Climate change analysis predicts increased fatalities from heat waves
Global climate change is anticipated to bring more extreme weather phenomena such as heat waves that could impact human health in the coming decades. An analysis led by researchers at the Johns Hopkins Bloomberg School of Public Health calculated that the city of Chicago could experience between 166 and 2,217 excess deaths per year attributable to heat waves using three different climate change scenarios for the final decades of the 21st century. The study was published May 1 edition of the journal Environmental Health Perspectives.
"Our study looks to quantify the impact of increased heat waves on human mortality. For major a U.S. city like Chicago, the impact will likely be profound and potentially devastating," said Roger Peng, PhD, lead author of the study and associate professor in the Department of Biostatistics at the Bloomberg School of Public Health. "We would expect the impact to be less severe with mitigation efforts including lowering CO2 emissions."
For the analysis, Peng and his colleagues developed three climate change scenarios for 2081 to 2100. The scenarios were based on estimates from seven global climate change models and from mortality and air pollution data for the city of Chicago from 1987 to 2005. The data were limited to the warm season from May to October of each year.
From 1987 to 2005, Chicago experienced 14 heat waves lasting an average of 9.2 days, which resulted in an estimated 53 excess deaths per year. In the future, the researchers calculated that excess mortality attributable to heat waves to range from 166 to 2,217 per year. According to the researchers, the projections of excess deaths could not be explained by projected increases in city population alone. The exact change due to global warming in annual mortality projections, however, is sensitive to the choice of climate model used in analysis.
"It's very difficult to make predictions, but given what we know nowabsent any form of adaptation or mitigationour study shows that climate change will exacerbate the health impact of heat waves across a range of plausible future scenarios," added Peng.
More information: "Towards a Quantitative Estimate of Future Heat Wave Mortality Under Global Climate Change" Environmental Health Perspectives.
Provided by
Johns Hopkins University
-
From lemons to lemonade: Reaction uses carbon dioxide to make carbon-based semiconductor,
32 comments
-
Thioridazine kills cancer stem cells in human while avoiding toxic side-effects of conventional cancer treatments,
3 comments
-
SpaceX private rocket blasts off for space station (Update),
42 comments
-
Climate scientists say they have solved riddle of rising sea,
31 comments
-
SpaceX capsule has 'new car' smell, astronauts say (Update),
2 comments
-
Hypothetical desert earth
9 hours ago
-
More human population = greater mass?
May 25, 2012
-
Conversion from aircraft bearing to normal degrees
May 23, 2012
-
Interpretation/Analysis of the Lab results(HEPA filter)
May 22, 2012
-
Has anyone here attended the The Urbino Summer School in Paleoclimatology?
May 22, 2012
-
Earthquakes: Mag 6 N. Italy and Mag 5.6 W. Bulgaria
May 21, 2012
- More from Physics Forums - Earth
More news stories
SpaceX capsule has 'new car' smell, astronauts say (Update)
SpaceX's Dragon cargo vessel smells like a new car, said astronauts at the International Space Station after opening the hatches Saturday following the spacecraft's landmark mission to the orbiting lab.
Space & Earth / Space Exploration
23 hours ago |
4.5 / 5 (21) |
2
Australia hails surprise super-telescope decision
Australia has hailed a surprise decision giving it a role in a radio telescope project aimed at revolutionising astronomy, vowing to draw on its decades of experience in space science.
23 hours ago |
5 / 5 (4) |
2
Astronomers seize last chance in lifetime for Venus Transit
Astronomers are gearing for one the rarest events in the Solar System: an alignment of Earth, Venus and the Sun that will not be seen for another 105 years.
23 hours ago |
5 / 5 (3) |
2
Astronauts enter world's 1st private supply ship
(AP) -- Space station astronauts floated into the Dragon on Saturday, a day after its heralded arrival as the world's first commercial supply ship.
Space & Earth / Space Exploration
23 hours ago |
5 / 5 (6) |
0
Sophisticated simulations predict future warming
The chances of our planet being hit by a global warming of 3 degrees Celsius by 2050 is as likely as it being hit by an increase of 1.4 degrees, new research shows. Presented in the journal Nature Geoscience, the British study ...
Space & Earth / Earth Sciences
May 22, 2012 |
4.4 / 5 (9) |
51
Nvidia trumpets Tegra 3 phone design wins for 2012
(Phys.org) -- Nvidias competitive war paint has a name, Tegra 3. On the heels of Nvidia announcements about lowering costs of its Tegra 3 processors and Nvidia-enabled tablets running Android Ice Cream ...
Browser wars flare in mobile space
The browser wars are heating up again, but this time the fight is for dominance of the mobile Internet.
Scientist: Evolution debate will soon be history
(AP) -- Richard Leakey predicts skepticism over evolution will soon be history. Not that the avowed atheist has any doubts himself.
