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Article: The half-degree matters for heat-related health impacts under the 1.5 °C and 2 °C warming scenarios: Evidence from ambulance data in Shenzhen, China

TitleThe half-degree matters for heat-related health impacts under the 1.5 °C and 2 °C warming scenarios: Evidence from ambulance data in Shenzhen, China
Authors
Issue Date2021
Citation
Advances in Climate Change Research, 2021, v. 12 n. 5, p. 628-637 How to Cite?
AbstractThe Paris Agreement has prompted much interest in the societal and health impacts of limiting global warming to 1.5 °C and 2 °C. Previous assessments of differential impacts of two targets indicate that 1.5 °C warming target would substantially reduce the impact on human health compared to 2 °C, but they mainly focused on the magnitude of temperature changes under future climate change scenarios without any consideration of greater frequency of cumulative heat exposures within a day. Here we quantified the health risks of compound daytime and nighttime hot extremes using morbidity data in a megacity of China, and also identified the time-period of heat exposure with higher risks. Then we projected future morbidity burden attributable to compound hot extremes due to the half-degree warming. We estimated that the 2 °C warming scenario by 2100 as opposed to 1.5 °C would increase annual heat-related ambulance dispatches by 31% in Shenzhen city. Substantial additional impacts were associated with occurrence of consecutive hot days and nights, with ambulance dispatches increased by 82%. Our results suggested that compound hot extremes should be considered in assessment of heat-related health impacts, particularly in the context of climate change. Minimizing the warming of climate in a more ambitious target can significantly reduce the health damage.
Persistent Identifierhttp://hdl.handle.net/10722/310506
ISSN
2023 Impact Factor: 6.4
2023 SCImago Journal Rankings: 1.551
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHe, Y-
dc.contributor.authorDeng, S-
dc.contributor.authorHo, HC-
dc.contributor.authorWang, H-
dc.contributor.authorChen, Y-
dc.contributor.authorHajat, S-
dc.contributor.authorRen, C-
dc.contributor.authorZhou, B-
dc.contributor.authorCheng, J-
dc.contributor.authorHu, W-
dc.contributor.authorMa, W-
dc.contributor.authorHuang, C-
dc.date.accessioned2022-02-07T07:57:39Z-
dc.date.available2022-02-07T07:57:39Z-
dc.date.issued2021-
dc.identifier.citationAdvances in Climate Change Research, 2021, v. 12 n. 5, p. 628-637-
dc.identifier.issn1674-9278-
dc.identifier.urihttp://hdl.handle.net/10722/310506-
dc.description.abstractThe Paris Agreement has prompted much interest in the societal and health impacts of limiting global warming to 1.5 °C and 2 °C. Previous assessments of differential impacts of two targets indicate that 1.5 °C warming target would substantially reduce the impact on human health compared to 2 °C, but they mainly focused on the magnitude of temperature changes under future climate change scenarios without any consideration of greater frequency of cumulative heat exposures within a day. Here we quantified the health risks of compound daytime and nighttime hot extremes using morbidity data in a megacity of China, and also identified the time-period of heat exposure with higher risks. Then we projected future morbidity burden attributable to compound hot extremes due to the half-degree warming. We estimated that the 2 °C warming scenario by 2100 as opposed to 1.5 °C would increase annual heat-related ambulance dispatches by 31% in Shenzhen city. Substantial additional impacts were associated with occurrence of consecutive hot days and nights, with ambulance dispatches increased by 82%. Our results suggested that compound hot extremes should be considered in assessment of heat-related health impacts, particularly in the context of climate change. Minimizing the warming of climate in a more ambitious target can significantly reduce the health damage.-
dc.languageeng-
dc.relation.ispartofAdvances in Climate Change Research-
dc.titleThe half-degree matters for heat-related health impacts under the 1.5 °C and 2 °C warming scenarios: Evidence from ambulance data in Shenzhen, China-
dc.typeArticle-
dc.identifier.emailRen, C: renchao@hku.hk-
dc.identifier.authorityHo, HC=rp02482-
dc.identifier.authorityRen, C=rp02447-
dc.identifier.doi10.1016/j.accre.2021.09.001-
dc.identifier.scopuseid_2-s2.0-85115761868-
dc.identifier.hkuros331597-
dc.identifier.volume12-
dc.identifier.issue5-
dc.identifier.spage628-
dc.identifier.epage637-
dc.identifier.isiWOS:000704501200003-

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