orangeblooded2
**Temple of Truth**
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Carbon dioxide and other gases generated by human activities overwhelmed a 21,000-year cycle linked to gradual changes in Earth's orbit around the Sun, an international team of researchers reported on Thursday in the journal Science.
IP - when you say the prevalent thinking of the day was that we were entering a cooling period - you don't mean a mini-Ice Age, do you? Because, though that was thrown around in the popular press a lot, there are VERY few scientific papers suggesting that, IIRC.
No, I don't mean a mini-ice age. As you said, that was media sensationalism. The 70's were the some of the coolest years in the last 70 years, and some people thought it might be the start of a longer trend. Just like we have a tiny cooling trend the last couple of years and a few people are pointing to it as the start of a longer trend. That's what people do: look for possible patterns and try to be the first to point them out.
So can't have had a different opinion 20 and 40 years ago? A lot of new technologies and information have come about since then. just sayin'. Seems hardly damning to be taking a quote from 20 years before i was born. The prevalent thinking of the day in the 70's was that we were entering a cooling period, because of the small scale cooling trend at the time. The warming trend that people speak of now actually encompasses this cooling trend.
But such humility and skepticism seem to manifest themselves only when the data point to something other than the mainstream narrative about global warming. For instance, when we have terribly hot weather, or bad hurricanes, the media see portentous proof of climate change. When we dont, its a moment to teach the masses how weather and climate are very different things.
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But we live in a moment when we are told, nay lectured and harangued, that if we use the wrong toilet paper or eat the wrong cereal, we are frying the planet. But the sun? Well, thats a distraction. Dont you dare forget your reusable shopping bags, but pay no attention to that burning ball of gas in the sky its just the only thing that prevents the planet from being a lifeless ball of ice engulfed in darkness. Never mind that sunspot activity doubled during the 20th century, when the bulk of global warming has taken place.
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What does it say that the modeling that guaranteed disastrous increases in global temperatures never predicted the halt in planetary warming since the late 1990s? (MITs Richard Lindzen says that there has been no warming since 1997 and no statistically significant warming since 1995.) What does it say that the modelers have only just now discovered how sunspots make the Earth warmer?
I dont know what it tells you, but it tells me that maybe we should study a bit more before we spend billions (trillions if you consider costs passed on to the American consumer)gs to solve a problem we dont understand so well.
That's one hell of a "fringe."
SOME species of Australian birds are shrinking and the trend will likely continue because of global warming, a scientist said.
Janet Gardner, an Australian National University biologist, led a team of scientists who measured museum specimens to plot the decline in size of eight species of Australian birds over the past century.
The research, published last week in the British journal Proceedings of the Royal Society B: Biological Sciences, found the birds in Australias southeast had become between 2 per cent to 4 per cent smaller.
Over the same century, Australias average daily temperature rose 1.3 degrees Fahrenheit (0.7 deg C), with the sharpest increase since the 1950s.
Source:- Global Warming Shrinks Birds: Study By Janet Gardner, An Australian National University Biologist | Lifeofearth.org
SOME species of Australian birds are shrinking and the trend will likely continue because of global warming, a scientist said.
Janet Gardner, an Australian National University biologist, led a team of scientists who measured museum specimens to plot the decline in size of eight species of Australian birds over the past century.
The research, published last week in the British journal Proceedings of the Royal Society B: Biological Sciences, found the birds in Australia’s southeast had become between 2 per cent to 4 per cent smaller.
Over the same century, Australia’s average daily temperature rose 1.3 degrees Fahrenheit (0.7 deg C), with the sharpest increase since the 1950s.
Source:- Global Warming Shrinks Birds: Study By Janet Gardner, An Australian National University Biologist | Lifeofearth.org
That's one hell of a "fringe."
I thought the same thing, but then I questioned what he meant by catastrophic. There is no way that those who actively research AGW are fringe - they represent the mainstream view of dynamic climatologists, for example. However, making predictions about temperature increases and warning of world-wide *catastrophe* are different, in my eyes. There are very respectable scientists who warn of dire consequences....I'm not sure they are all catastrophic, though...
One cause of the blunders that have made the Met Office a laughing stock is less widely appreciated, however. It is that the multi-million pound (sterling)gs computer it uses to assist its short-term forecasting for Britain is also one of the four main official sources of data used by the UN's Intergovernmental Panel on Climate Change (IPCC) to predict global warming. In this respect the IPCC's computer models have proved just as wrong in predicting global temperatures as the Met Office has been in forecasting those mild winters and heatwave summers.
Back in 1990, Mrs Thatcher, temporarily under the spell of the prophets of runaway global warming, authorised lavish funding for the then-head of the Met Office, Sir John Houghton, to set up its Hadley Centre in Exeter, as a "world-class centre for research into climate change". It was linked to the Climate Research Unit (CRU) at the University of East Anglia, to create a record of global temperatures based on surface weather stations across the world, a data set known as HadCrut. Sir John himself played a key role at the top of the new IPCC as chairman of its scientific working group.
Sir John was a fervent believer in the theory that the cause of global warming is man-made CO2, and the HadCrut computer models, run by his CRU ally Professor Phil Jones, were programmed accordingly.
When Mr McIntyre made Freedom of Information requests to see the data used to construct the HadCrut record (as he has chronicled on his ClimateAudit blog) he was given an almighty brush-off, the Met Office saying that this information was strictly confidential and that to release it would damage Britain's "international relations" with all the countries that supplied it.
