Climate change

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1 Runninghead: WORLD ON FIRE World on Fire: How Climate Change affects Earth and Humanity Carter Baumgartner The University of Texas at San Antonio

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Transcript of Climate change

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World on Fire: How Climate Change affects Earth and HumanityCarter Baumgartner

The University of Texas at San Antonio

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Abstract

The change in the Earth’s climate has made an obvious and extreme shift in recent years. How does

climate change work and who is the one doing the damage? Gasses stop heat from leaving the planet

and traps humanity in a cage for their own destruction. Companies with inefficient ‘green’ laws and

countries with little to no stoppings for saving the earth are poisoning the atmosphere and killing life

around the world on land and at sea.

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In recent decades there has been a major uptick in extreme weather occurrences and deaths due

to change in climate. The waste that humans create by living the new post industrial revolution

lifestyle has caused this by trapping heat in the atmosphere and oceans. The excessive use of wasteful

technologies is ruining the planet because climate change is destroying species and lives. It can be

agreed that no one wants to kill the only world we have and by showing how climate change has

already affected the world, the descent into an even worse situation can be prevented.

Early on in the understanding of climate change it was called global warming due to the lack of

understanding of what worldwide warming would do. To reduce confusion many scientists have

changed the term used to climate change as it encompasses the effects of cooling and such as well.

Scientists needed to clarify because an increase in temperature doesn't always mean something as

simple as an average temperature increase. For instance the melting of ice causes an influx of fresh

water into a very balanced system of currents in the ocean, this could stop or slow the North Atlantic

Current which keeps Western Europe and North East USA warm and then plunge those areas into a

false ice age. Like in the movie Day after Tomorrow, although to be honest not even the harshest of

predicted outcomes are close to the severity shown in that movie.

The usual suspect for climate change is greenhouse gasses, a term for gasses like carbon dioxide

or methane that block sunlight reflected from the planet from getting out which causes a greenhouse

effect and heating up the planet (hence the name). A small scale of this would be how a car heats up

when it's in the sun. The windows allow the sunlight in but not the reflected heat from the upholstery

out thus heating up the car. The causes of these gasses vary from power plants to agriculture with

residential and commercial actually being the some of the lowest contributors of emissions as seen in

Figure 1. Supplying energy creates the most pollution, as most ways companies do so is by burning

coal or natural gas which releases literal tons of carbon dioxide into the air, almost 2100 million metric

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tons in 2013 by USA alone.

All this dumping of greenhouses gasses into the atmosphere caused Europe’s hottest summer in

500 years, this resulted in between 22,000 and 45,000 heat related deaths over 2 weeks in 2003. This

was due to an only 3.5 degree Celsius increase in temperature on average (Patz 2005). While the

general heat increase worldwide is attributed to worldwide effects of climate change it is thought that

this incident and others like it were because of a much more conspicuous culprit, the cities themselves.

The cities do this by their capacity to act as so called 'heat islands', that is they store heat and decrease

cooling because of reduced vegetation and increased coverage by dark surfaces such as asphalt and

rooftops. Most cities in recent times have shown average temperatures increasing by 5-11 °C from

their surrounding country side (Patz 2005).

All of this stored heat has been shown to cause increased deaths and disease onset due to

changes in the average temperature that the people in the area are used to. Because the heat locked in

the cities is harder to get out due to the buildings blocking winds and evaporation as well as the

concrete being better at absorbing and staying hot for extended periods the summers stay hot for longer

and the winters never get quite as cold as they used to. The heat from the cities are increasing but the

native's desired temperature isn't increasing with it fast enough. For example while 17 °C in London

(Patz 2005) may be an unusually hot day, in Austin however it is considered average and maybe even

quite cool depending on the season.

From cities to hurricanes the climate is large scale and so it is good to expand one’s focus on

larger affects. Only days ago (8/23/15) the strongest hurricane to ever hit North America made landfall

near Manzanillo, Mexico. While the death toll and cost of destruction was relatively low for such a

storm (a similar storm in the Philippines killed over 6,300 people) that is merely due to luck about

where it hit (mostly unpopulated areas) and that because it developed so fast it couldn't create a storm

surge that would of flooded the area as well as Mexico's diligent response to the disaster as it developed

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(Plumer 2015).

