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Internalising Health-Economic Impacts of Air Pollution into Climate Policy: A Global Modelling Study

21 Aprile 2022 @ 15:00 - 16:00

Thursday 21 April 2022

h. 3:00 – 4:00 pm CEST

Language: English

Speaker: Lara Aleluia Reis, RFF-CMCC European Institute on Economics and the Environment (EIEE), Centro Euro-Mediterraneo sui Cambiamenti Climatici

Moderator: Johannes Emmerling, RFF-CMCC European Institute on Economics and the Environment (EIEE), Centro Euro-Mediterraneo sui Cambiamenti Climatici

Climate change and air pollution are two major societal problems. Previous assessments have looked at the co-benefits of climate policies for air pollution, but few have optimised air pollution benefits. In the study presented, authors lay out a modelling framework that internalises air pollution’s economic impacts on human mortality, while considering climate constraints and aerosol feedback.
The researchers developed a modelling framework based on an integrated assessment model (World Induced Technical Change Hybrid) designed to assess optimal climate change mitigation policies. They included structural and end-of-pipe measures in a detailed process integrated assessment model, that is hard-linked to air pollution and climate models. They analysed a large set of baseline scenarios, including five shared socioeconomic pathways. The shared socioeconomic pathways scenarios were also tested with three different levels of value per statistical life and were combined with the Paris Agreement temperature targets (2°C and 1.5°C).

Results showed that welfare-maximising policies accounting for air pollution benefits reduces premature mortality by 1.62 million deaths annually which is three times greater than the co-benefits of climate policies. Authors alsofind that global and regional welfare increases when air pollution impacts are internalised, with no negative repercussions on global inequality. Air pollution control strategies are found to be an important complement to structural emission reductions. Accounting for air pollution impacts reduces climate mitigation costs and inequality and increases global and regional welfare. Results are robust to a broad set of scenarios and assumptions, including debated normative choices on how to value improved health.

This webinar is part of the NAVIGATE Webinar Series organized by the NAVIGATE project (and hosted by RFF-CMCC EIEE) to improve current generation of IAMs, providing insight into how long-term climate goals can translate into short-term policy action, and how countries and sectors can work in concert to implement the Paris Agreement. NAVIGATE organizes webinars hosting scientists and outstanding experts who are happy to share their knowledge about some important topics for the project. NAVIGATE  a project funded by the European Union’s Horizon 2020 programme (Grant Agreement N. 821124) and carried out by a consortium of 15 European organisations and two others BRIC countries organizations (Brazil and China). It aims to develop the Next generation of AdVanced InteGrated Assessment modelling to support climaTE policy making. It will critically improve the capability of Integrated Assessment Models (IAMs) to inform the design and evaluation of climate policies by targeting major advancements in two areas: describing transformative change in the economy, in technology and in consumer goods and services, and describing distributional impacts of climate change and climate policy.

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21 Aprile 2022
15:00 - 16:00