Publications
Climate negotiations
The Emissions Gap Report 2021 Oct 2021 - This is the twelfth edition of the United Nations Environment Programme (UNEP) Emissions Gap Report. It assesses the gap between estimated future global greenhouse gas (GHG) emissions if countries implement their climate mitigation pledges and the global emission levels from least-cost pathways that are aligned with achieving the temperature goals of the Paris Agreement. 
Implications of Paris Agreement on the national emissions reduction efforts May 2021 - This report discusses inputs for countries to set their mitigation targets under the Paris Agreement, so that those targets are in line with long-term temperature limit.
The Emissions Gap Report 2020 Dec 2020 - The 11th edition of the UNEP Emissions Gap Report assesses the gap between “where we are likely to be and where we need to be”, which has become known as the ‘emissions gap’. Additionally, this year it examines two areas that are highly relevant for bridging the gap, especially during the COVID-19 pandemic: the shipping and aviation sectors.
Correcting course: the emission reduction potential of international cooperative initiatives Aug 2020 - This article quantifies the aggregate potential of greenhouse gas (GHG) emissions reductions in 2030 from full implementation of 17 major international cooperative initiatives.
Fair contributions versus fastest possible reductions Aug 2020 - In this paper with Fraunhofer ISI, we argue that only the combination of assessments on "what is a fair contribution" and of "how much could emissions technically be reduced" can give sufficient guidance for national greenhouse gas emissions targets that are in line with the Paris Agreement.
Beyond national climate action: the impact of region, city, and business commitments on global greenhouse gas emissions Mar 2020 - This article quantifies the net aggregate impact in 2030 of commitments by individual non-state and subnational actors (e.g. regions, cities and businesses, collectively referred to as ‘NSAs’) to reduce greenhouse gas (GHG) emissions.
The Emissions Gap Report 2019: A UN Environment Synthesis Report Nov 2019 - This is the tenth edition of the United Nations Environment Programme (UNEP) Emissions Gap Report. It provides the latest assessment of scientific studies on current and estimated future greenhouse gas (GHG) emissions and compares these with the emission levels permissible for the world to progress on a least-cost pathway to achieve the goals of the Paris Agreement.
Global climate action from cities, regions and businesses – 2019 Sep 2019 - This report is the second global analysis of local and regional government and corporate climate contributions, updating “Global Climate Action from Cities, Regions, and Companies” launched at the 2018 Global Climate Action Summit.
How could the concept of an “overall mitigation in global emissions” (OMGE) be operationalized under the Paris Agreement? Jun 2019 - This paper addresses questions that have been raised in relation to OMGE. It draws on a study conducted by Lambert Schneider and NewClimate Institute.
The Emissions Gap Report 2018: A UN Environment Synthesis Report Nov 2018 - This is the 9th edition of the UN Environment Emissions Gap Report. It assesses the latest scientific studies on current and estimated future greenhouse gas emissions and compares these with the emission levels permissible for the world to progress on a least-cost pathway to achieve the goals of the Paris Agreement.