A likely explanation for why the hurricane got so strong would be the natural periodic

occurrence called El Nino, and this one is one of the strongest (meaning warmest) on record, the waters

under the hurricane being particularly warm. This is because of all the energy being absorbed by the

oceans, so much excess heat in the air due to its trapping by greenhouse gasses is being pumped right

into the oceans. Shown to be more than 90% of that energy (Holthaus 2015). Also due to increased

temperatures the rates of evaporation have increased leading to more rainfall and higher humidity.

Because dry air is often a slowing force for hurricane growth they now have the capability to grow

more and faster without the usual dry patches (Holthaus 2015).

As the world changes the species on it change to match, this means that as an area gets hotter

many species will move toward the poles or up in elevation to keep their usual temperatures constant.

One of the easiest ways to track how some animals are reacting to climate change is to see how they

migrate now relative to before. Changes in the timing of spring activities, when they breed or appear in

a region, indicate that the animals are indeed feeling the effects of the climate. Birds and butterflies are

starting to breed and appear at their migratory destination earlier while plants are unfolding leaves and

flowering days or weeks before their average times just a few decades ago (Walther 2002).

Tracking species that don't migrate is easier than those that do because seeing the range changes

in a usually non-changing species means that when they do move it is more obvious. Table 1 shows a

few examples and how the animals moved because of certain climate changes in their region (Walther

2002). But what are some examples of people arguing against climate change?

Those unversed in the science behind climate or mislead by those who believe that there is none

often say the darndest things. The most paranoid say this talk of climate change was made up to

“eventually destroy the industrial structure of the world's leading superpowers, and drastically reduce

individual freedom of all citizens in complying with strict environmental laws” (Elliot 2013).

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Apparently there hasn’t been any general warming since 1997 (or 1998 depending on who is asked)

and over 31,000 scientists signed a petition saying humans are not causing global warming. Hawkins

continues to list that arctic ice is up 50% since 2012 and that earlier predictions have continually come

up short (2014).

The problem in saying there is no more warming is that they show these graphs that seem to not

show any sort of change and proclaim that there has been no warming since 1998 (a strangely hot year

to start from). Much of this stems from the scale of numbers talked about here, from 1950 -1999 the

earth was warming 0.113 °C per decade, doesn’t seem like much. But the climate is much more fragile

than it’s ever changing temperature would have you believe, and very few disagree with the fact that

this fraction of a degree a decade does indeed count as warming. So if 0.113 °C is enough for even the

deniers of a general trend to say it was warming why then does a warming of 0.116 °C between 2000

and 2014 not count anymore (Plait 2015)? Scientists against climate change show their graphs and

tables showing only a few tenths of a degree rise worldwide and cry ‘that is no increase!’ But when

shown the same increase before 1998 they say ‘yes, it got warmer, but only for a little while.’

Speaking of disagreeing scientists, the 31,000 who signed some petition decrying global

warming seems like a big number, but again the deniers again use scale to their advantage. Thirty one

thousand may seem like a lot in terms of a school but only that many scientists agreeing on anything

usually indicates it’s bunk. And one has to consider what people (yes scientists are people too) would

do for money. For as long as smoking has been around there have been doctors to endorse it, for a

while they could claim ignorance but even now there are those with degrees who will claim under oath

that smoking has no ill effects and then turn around to take money from tobacco companies. So

although some of them undoubtedly believe that there is in fact no global warming the numbers are

skewed by both how many are just taking bribes and that this ‘big number’ really isn’t so big.

Maybe some of them were confused into the believing there is no climate change by people like

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Hawkins just straight up lying in his essay. It’s amazing how often people will straight up lie to try to

convince someone of something. That is precisely what Hawkins is doing when he claims that many

earlier predictions have been off the mark. Again one has to look at the scale of his claim, he cites

another paper by a Dr. Roy Spencer that says 95% of the 90 models he analyzed were faulty. Those

who want to get to the bottom of this will have to search very hard to get to the bottom of this but they

fill find that the graph Spencer uses is basically made up. By going to the actual data that he used to

base the accuracy on (the HadCRUT4 satellite) one can see that the numbers he is using as the baseline

of change is completely wrong. In fact by plugging in the numbers he should have used, about 90% of

his 90 models are actually too low in their predictions. Not only does this prove many of the models

right but in doing so shows a general upward trend of a much higher caliber than believed by scientists

already on board that the climate is changing.

