Amazing Drop
in Deaths from Extreme Weather
By M. Perry
The Reason
Foundation has released a new study titled, "Wealth and Safety: The Amazing Decline in Deaths
from Extreme Weather in an Era of Global Warming, 1900–2010," here's
the executive summary (emphasis mine):
"Proponents
of drastic curbs on greenhouse gas emissions claim that such emissions cause
global warming and that this exacerbates the frequency and intensity of extreme
weather events, including extreme heat, droughts, floods and storms such as
hurricanes and cyclones. But what matters is not the incidence of extreme
weather events per se but the impact of such events—especially the human
impact. To that end, it is instructive to examine trends in global mortality
(i.e. the number of people killed) and mortality rates (i.e. the proportion of
people killed) associated with extreme weather events for the 111-year period
from 1900 to 2010.
Aggregate
mortality attributed to all extreme weather events globally has declined by
more than 90% since the 1920s, in spite of a four-fold rise in population and
much more complete reporting of such events. The aggregate mortality
rate (per million population) declined by 98% (see chart above), largely
due to decreased mortality in three main areas:
- ·Deaths and death rates from droughts,
which were responsible for approximately 60% of cumulative deaths due to
extreme weather events from 1900–2010, are more than 99.9% lower than in
the 1920s.
- Deaths and death rates for floods,
responsible for over 30% of cumulative extreme weather deaths, have
declined by over 98% since the 1930s.
- ·Deaths and death rates for storms (i.e.
hurricanes, cyclones, tornados, typhoons), responsible for around 7% of
extreme weather deaths from 1900–2008, declined by more than 55% since the
1970s.
To put the
public health impact of extreme weather events into context, cumulatively they
now contribute only 0.07% to global mortality. Mortality from extreme weather
events has declined even as all-cause mortality has increased, indicating that
humanity is coping better with extreme weather events than it is with far more
important health and safety problems.
The decreases
in the numbers of deaths and death rates reflect a remarkable improvement in
society’s adaptive capacity, likely due to greater wealth and better
technology, enabled in part by use of hydrocarbon fuels. Imposing
additional restrictions on the use of hydrocarbon fuels may slow the rate of
improvement of this adaptive capacity and thereby worsen any negative impact of
climate change. At the very least, the potential for such an adverse outcome
should be weighed against any putative benefit arising from such
restrictions."
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