The idea that temperature records might be a state secret seems strange enough, but when the policies of governments across the world are based on that data it becomes odder still that no outsider should be allowed to see it. Weirdest of all, however, is the Met Office's claim that to release the data would "damage the trust that scientists have in those scientists who happen to be employed in the public sector".
Not a fringe, gs. It doesn't matter how you slice it. If they are wrong, then they are an incorrect majority. In my experience, those who accept AGW (if we are including those who don't think we will see *catastrophic* consequences) represent a majority of scientists. Again, that is my experience, I haven't seen a good poll...
GS - I know that you have mentioned that world temperatures go as sun's output goes, and that is true (it is just that the fluctuations are usually small enough to not make that much of a difference). Extended downturns would obviously cool us off, because our temperature is obviously dependent first and foremost on the getting radiation from the sun. The point is that this variable doesn't change to a great extent, so while it is a huge driver of climate, it isn't a large driver of climate change, unless it enters prolonged changes.
If we are entering a sustained and deep solar minimum, then we could see temperatures drop. If they don't, and the solar activity is decreasing as might be indicated by the sunspot plot you show, then it may be masking warming that would otherwise be happening at constant solar output.
But the main arguments being made for a solar-climate connection is not so much to do with the heat of the Sun (the sun isn't necessarily getting warmer) but rather with its magnetic cycles.
When the Sun is more magnetically active (typically around the peak of the 11-year sunspot cycle --we are a few yrs away at the moment), the Sun's magnetic field is better able to deflect away incoming galactic cosmic rays (highly energetic charged particles coming from outside the solar system).
The GCRs are thought to help in the formation of low-level cumulus clouds -the type of clouds that BLOCK sunlight and help cool the Earth.
So when the Sun's MF is acting up (not like now -the next sunspot max is expected in about 2013, according to the latest predictions), less GCRs reach the Earth's atmosphere, less low level, sunlight-blocking clouds form, and more sunlight gets through to warm the Earth's surface...naturally.
Clouds are basically made up of tiny water droplets. When minute particles in the atmosphere become ionized by incoming GCRs they become very 'attractive' to water molecules, in a purely chemical sense of the word.
The process by which the Sun's increased magnetic field deflects incoming cosmic rays is very similar to the way magnetic fields steer electrons in a cathode ray tube (old-time television tube) or electrons and other charged particles around the ring of a subatomic particle accelerator.
The Center for Sun-Climate Research at the DNSC (Danish National Space Center) investigates the connection between variations in the intensity of cosmic rays and climatic changes on Earth.
This field of research has been given the name 'cosmoclimatology'"..."Cosmic ray intensities and therefore cloudiness keep changing because the Sun's magnetic field varies in its ability to repel cosmic rays coming from the Galaxy, before they can reach the Earth."
"Sunspot numbersover the past 11,400 years have been reconstructed using dendrochronologically dated radiocarbon concentrations.
The level of solar activity during the past 70 years is exceptional the last period of similar magnitude occurred over 8,000 years ago.
The Sun was at a similarly high level of magnetic activity for only ~10% of the past 11,400 years, and almost all of the earlier high-activity periods were shorter than the present episode." (Solanki, Sami K.; Usoskin, Ilya G.; Kromer, Bernd; Schüssler, Manfred & Beer, Jürg (2004), Unusual activity of the Sun during recent decades compared to the previous 11,000 years)
From NASA's Solar and Heliospheric Observatory's "Not So Frequently Asked Questions" section:
Q-Does the number of sunspots have any effect on the climate here on Earth?
A-Sunspots are slightly cooler areas on the surface of the Sun, due to the intense magnetic fields, so they radiate a little less energy than the surroundings.
However, there are usually nearby areas associated with the sunspots that are a little hotter (called falculae), and they more than compensate.
The result is that there is a little bit more radiation coming from the Sun when it has more sunspots, but the effect is so small that it has very little impact on the weather and climate on Earth.
However, there are more important indirect effects:
sunspots are associated with what we call "active regions", with large magnetic structures containing very hot material (being held in place by the magnetism).
This causes more ultraviolet (or UV) radiation (the rays that give you a suntan or sunburn), and extreme ultraviolet radiation (EUV).
These types of radiation have an impact on the chemistry of the upper atmosphere (e.g. producing ozone). Since some of these products act as greenhouse gases, the number of sunspots (through association with active regions) may influence the climate in this way.
Many active regions produce giant outflows of material that are called Coronal Mass Ejections.
These ejections drag with them some of the more intense magnetic fields that are found in the active regions. The magnetic fields act as a shield for high-energy particles coming from various sources in our galaxy (outside the solar system).
These "cosmic rays" (CRs) cause ionization of molecules in the atmosphere, and thereby can cause clouds to form (because the ionized molecules or dust particle can act as "seeds" for drop formation).
If clouds are formed very high in the atmosphere, the net result is a heating of the Earth - it acts as a "blanket" that keeps warmth in.
If clouds are formed lower down in the atmosphere, they reflect sunlight better than they keep heat inside, so the net result is cooling. Which processes are dominant is still a matter of research.
SOHO
If man does contribute to warming that might be catastrophic, maybe we'll get early and the earth will wobble in its orbit to nudge us cooler - why not?
Let's say you are on the high dive board about to plunge into the deep end but can't tell if there is water in the pool, you shout down to others near the pool and ask for their opinion and they can't agree.
Does is matter who is in the majority or does it matter who is right??