University of the West Indies
  • University of New South Wales
  • Future Earth Global Secretariat
  • National Institute for Environmental Studies of Japan
  • Lund University
  • Independent Consultant in Public International Law
  • Helmholtz-Zentrum Geesthacht - Centre for Materials and Coastal Research
  • Sustainable Europe Research Institute SERI Germany
  • International Institute for Applied Systems Analysis, Laxenburg

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Non-technical summary
We summarize some of the past year's most important findings within climate change-related research. New research has improved our understanding of Earth's sensitivity to carbon dioxide, finds that permafrost thaw could release more carbon emissions than expected and that the uptake of carbon in tropical ecosystems is weakening. Adverse impacts on human society include increasing water shortages and impacts on mental health. Options for solutions emerge from rethinking economic models, rights-based litigation, strengthened governance systems and a new social contract. The disruption caused by COVID-19 could be seized as an opportunity for positive change, directing economic stimulus towards sustainable investments.

Technical summary
A synthesis is made of ten fields within climate science where there have been significant advances since mid-2019, through an expert elicitation process with broad disciplinary scope. Findings include: (1) a better understanding of equilibrium climate sensitivity; (2) abrupt thaw as an accelerator of carbon release from permafrost; (3) changes to global and regional land carbon sinks; (4) impacts of climate change on water crises, including equity perspectives; (5) adverse effects on mental health from climate change; (6) immediate effects on climate of the COVID-19 pandemic and requirements for recovery packages to deliver on the Paris Agreement; (7) suggested long-term changes to governance and a social contract to address climate change, learning from the current pandemic, (8) updated positive cost–benefit ratio and new perspectives on the potential for green growth in the short- and long-term perspective; (9) urban electrification as a strategy to move towards low-carbon energy systems and (10) rights-based litigation as an increasingly important method to address climate change, with recent clarifications on the legal standing and representation of future generations.

Social media summary
Stronger permafrost thaw, COVID-19 effects and growing mental health impacts among highlights of latest climate science.
Original languageEnglish
Article numbere5
Pages (from-to)1-18
Number of pages18
JournalGlobal Sustainability
Volume4
DOIs
Publication statusPublished - 2021

Bibliographical note

Publisher Copyright:
Copyright © The Author(s), 2021. Published by Cambridge University Press.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being
  2. SDG 11 - Sustainable Cities and Communities
    SDG 11 Sustainable Cities and Communities
  3. SDG 13 - Climate Action
    SDG 13 Climate Action
  4. SDG 15 - Life on Land
    SDG 15 Life on Land

Keywords

  • climate anxiety
  • climate feedbacks
  • climate governance
  • climate impacts
  • climate litigation
  • climate mitigation
  • climate models
  • climate policy
  • environmental economics
  • future earth
  • risk governance
  • thermokarst
  • urban transformations
  • water stress

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