That these models tend to be under, not over, in their general heat predictions provides some

context as to the rest of the arguments brought up by Hawkins. He often brings up a stat meant to show

how things haven’t changed at all or how they may be even improving over earlier years, take for

example the earlier said opposition that ice grew by 50% from October 2012 to 2013 the same month.

With this claim he shows his ignorance on how the Earth actually works (although part of knowing

how it works is knowing that no one really knows all that well). His article was written in 2014, so it

could be argued that he didn’t have any more information of the larger trend later in the decade and so

only talked of the change from one year to another. But the earth doesn’t care for mere years, as it has

drifted through space for billions of those relatively trivial things. This is why all talk of climate

change (itself a worldwide and long term phenomenon) must be long term. Individual years can have

all the discrepancy it wants if the general trend is changing then a single fluke of a year doesn’t affect

the overall conclusion.

And let it be known that this year isn’t a fluke in that it was cold, this year had such a difference

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from the years close to it because it was especially warm and so melted more ice than expected.

Hawkins cites many pages for his claims which in turn cite more, but again as before if one goes to the

source (a satellite again, used by the National Snow and Ice Data Center) it is shown in an easy to

understand graphic how the extent of ice coverage changes from year to year. Because it is now 2015 it

shows the years from 2011-2015. If those who cited this satellite page had actually looked at its long

term readings (which most of them couldn’t do as they jumped the gun and posted ‘look I’m right’ way

before it could be determined either way) they would have seen that 2012 was a particularly low ice

year and since 2013 the ice has receded slowly to begin to match that recorded then. With an

abundance of information it is easy to be overwhelmed and to just trust those who say what you already

believe. But if you want the truth you have to dig deeper and find the real statistics behind everyone’s

claims.

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References

Elliot T (2012). Put simply, GW/CC doesn’t exist. UFO Digest. From http://ufodigest.com/article/put-

simply-global-warmingclimate-change-doesnt-exist

Hawkins J (2014). 5 scientific reasons global warming isn’t happening. Town Hall. From

http://townhall.com/columnists/johnhawkins/2014/02/18/5-scientific-reasons-that-global-

warming-isnt-happening-n1796423/page/full

Holthas, E (2015). It’s Undeniable: climate change made hurricane Patricia worse. Slate. From

http://www.slate.com/blogs/the_slatest/2015/10/23/hurricane_patricia_was_made_worse_by_cli

mate_change.html

Patz, J A, Campbell-Lendrum D., Holloway T, Foley J (2005). Impact of Regional Climate Change on

Human Health. Nature. From

http://www.nature.com.libweb.lib.utsa.edu/nature/journal/v438/n7066/full/nature04188.html

Plait P (2015). Yeah, about that global warming hiatus… Slate. From

http://www.slate.com/blogs/bad_astronomy/2015/06/05/global_warming_hiatus_new_research_

shows_it_doesn_t_exist.html

Plass, G (2008). Carbon Dioxide and Climate. Scientific American. From

http://www.scientificamerican.com/article/carbon-dioxide-and-climate/

Plumer B (2015). Hurricane Patricia: why a record storm did surprisingly little damage. Vox Energy

and Enviornment. From http://www.vox.com/2015/10/26/9615274/hurricane-patricia-aftermath

Sources of Greenhouse Gas Emissions (2013). EPA. From

http://www3.epa.gov/climatechange/ghgemissions/sources.html

Walther, G et al (2002). Ecological Responses to Recent Climate Change. Nature. From

http://www.nature.com.libweb.lib.utsa.edu/nature/journal/v416/n6879/full/416389a.html

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Table 1.

Note: Walther, G et al (2002). Ecological Responses to Recent Climate Change. Nature. From http://www.nature.com.libweb.lib.utsa.edu/nature/journal/v416/n6879/fig_tab/416389a_T2.html

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Figure 1.

Note: Sources of Greenhouse Gas Emissions (2013). EPA. From

http://www3.epa.gov/climatechange/ghgemissions/sources.html