Dell tablet leak: 10.1-inch display, two-battery choice
(Phys.org) -- Headline after headline talks about vendors tablets in the wings as likely number-one contenders for the iPad. Such claims have justifiably been taken with a grain of salt, considering ...
SpotterRF debuts Radar Backpack Kit (w/ Video)
(Phys.org) -- SpotterRF has announced a special radar backpack kit designed to enhance situational awareness for soldiers on the ground. The company says its special radar is designed for warfighters as part ...
Thousands of shellfish found dead in Peru
Thousands of crustaceans were found dead off the coast of Lima following the mystery mass death of dolphins and pelicans, the Peruvian Navy said Friday.
May 03, 2011
Rank: 2.6 / 5 (7)
May 03, 2011
Rank: 1.1 / 5 (7)
May 03, 2011
Rank: 3.7 / 5 (6)
http://ehp03.nieh....1002430
They don't come out and say it but the type of estimation they used for the predictions is one that's usually used when the data doesn't show any strong correllation between cause and effect and you are trying to force a fit to some normal distribution. That's cheating unless you know that the data is going to fit a normal distribution, and in this case they don't. It's not correct to assume a linear log fit when the historical data does not show such a fit.
The non-fit is because deaths from heat waves depend strongly on factors other than the intensity of the heat wave, such as population/demographic statistics and economics.
May 03, 2011
Rank: 2.7 / 5 (7)
Those self-same models that have not improved their margin of error for a long time.
So again we DO NOT have science here.
May 03, 2011
Rank: 3.3 / 5 (7)
May 03, 2011
Rank: 2.3 / 5 (9)
No problem.
Just change the name of your model predictions again.
"Global warming" became "global climate change."
Now rename your predictions, "global climate instabilities" and ask for a big increase in government funding for your creativity!
What a sad day for science.
With kind regards,
Oliver K. Manuel
May 03, 2011
Rank: 2.6 / 5 (5)
May 03, 2011
Rank: 2.5 / 5 (6)
The following is from the Union of Concerned Scientists (they strongly support the theory of AGW, so don't accuse me of cherry-picking or quoting fox news here):
that is paragraph four, second sentence, at the following location:
http://www.ucsusa...l-6.html
May 03, 2011
Rank: 3.4 / 5 (5)
May 03, 2011
Rank: 4.3 / 5 (6)
http://www.ipcc.c...on.shtml
May 04, 2011
Rank: 1.8 / 5 (5)
May 04, 2011
Rank: 2 / 5 (4)
May 04, 2011
Rank: 1 / 5 (2)
Smart/Good one.
May 04, 2011
Rank: 5 / 5 (1)
Not really. What if the weather is more extreme at both ends?
Heatwaves don't necessarily mean there won't be unusually cold winters any longer. Current systems theory actually suggests quite the opposite. If you add energy into an oscillating system, the system will oscillate to the extremes more often. That would be hotter summers and colder winters in regards to climate.
May 04, 2011
Rank: 3 / 5 (2)
May 04, 2011
Rank: 3 / 5 (2)
Hell, even a high pollen count one year could kill off thousands. I agree, the study above is faulty, and to have someone speak of how warmer climate will be beneficial, without even a basic understanding of systemic variables is rather irritating.
May 04, 2011
Rank: 3.7 / 5 (3)
I agree 100%. It's one of the many silly things you hear from the far right extremists these days.
Yeah, but there's too many times where the temperature is almost exactly the same but deaths are different, as well as times when deaths are the same but temperatures are different. The signal to noise ratio in the data is too high to allow the above assumption of a linear log relationship with a semi-gaussian fit. The data just doesn't indicate that. The funny thing is that the only reason I noticed the flaw is because they used the term quasi-liklihood and I had to start digging to figure out what they were talking about. That led me to look up some of the other terms they used. Then I said to myself "that doesn't make sense".
May 04, 2011
Rank: 1 / 5 (1)
This goes in the face of the whole, "ignore an expert" vein of reasoning that has overtaken this site. There's a reason why we defer to experts, lots of data, and we don't have to time to know it all.
May 04, 2011
Rank: 2.3 / 5 (3)
May 04, 2011
Rank: 5 / 5 (1)
Well back then you had massive amounts of natural barriers that would soak up the runoff. Now, with land use change and the lack of forested river area runoff has become a much greater problem.
May 04, 2011
Rank: 1 / 5 (1)
I know, that's an oversimplified/overgeneralized comment, but it's true in a broad sense.
May 04, 2011
Rank: not rated yet
If you reduce EPA funding they're not going to drop law enforcement, they're going to drop research first.
