Quantifying global carbon dioxide removal deployment

19455 7 104770 2 319037 document 104770 Powis_2023_Environ._Res._Lett._18_024022.pdf application/pdf ca95ebb6767d4eaf8c3d94aa87868f53 MD5 1858119 2024-01-30 12:57:57 https://pure.iiasa.ac.at/id/eprint/19455/1/Powis_2023_Environ._Res._Lett._18_024022.pdf 19455 1 1 application/pdf text en public cc_by_4

Powis_2023_Environ._Res._Lett._18_024022.pdf

published 104771 1 319044 document 104771 indexcodes.txt text/x-c++ 15cb2518475d01d4e99e1a80e3722e62 MD5 12736 2024-01-30 13:08:08 https://pure.iiasa.ac.at/id/eprint/19455/2/indexcodes.txt 19455 2 2 text/x-c++ other Generate index codes conversion from text to indexcodes en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/104770 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/104770 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/104770 archive 353 disk0/00/01/94/55 2024-01-30 13:02:31 2024-01-30 13:02:31 2024-01-30 13:02:31 article show Powis C.M. Smith S.M. Minx J.C. Gasser T. 2136 0000-0003-4882-2647 Quantifying global carbon dioxide removal deployment pub ASA EM ECE IACC Despite the importance of carbon dioxide removal (CDR) in most climate change mitigation scenarios that limit warming to well below 2 °C, the study of CDR is still a nascent field with basic questions to be resolved. Crucially, it is not known how much CDR is currently deployed at a global scale, nor how that compares to mitigation scenario estimates. Here, we address this problem by developing an estimate of global current CDR activity. We draw on national greenhouse gas inventory data combined with CDR registries and commercial databases to estimate that global anthropogenic activity presently generates ∼1985 MtCO2yr−1 of atmospheric removals. Almost all of these—1983 MtCO2yr−1—are removals from land-use, land-use change and forestry. Non-land-management CDR projects such as bioenergy with carbon capture and storage, direct air capture with carbon capture and storage and biochar remove only about 2 MtCO2yr−1. We compare this estimate with Shared Socioeconomic Pathways projections of CDR deployed in 'well-below 2°C' mitigation pathways. In so doing we demonstrate current CDR deployment would need to grow exponentially to keep the world aligned with most 'well-below 2°C' scenarios, which see CDR deployment growing between 75% and 100% per year between 2020 and 2030, adding ∼300–2500 MtCO2 in total CDR capacity. To conclude we discuss uncertainties related to our estimates, and suggest priorities for the future collection and management of CDR data, particularly related to the role of the land sink in generating CDR. 2023-01 published Institute of Physics Publishing (IOP) doi:10.1088/1748-9326/acb450 2885 public Environmental Research Letters 18 2 024022 TRUE 1748-9326 Permafrost thaw and the changing arctic coast: science for socio-economic adaptation (Nunataryuk, H2020 773421) GeoEngineering and NegatIve Emissions pathways in Europe (GENIE, H2020 951542) yes info:eu-repo/grantAgreement/EC/H2020/773421/EU//Nunataryuk; info:eu-repo/grantAgreement/EC/H2020/951542/EU//GENIE info:eu-repo/semantics/article info:eu-repo/semantics/openAccess