The land temperature record is contaminated by the urban heat island effect. Fully correcting the land temperature record would reduce the warming trend from 1980 to 2002 by half. The IPCC historical CO2 record may be incorrect due to inappropriate adjustments to the ice core data, and ignoring direct historical CO2 measurements. The IPCC selects and adjusts data to conform to its CO2 warming hypothesis and ignores alternative climate theories. This is the wrong way to do science. Many scientists strongly disagree with the IPCC conclusions.
The sea level data shows no increase in the recent rate of sea level rise, and no such increase is expected over the next hundred years. There has been no detected increase in severe storms and there is no reason to expect an increase in the number or intensity of hurricanes resulting from any warming assumed to be from human caused CO2 emissions.
Any increase in temperatures due to human caused CO2 emissions will likely be beneficial to human health. The CO2 fertilization effect will increase the rate of forest growth and CO2 induced crop yield increases will reduce the pressures to cut down forests for farmland expansion. This will greatly benefit animals by slowing habitat destruction.
The benefits of CO2 emissions greatly exceed any likely harmful effects. Several authorities who have studied solar cycles have warned that the Earth may soon enter a cooling phase as the Sun is expected to become less active. The atmosphere may warm because of human activity, but if it does, the expected change is unlikely to be more than 0.5 ?C, and probably less, in the next 100 years
If you let a denialist carry out the "full corrections".
t
But almost certainly isn't. The direct historical CO2 measurements are essentially worthless, for the reasons that persuaded Keeling to set up his CO2 observatory on Mauna Loa back in 1958 - there he could measure consistent and more or less stable CO2 concentrations.
The IPCC gets to select from the data that has been published in the peer-reviewed literature. The IPCC wasn't set up until the evidence for anthropogenic global warming had become extremely persuasive. Alternative climate theories still make it into the less carefully refereed bits of the peer-reviewed literature from time to time, but they get tested and falsified rapidly and reliably. The denialist propaganda machine is still dusting off failed hypotheses and ignoring the falsifications, but nobody who knows enough to use Google has any trouble finding the counter-arguments.
It would be, if that was what was going on. In fact the claim is simply evidence of wrong-headed gullibility.
Ten of the top 300 climatologists aren't fully persuaded by the evidence for anthropogenic global warming. That's probably lower than the proportion that have been institutionalised as in need of psychiatric care. Two of them - John Christy and Roy Spencer - are fundamentalist Christians, which doesn't make them eligible for psychiatric care, but does inject an irrational element into the way they evaluate scientific arguments.
Richard Lindzen's counter-arguments are self-consistent and rational, but every experimental test he's proposed has fallen foul of uncooperative facts.
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It's generally agreed that he's a contrarian by nature - it isn't a problem that need psychiatric care, but it is an irrational motivation.
,
Sea level is currently rising at about 3.3mm per year
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The IPCC expect between 0.18 and 0.59 metres of rise by the end of the century, but this explicitly ignores the ice now sliding off the Greenland and Antarctic ice sheets - the rate at which the ice flows is difficult to model. We do know that the Laurentide ice sheet, which covered most of Canada during the last ice age, didn't melt in place, but rather slid off into the North Atlantic in large chunks at the end of the last ice age. Some authorities think that this is what turned off the Gulf Stream for 1300 years, some 12,000 years ago
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It's worth worrying about.
Not true
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That's not true either. Hurricanes can only occur over sea water that is warmer than 26.5 =B0C (79.7 =B0F) down to depth of 50 metres
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They become more intense as you move further away from the equator. Anthropogenic global warming is progressively providing larger areas of warm-enough water progressively further from the equator, so we are eventually going to get more hurricanes, and some of them are going to be more intense than anything we have seen recently. Hurricanes are relatively rare, so it's going to take quite a while to accumulate the statistics to prove that there has been a significant increase, but it might be prudent to slow the process before we've got cast iron evidence that it is going on.
y
Unlikely.
e
Extra CO2 helps forest and crop growth if there's enough water and other nutrients. The geological evidence is that plants exploit higher atmospheric CO2 levels by shrinking the size of their stomata, to get the same amount of CO2 while losing less water, which is to say that getting enough water is more important than getting enough CO2.
Changing weather patterns will probably have a much larger effect - animals are going to have adapt to changed world.
Our society, agriculture and land use is closely adapted to way the world is at the moment. Climate change is going to change the world, and we'll have to adapt to the new conditions. The "winners" will have to work hard to recognise and exploit the new opportunities. The losers will starve.
rth
ve.
The effect is very small, and the "authorities" involved are not taken seriously by anybody outside the denialist propaganda machine.
The atmosphere has already warmed by about 0.8 =B0C (1.4 =B0F) over the last century, and is expected to warm by 2.4 to 6.4 =B0C (4.3 to 11.5 =B0F) by the end of this century.
Gregory Shaw doesn't know what he's talking about.
It's posts like this that make me wish that Pan had a feature that let me block not only all posts from any given troll, but all threads _originated_ by a post from said troll.
(sub-threads, too, for that matter).
And -- cigarettes don't cause cancer.
--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?
Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com
That's what I tried to get Agent to incorporate, so I don't have to run macro-based filters. So Agent just released v7... doesn't add shit... don't buy it. ...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
I will say, though, that the Metalworking group has gotten a lot better ever since I started identifying obnoxious posts by keyword ('liberal', 'conservative', 'president', 'gay', etc.) and killing _anything_ with that word.
Still tedious, but at least the SNR goes up.
--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?
Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com
If you're using Agent, check out the ctrl-G feature... pain in the ass because you'll have to write a macro around it, but it'll get everything. ...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
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