May 04, 2011
Rank: 1 / 5 (1)
May 04, 2011
Rank: 5 / 5 (1)
May 04, 2011
Rank: 5 / 5 (3)
May 05, 2011
Rank: 1 / 5 (2)
Google it. Courts order environmental impact studies all the time in response to law suits from groups like Siera Club. I guess in that case it's the defendant who pays for it? For example, they are trying to station a group of the new joint strike fighters here in SC. A court ordered an environmental impact study in regard to noise and air pollution. I assume that study comes out of the Airforce's budget? That's a lot of what the EPA does these days, and a budget cut shouldn't change that. The EPA certainly wasts enough money on funding special interest groups and doing huge advertising campaigns that maybe a little budget cut is needed.
I don't think you can name a federal agency where there aren't some big cost saving opportunities.
May 07, 2011
Rank: 2.3 / 5 (3)
This past week's records for the U.S.
High Temperatures: 122
Low Temperatures: 651
Lowest Max Temperatures: 581
Highest Min Temperatures: 104
Note that many of the cold breaks were 4 to 7 degree breaks, while most of the "hot" breaks are actually ties or 1 to 2 degree breaks.
Note that if there was a greenhouse effect ocurring, you should never, ever see a large number of record low minimums, and certainly never see a larger number of record low minimums than record high minimums.
Even a mild greenhouse effect should cause it to be virtually impossible for record lows to be broken, and should cause record high minimums to be disproportionately widespread and disproportionately often, particularly in comparison with record lows. We simply do not see that.
In fact, we continue to see just the opposite. There are 5 to 6.5 times as many cold records, including record lows, as compared to hot records, including high minimums...
May 07, 2011
Rank: 1 / 5 (2)
I don't usually comment here on climate change, not my speciality, but I have to say (personal observation only), that over the last 20 years or so, frogs are spawning earlier, this year it was late Feburary. Just after the thaw from the coldest winter we've had for a long time.
Local weather is not global climate...
May 08, 2011
Rank: 1 / 5 (1)
An entire continent (plus Hawaii) is not "Local weather".
In fact, the only place where the hot records are being broken consistently are in the drought stricken regions in Texas and Florida this is due to abnormally arid environment of drought. Other than that, the hot records are mostly some spread out "one-ofs" on the leading side of fronts.
Everywhere else in the country is experiencing cold records.
I suspect that if we could get one good rain event in west Texas, one good rain in south Texas, and one good rain in Florida, it would even set up abnormally cold patterns there as well.
May 08, 2011
Rank: 1 / 5 (1)
The majority of any warming that is taking place is local, and caused by man-made structures which alter Albedo (roads, bridges, interior of automobiles, concrete buildings, etc,) which has nothing to do with greenhouse effect.
The Earth self-regulates. Even if it does try to get warmer, that will produce more clouds. More clouds will increase the Earth's Albedo VASTLY (clouds in the temperate or tropical zone will reflect more total light than ice in the arctic). Then, because the clouds will be reflecting so much light, the temperature will cool. This will oscillate until an equilibrium is obtained.
Global temperatures are not significantly influenced by CO2, because CO2 is a trace element, and even if we burned all oil, natural gas, and everything else, CO2 levels would not get high enough to matter.
May 08, 2011
Rank: 1 / 5 (1)
Venus is in isothermal equilibrium, which means the temperature is the same everywhere, and heat escapes the planet at exactly the same speed it receives it from the Sun. The temperature is 735 Kelvin, and it has, by mass, approximately 2300 times more CO2 than the earth has.
Yet if Venus were magically transported to Earth's location, it's temperature would "only" be 389.5 Kelvin. This would still be lethal obviously, BUT remember, Venus has 2300 times more atmospheric CO2 than Earth.
The Earth could never reach such an absurd temperature, because there is no process by which to get that much CO2 into the atmosphere, except to heat the Earth to that temperature first. And that could never happen except in a Solar Nova or a planetary scale collision.
Even if we burned stuff untill almost all the oxygen was consumed, the temperature STILL would not get hot enough to create a runaway greenhouse effect. Earth would correct itself.
May 08, 2011
Rank: 1 / 5 (1)
I forgot to swap some decimals in the math I was doing because I accidentally treated a fraction of a percent as a whole percent.
So the point is, nothing even remotely like that could EVER happen on the Earth (i.e. getting hot enough to permanently boil the oceans, etc).
Even if all the glaciers melt, the temperature will self regulate due to increased cloud formation, which will then oscillate between a slightly warmer state and a slightly cooler state. Essentially, the Inter-Tropical Convergence Zone would just get wider and more continuous, and that would cool the planet down via increased Albedo, i.e. prevent further warming, while the extra CO2 gets processed by the plants and algae. Then we'd be right back where we are now, or even back in the mid 1800's climate.
May 08, 2011
Rank: 5 / 5 (1)
That's just creepy.