Another modeling claim: Heat-related deaths likely to increase significantly as global temperatures rise

From Springer and the “people are too poor to pay for electricity to keep cool” department, comes yet another ode to the Paris Agreement. Apparently, Vietnam will be hardest hit.

Heat-related deaths likely to increase significantly as global temperatures rise, warn researchers

Models show that the implementation of the Paris Agreement is critical to avoid a large increase in temperature-related deaths

The world needs to keep global temperatures in check by meeting the goals set out in the Paris Agreement, or more people could die because of extreme temperatures, say authors of a new study in the letters section of Springer’s journal Climatic Change.

The Paris Agreement, adopted in 2015 under the auspices of the United Nations Framework Convention on Climate Change (UNFCCC), binds nations to hold warming well below 2 degrees Celsius (°C) in global mean temperature, relative to pre-industrial levels. It also urges countries to make additional efforts to limit warming to 1.5°C.

Led by researchers at the London School of Hygiene & Tropical Medicine (LSHTM), this is the first study that evaluates global temperature-related health impacts under scenarios consistent with the Agreement. The researchers assessed the mortality impacts projected for a range of temperature increases, either compatible with the thresholds set in Paris (1.5°C and 2°C) or higher (3°C and 4°C). These projections took into account how an increase in heat-related deaths might be offset against a decrease in deaths due to cold, as global temperatures rise.

The scope of the study allowed global comparisons across various areas of the world. The team at LSHTM first analyzed historical data on temperature-related deaths from 451 locations in 23 countries with different socio-economic and climatic conditions. They then projected changes in mortality under climate scenarios consistent with the various increases in global temperature, while keeping demographic distributions and temperature-health risks constant.

The results indicated dramatic increases of heat-related deaths under extreme warming (3°C and 4°C) compared to the mildest threshold (1.5°C), with additional excess mortality ranging from +0.73 per cent to +8.86 per cent across all regions. The net difference remained positive and high in most of the areas, even when potential decreases in cold-related deaths were considered.

The picture was more complex when comparing 2°C versus 1.5°C warming. A net increase in deaths was still projected for warmer regions such as South America, South Europe, and South-East Asia (with changes ranging from +0.19 per cent to +0.72 per cent), while in cooler regions the excess mortality was predicted to stay stable or drop slightly.

The results support the assessment of an upcoming Special Report of the Intergovernmental Panel on Climate Change, scheduled for approval in October, that evaluates the health risks associated with 1.5°C and 2°C of warming.

“Our projections suggest that large increases in temperature-related deaths could be limited in most regions if warming was kept below 2°C,” explains Ana Maria Vicedo-Cabrera, the first author of the study. “Under extreme changes in climate, large parts of the world could experience a dramatic increase in excess mortality due to heat. This would not be balanced by decreases in cold-related deaths. Efforts to limit the increase in global temperature to below 1.5°C could provide additional benefits in tropical or arid regions, including the most populous and often poorest countries.”

Antonio Gasparrini, co-author of the study, says: “We hope that the results will help convince nations to take decisive actions by implementing ambitious climate policies consistent with the Paris Agreement in an effort to save lives. Currently, we are on a trajectory to reach over 3°C of warming, and if this trend continues there would be serious consequences for health in many parts of the world.”

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The paper:: Vicedo-Cabrera, A. M. et al (2018). Temperature-mortality impacts under and beyond Paris Agreement climate change scenarios, Climatic Change Letters DOI: 10.1007/s10584-018-2274-3

https://link.springer.com/article/10.1007%2Fs10584-018-2274-3

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September 13, 2018 11:47 am

This is just another waste of resources on another “What if ?” study that concludes if a region warms by x degrees, heat-related deaths will increase by y percent. This kind of “research” is worthless on so many levels. Whether the planet will be warmer or colder long-term cannot be forecast with any reasonable certainty. The first derivative of the global mean temperature trend line has been positive for the past 20 years but has decreased in value each month for the past 20 years. The derivative is likely to become negative in the mid-2020s and increase in negative slope well into the 2030s, i.e., the mean global surface temperature will decline. And how can mere mortals be so audacious to assert that the world community can unite sufficiently to tweak the minuscule content of CO2 in the atmosphere? And even if the CO2 content can be tweaked, will a tweak have any effect on the temperature of the planet? Science fictions gets no crazier than this.

Glen Martin
September 13, 2018 1:36 pm

Any increase in heat related deaths is due to the obvious increase in obesity.

Bill Marsh
Editor
September 13, 2018 1:50 pm

Probably will be more than off set by the decrease in ‘cold’ deaths.

Davis
September 13, 2018 4:58 pm

“people are too poor to pay for electricity to keep cool”

So, let’s give them access to cheap electricity and air conditioning.

Such an old fashioned solution that the people in charge are too dumb to let the people who need it have it.

D Cage
September 18, 2018 10:56 pm

The huge levies on energy in the UK have resulted in about a 20% increase in the cold related deaths. I assume this is factored in when they talk about the death rate increase. Renewable energy fails to deliver any significant output here when we need it most in the cold foggy still winters and they are trying to force smart meters on us to have half hour slots for immense price hikes to cut demand. I assume it is so we choose to die from hypothermia rather than have them admit the murdered the victims with their Eco laws.