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The past 30 years has seen more "hot" (orange), "very hot" (red) and "extremely hot" (brown) summers, compared to a base period defined in this study from 1951 to 1980  (Source: NASA/Goddard Space Flight Center Scientific Visualization Studio)
Hotter summers have become the norm from 1980 to present compared to 1951 to 1980 (the base period)

NASA researchers have claimed to find new evidence for everyone's favorite topic: global warming
 
James Hansen, study leader from NASA's Goddard Institute for Space Studies (GISS), as well as GISS researchers Makiko Sato and Reto Ruedy, have concluded that summer heat waves (mainly in the U.S. Midwest) have become the norm over the last 30 years compared to a base period 30 years before 1980 -- and it's because of global warming. 
 
Their study works like this: the team collected mean summer temperatures from 1951 to 1980. This was considered the base period for the study. They then looked at the surface temperature data from the last 30 years (1980 until now) to determine whether extreme heat events were increasing. 
 
From there, the team wanted to see how much heating and cooling occurred in both time periods. To do this, they used a bell curve, which is a common tool that places the middle ground at the top of the bell (for instance, if this were a grading curve, a "C" would be at the top while the next tier down on each side would be a "B" and a "D," and the bottom of the bell would be an "A" and an "F). In this case, the top of the bell would be mean temperature, the next tier down would be "cold" on one side and "hot" on the other, then "very cold" and "extremely cold" on one side moving down while "very hot" and "extremely hot" are moving down the bell on the other side. 
 
Researchers then applied mean temperatures from 1980 until present, and found that 1980s, 1990s and 2000s fell more to the hot side than cold. The curve widened and flattened as well, which means there was a broader range of variability. This is important because Hansen once predicted that global warming's connection to extreme events would become more apparent in the decades from 1980 to present, but natural variability can play a role too and actually mask the trend. It was important to distinguish the two. 
 
This wider curve created the new "extremely hot" category, which was barely there in the base period. However, hot has become considered normal in the last 30 years. To be more specific, 75 percent of land area on Earth had "hot" summers in the last decade alone, where only 33 percent had "hot" summers from 1951 to 1980 total. 
 
According to the researchers, an "extremely hot" summer is considered a mean summer temperature that is experienced by less than one percent of Earth's land area during the base period. But since 2006 alone, approximately 10 percent of land area across the Northern Hemisphere had a summer like this. 
 
"This summer, people are seeing extreme heat and agricultural impacts," said Hansen. "We're asserting that this is casually connected to global warming, and in this paper, we present the scientific evidence for that."
 
The study noted "extremely hot" summers in other areas besides just the U.S. Midwest, like Texas, Mexico and Oklahoma in 2011 and Eastern Europe, Western Asia and the Middle East in 2010.
 
This study was published in the journal Proceedings of the National Academy of Sciences

Source: Science Daily



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RE: Ideological nonsense
By homernoy on 8/7/2012 3:03:33 PM , Rating: 0
Sounds like you're the zealot. Man kind has pretty much fucked up everything else in nature (plant and animal extinctions, pollution, deforestation, seawater acidification), why is it so controversial to examine the possibility that we might be fucking up the worlds climate as well?

There is no way you can deny this: "U.S. Department of Energy estimates that humans are responsible each year for emitting nearly 6 billion metric tons of carbon dioxide"

I am not saying we have global warming, but I believe climate change at least partially caused by man is a very real possibility and should not be dismissed because of your religion or some other personal agenda.


RE: Ideological nonsense
By Reclaimer77 on 8/7/2012 3:10:41 PM , Rating: 1
quote:
Man kind has pretty much fucked up everything else in nature


Oh is that so? Brilliant analysis there Mr. Spock.

quote:
I am not saying we have global warming, but I believe climate change at least partially caused by man is a very real possibility and should not be dismissed because of your religion or some other personal agenda.


Okay lets explore that. Let's say we are partially adding to an already naturally occurring warming trend.

So. What.

The only religion I see here is the Church of AGW.


RE: Ideological nonsense
By homernoy on 8/7/2012 3:22:05 PM , Rating: 1
Well let me ask you this. Are you religious?


RE: Ideological nonsense
By Reclaimer77 on 8/7/2012 6:04:14 PM , Rating: 2
No I'm not, and I don't understand why people insist on bringing religion into this argument.

Listen here, and listen good. We are animals. Literally. We're animals with a highly developed brain, but still animals. Nobody snapped their fingers and brought us here. That is what I believe. We crawled from the evolutionary pit and we're here in all our glory, stop cowering, revel in it.

