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Heatwave Deaths by 2080 Likely to Rise Dramatically, Study Predicts

Heatwave Deaths by 2080 Likely to Rise Dramatically, Study Predicts
A woman uses a fan as she stands along a street in Tokyo on July 23, 2018, as Japan suffers from a heatwave. (Martin Bureau/AFP/Getty Images)

Wednesday, 01 August 2018 04:47 PM

Heatwave deaths by 2080 are likely to rise sharply in some regions of the world if policymakers fail to take mitigating steps in climate and health policies, according to the results of a new study.

Deaths caused by heatwaves could increase dramatically in tropical and subtropical regions, the study found, followed closely by Australia, Europe and the United States, according to Reuters.

Published Tuesday in the journal PLOS Medicine, the study's results suggest stricter mitigation policies should be applied to reduce greenhouse gas emissions, because lower greenhouse gas emissions are linked with fewer deaths due to heatwaves.

Antonio Gasparrini, an expert from the London School of Hygiene & Tropical Medicine who co-led the research, noted that several countries around the world are currently being hit by deadly heatwaves and said it was "highly likely" that heatwave frequency and severity would increase under a changing climate.

"(But) the good news is that if we mitigate greenhouse gas emissions...then the projected impact will be much reduced."

The researchers said they hoped their research, which used mathematical modeling, would help decision makers in planning strategies for climate change.

The model used different scenarios characterized by levels of greenhouse gas emissions, preparedness and adaption strategies, as well as population density to estimate the number of deaths related to heatwaves in 412 communities across 20 countries from 2031 to 2080.

The results found that compared with the period 1971 to 2020 and under the extreme scenario, the Philippines would suffer 12 times more excess deaths caused by heatwaves in 2031 to 2080.

Under the same scenario, Australia and the United States could face five times more excess deaths, with Britain potentially seeing four times more excess deaths from heatwaves in the same period.

These predictions improved, however, when scenarios were modeled with policies implemented to fulfill the Paris Agreement on Climate Change. Under the least extreme scenario, and compared with the period 1971 to 2020, the study predicted that Britain would see only around double the number of excess deaths caused by heatwaves in 2031 to 2080.

The researchers note that their work had some limitations, since it could model only relatively simple assumptions of how countries may or may not adapt climate policies.

The findings "should therefore be interpreted as potential impacts under hypothetical scenarios, and not as projections of (the) future," they said in a statement.

© 2018 Thomson/Reuters. All rights reserved.

   
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Heatwave deaths by 2080 are likely to rise sharply in some regions of the world if policymakers fail to take mitigating steps in climate and health policies, according to the results of a new study.
heatwave, deaths, 2080, rise, study
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2018-47-01
Wednesday, 01 August 2018 04:47 PM
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