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Broad threat to humanity from cumulative climate hazards intensified by greenhouse gas emissions

Author(s)
Mora, Camilo; Spirandelli, Daniele; Franklin, Erik C.; Lynham, John; Kantar, Michael B.; Miles, Wendy; Smith, Charlotte Z.; Freel, Kelle; Moy, Jade; Louis, Leo V.; Barba, Evan W.; Bettinger, Keith; Frazier, Abby G.; Colburn IX, John F.; Hanasaki, Naota; Hawkins, Ed; Hirabayashi, Yukiko; Knorr, Wolfgang; Little, Christopher M.; Emanuel, Kerry Andrew; Sheffield, Justin; Patz, Jonathan A.; Hunter, Cynthia L.; ... Show more Show less
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Abstract
The ongoing emission of greenhouse gases (GHGs) is triggering changes in many climate hazards that can impact humanity. We found traceable evidence for 467 pathways by which human health, water, food, economy, infrastructure and security have been recently impacted by climate hazards such as warming, heatwaves, precipitation, drought, floods, fires, storms, sea-level rise and changes in natural land cover and ocean chemistry. By 2100, the world’s population will be exposed concurrently to the equivalent of the largest magnitude in one of these hazards if emmisions are aggressively reduced, or three if they are not, with some tropical coastal areas facing up to six simultaneous hazards. These findings highlight the fact that GHG emissions pose a broad threat to humanity by intensifying multiple hazards to which humanity is vulnerable.
Date issued
2018-11
URI
https://hdl.handle.net/1721.1/126779
Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences; Lorenz Center (Massachusetts Institute of Technology)
Journal
Nature Climate Change
Publisher
Springer Science and Business Media LLC
Citation
Mora, Camilo et al. "Broad threat to humanity from cumulative climate hazards intensified by greenhouse gas emissions." Nature Climate Change 8, 12 (November 2018): 1062–1071 © 2018 Springer Nature Limited
Version: Author's final manuscript
ISSN
1758-678X
1758-6798

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