And we have the same needs as every other animal. Food, shelter, protection, procreation, etc etc. We are the dominant species on this planet. If cows were the dominant species, their collective methane farts would also effect the planet in some way.

People are NOT going to accept a lower standard of living because you tell them they are killing the planet. So give it up. It's not true anyway, but even if it was, you're wasting your time. The same drive that spurred us to dominate this planet also drives us, individually, to acquire things. Like money, a house, cars, etc etc.

And here's the thing, all you environmentalists are the same way. You don't want to make personal sacrifices, you just want some Government to do it all for you. To force it on everyone else.

So you can attack me, you can accuse me of being "religious" (whatever the fuck THAT has to do with anything), but I'm coming out and saying it. I don't give a fuck. I'm 35 and in the blink of an eye I'll be dead. In the blink of an eye, my children will be dead. All I want is to have the best life possible, sorry that's so offensive to some people, but there it is.

Now if you can prove that this is "killing" the planet because of a few degrees in temperature, and that mankind is the reason, great. Knock yourself out. Here's the thing though, if the fix for this effects me in any way, I'll fight you tooth and nail. Leave me and mine out of it.


RE: Ideological nonsense
By homernoy on 8/7/12, Rating: 0
RE: Ideological nonsense
By Reclaimer77 on 8/7/2012 6:24:55 PM , Rating: 1
quote:
I said things have been fucked up by people. That is a fact. I am not an environmentalist in any way. I only stated that people who blatantly dismiss things that are very possible because of personal reasons seems....short sighted.


Yeah but what's the point on dwelling about that? We can't go back and fix our mistakes. We just have to soldier on like the upright animals we are, doing the best we can with what we know at the time.

Nobody likes it when people throw mankind up in your face, like you're personally responsible for the world. Not saying YOU are doing that, but a lot of people on your side do that. It's annoying, cheap, and just emboldens people against you.

quote:
Never said anything was killing the planet. I said things have been fucked up by people. That is a fact. I am not an environmentalist in any way.


Okay man then we're cool.


RE: Ideological nonsense
By Jeffk464 on 8/7/2012 8:45:55 PM , Rating: 2
"We are animals"

The correct term is "clever monkeys" :)


RE: Ideological nonsense
By Reclaimer77 on 8/8/2012 8:28:16 AM , Rating: 2
lol clever upright monkey mammal things :P


RE: Ideological nonsense
By amosbatto on 8/9/2012 9:34:31 PM , Rating: 2
quote:
People are NOT going to accept a lower standard of living because you tell them they are killing the planet. So give it up. It's not true anyway, but even if it was, you're wasting your time. The same drive that spurred us to dominate this planet also drives us, individually, to acquire things. Like money, a house, cars, etc etc.

The problem is that if we don't reduce our greenhouse gases by 80% to 90%, we are going to be experiencing a drastic reduction in our standard of living. We are not going to have enough of the essential things like food and fresh water.

So basically the choice is between a small reduction in our material consumption in the short term or mass starvation and a hellish planet in the long term. Our own self interest should lead us to change, but short term seems to win out over long term so we do nothing.

Looking at human history, it is not surprising that we act this way. Jared Diamond's Collapse shows that civilizations have made this choice over and over to destroy themselves rather than change.


RE: Ideological nonsense
By ClownPuncher on 8/7/2012 3:47:53 PM , Rating: 2
He was talking about Mankind, the wrestler.


RE: Ideological nonsense
By Tony Swash on 8/7/2012 3:41:57 PM , Rating: 2
quote:
plant and animal extinctions,


References to human caused extinctions get tossed around a lot. Sometimes it is claimed there have been thousands of extinction, that hundreds, sometimes even thousands, of species are going extinct every year.

I say that's bullshit.

If you say it isn't bullshit then please list at least some of the species that have been driven to extinction in, say, the last fifty years.

For anyone interested in the scientific facts about extinctions (spoiler - there have not been that many) have a look at this article entitled "Where Are The Corpses?"

http://wattsupwiththat.com/2010/01/04/where-are-th...


RE: Ideological nonsense
By Tony Swash on 8/7/2012 3:42:05 PM , Rating: 2
quote:
plant and animal extinctions,


References to human caused extinctions get tossed around a lot. Sometimes it is claimed there have been thousands of extinction, that hundreds, sometimes even thousands, of species are going extinct every year.

I say that's bullshit.

If you say it isn't bullshit then please list at least some of the species that have been driven to extinction in, say, the last fifty years.

For anyone interested in the scientific facts about extinctions (spoiler - there have not been that many) have a look at this article entitled "Where Are The Corpses?"

http://wattsupwiththat.com/2010/01/04/where-are-th...


RE: Ideological nonsense
By homernoy on 8/7/12, Rating: -1
RE: Ideological nonsense
By ebakke on 8/7/2012 4:51:57 PM , Rating: 2
quote:
And even one species humans wipe out is one too many in my opinion.
Even one?! I can tolerate a lot more than one. I'm not saying we should go around trying to exterminate things, but if it happens here or there...[shrug]


RE: Ideological nonsense
By homernoy on 8/7/2012 5:17:10 PM , Rating: 2
I think you're missing my point. One here and one there starts to add up. If you don't care, that's your right. I just don't like seeing animal or plant species disappear. And this is just how I feel about it. I have no militant stance, and am firmly in the middle about most issues.


RE: Ideological nonsense
By ebakke on 8/7/2012 4:54:26 PM , Rating: 2
Also, what is your opinion of global eradication of diseases? These occur (or rather, occurred) naturally and humans have seen fit to alter the natural course and remove them from the planet. Thoughts?


RE: Ideological nonsense
By homernoy on 8/7/2012 5:22:58 PM , Rating: 2
Listen, I am not an extremist. It sounds hypocritical but I think pathogens that harm or kill people should be controlled or eradicated if possible. Unfortunately these micro organisms are far more resilient than say, a flightless bird from New Zealand.


RE: Ideological nonsense
RE: Ideological nonsense
By homernoy on 8/7/2012 5:25:42 PM , Rating: 2
Hippies? You from the 60's or something?


RE: Ideological nonsense
By Tony Swash on 8/7/2012 5:45:38 PM , Rating: 2
quote:
Here is a list of species recently extinct in the wild.

http://en.wikipedia.org/wiki/Extinct_in_the_Wild

Looks like the last of this species died in June. And even one species humans wipe out is one too many in my opinion. You can argue semantics all day long with recent numbers, and how large the extinction numbers need to be for relevance.

http://www.dailymail.co.uk/sciencetech/article-216...


So the figure you quote from Wikipedia is for a total of 12 species since 1840.

Using data from the link I included in my previous comment that looks like a bit of an under estimate, the paper I referenced gives the following:

Grand Total Extinct Mammal Species is 61 species in 500 years
of which 58 were highly vulnerable island species (low numbers, limited habitat)

Out of a total of 4,428 known mammal species not restricted to islands (i.e. continental species) only three mammals have gone extinct in the last 500 years. These were the Bluebuck antelope, South Africa; the Algerian gazelle, Algeria; and the Omilteme cottontail rabbit, Mexico.

Grand Total Extinct Bird Species is 129 species in 500 years
of which 123 were highly vulnerable island species (low numbers, limited habitat)

Out of a total of 8,971 known continental bird species 6 have gone extinct in 500 years.

Note that most of the extinctions above took place a long time ago, that the rate of extinctions appears to have fallen sharply in recent decades, even though the amount of specie monitoring has vastly increased.

It is worth bearing in mind that there are an estimated total of 8.7 million species on earth.

So what you have is a picture of very, very low levels of actual extinctions.

Even if the rate of extinctions were to quadruple in the next 500 years, and even if we assume that the rate of extinctions for continental species accelerates massively to match the rate of island extinctions then we get an absolutely worst case nightmare scenario of a total of 760 bird and mammal species going extinct in the next 500 years out of a total of 8.7 million species.

Frankly that doesn't seem worth worrying about. It certainly is not something that should be used as a convincing case for slowing or restricting economic development (or more accurately prolonging human poverty, suffering and premature death), nor should it be an issue which is used to whip up alarm about the impact of human activity on the environment.

The constant use of the term 'endangered species' and the banding around of wild figures for extinctions based solely on computer models and not on real world observations is a constant feature of environmentalist campaigning. It is pure propaganda and is not based on any actually observed pattern of extinction.


RE: Ideological nonsense
By homernoy on 8/7/2012 6:01:53 PM , Rating: 2
I honestly don't think you've bothered to read anything I wrote. I never used the words 'mass extinction', I just said man causes extinctions. That's a fact. I didn't state numbers...you did. Also, this issue is far more complex than you lead on. Just because there a a few left of a certain species does not mean everything is ok.

Here is an example:

http://www.personal.psu.edu/nwb107/rhino.html

And why anyone would not want to stop or slow extinction is beyond me. You act like it's a personal attack on you. It's not. It's my opinion like I stated in other posts.


RE: Ideological nonsense
By Reclaimer77 on 8/7/2012 6:11:52 PM , Rating: 2
The only extinctions we've caused is from directly hunting a species to extinction. And guess what? Animals do this to other animals all the time thorough history.

Most of the species on your list it cannot credibly be stated that mankind has directly caused their plight. Recent DNA discoveries of some endangered species has proven a big problem is that there is not enough genetic diversity.

Also you've conveniently left out the fact that mankind has interfered with nature to preserve species that would have died out as well.

Earlier you accused me of being religious because I didn't have your point of view on this. Which is curious because you don't seem to have a very firm grasp on the evolutionary process.


RE: Ideological nonsense
By homernoy on 8/7/2012 6:21:06 PM , Rating: 2
I did not accuse you of being religious. I asked if you were. Also, I did post a link to animals extinct in the wild and that makes it quite obvious they are being kept from extinction by people.


RE: Ideological nonsense
By glennco on 8/8/2012 2:46:53 AM , Rating: 2
i wouldnt bother


RE: Ideological nonsense
By Tony Swash on 8/7/2012 7:31:58 PM , Rating: 2
I repeat the rate extinctions seems to be slowing and very, very low. Its not a big problem and there is no evidence based on real world observed data that the rate extinction is accelerating. It will be shame if some large mammals go extinct but not a disaster and it is not likely. Mostly what I expect to see is that a number of large land mammals will be restricted to living in large nature parks. Environmentalists should stop tossing around doom mongering about extinctions, none of it is based on fact.


RE: Ideological nonsense
By wordsworm on 8/8/2012 10:23:15 PM , Rating: 2
Man, that's the dumbest thing you've ever said. I expect dumb stuff like this from the conservative right wing nut jobs that post comments here, but somehow you saying crap like this surprised me. The rate of extinction is accelerating. This is a fact, not a theory. The theory is that mankind is the cause.


RE: Ideological nonsense
By amosbatto on 8/9/2012 4:53:51 PM , Rating: 1
quote:
References to human caused extinctions get tossed around a lot. Sometimes it is claimed there have been thousands of extinction, that hundreds, sometimes even thousands, of species are going extinct every year. I say that's bullshit. If you say it isn't bullshit then please list at least some of the species that have been driven to extinction in, say, the last fifty years.


First of all, estimating extinction rates is very tricky and there is a great deal of debate whether biologists are doing it correctly. See: http://www.livescience.com/14216-overestimation-ex...

However, there is a wide consensus among biologists that the world is currently loosing species at a faster rate than in the past. The debate is whether we are currently entering a mass extinction and comparisons of the current extinction rate with the normal background extinction rate.

Here is the wikipedia summary on the issue:

According to a 1998 survey of 400 biologists conducted by New York's American Museum of Natural History, nearly 70 percent believed that they were currently in the early stages of a human-caused extinction,[33] known as the Holocene extinction. In that survey, the same proportion of respondents agreed with the prediction that up to 20 percent of all living populations could become extinct within 30 years (by 2028). Biologist E. O. Wilson estimated [6] in 2002 that if current rates of human destruction of the biosphere continue, one-half of all species of life on earth will be extinct in 100 years.[34] More significantly the rate of species extinctions at present is estimated at 100 to 1000 times "background" or average extinction rates in the evolutionary time scale of planet Earth.[35]

See: http://en.wikipedia.org/wiki/Extinction#Modern_ext...


RE: Ideological nonsense
By Rott3nHIppi3 on 8/7/2012 4:00:02 PM , Rating: 1
quote:
Man kind has pretty much fucked up everything else in nature (plant and animal extinctions, pollution, deforestation, seawater acidification), why is it so controversial to examine the possibility that we might be fucking up the worlds climate as well?


So... it was man that wiped out the dinosaurs (Meteor), the people of Pompeii (Volcano), The Tlingit tribes of Alaska (Glaciers), 10000 japanese (Tsunami), 830,000 chinese (Earthquake), etc.. etc.. etc... Call me crazy, but I'd say Nature has fucked up more nature than humans (minus that whole A-Bomb)!


RE: Ideological nonsense
By homernoy on 8/7/2012 4:06:29 PM , Rating: 2
As we all know, we can't control nature, but we can do better in what we do. Hey I'm not trying to say global warming is a fact, I am saying it's a real possibility. If that's the case I think people should look at it more objectively and with less of a black and white opinion.


RE: Ideological nonsense
By Rott3nHIppi3 on 8/7/2012 4:12:33 PM , Rating: 2
Not according to Al Gore and the rest of the extreme left. That's why you see so much back and forth on this issue in these debates. The question is not whether or not global warming is real (we know its real at some point.. how else do you come out of ice ages?), its the question of whether man has an influence and if so.... to what degree can 'man' influence earthquakes and Tsunamis?
quote:
As we all know, we can't control nature

Welcome aboard!


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