Wednesday, April 09, 2008

Sunspot activity and Global warming

A picture says a thousand words.
Solar irradiance decreased dramatically from about 1980-1987, while the average global temperature increased. The current level of solar irradiance is roughly what it was 25 years ago, but the average global temperature is about 0.4°C higher.
Almost NOBODY in climate science uses this as a serious piece of evidence against anthropogenic global warming anymore.
The only reason people like Mike would come up with this is because they selectively search for things on the internet in hopes of supporting what they already have decided that they want to believe. Same for evolution. Instead of absorbing the mountains of evidence for it first, these people will selectively search the internet for the handful of people scribbling out their favorite conspiracy theories.


Anonymous said...

There was a slight cooling starting in 1991 through the early part of the 90's.

The reason this happens is that earth temperatures actually lag sun temperatures, implying an actual causation.

The only way I guess is to find out. The solar crowd predicts cooling in the next few decades, especially quite soon, and the warmists predict, well, warming. We will just have to see.

Aaron said...

Top climate scientists whose opinions are endorsed by every major climate science organization in the U.S. believe that CO2 forcing is about 13 times more responsible for the current warming than solar output. The reason why all these institutions and leaders of their field agree is because the skeptics theories were tested and they were not supported by the scientific data. If they were, then everyone would have changed their minds.

Aaron said...

Update Mike. In case you didn't believe me the first time. There was a new report in the news just last thursday:

"Scientists have produced further compelling evidence showing that modern-day climate change is not caused by changes in the Sun's activity. "

"The research contradicts a favoured theory of climate "sceptics", that changes in cosmic rays coming to Earth determine cloudiness and temperature.

The idea is that variations in solar activity affect cosmic ray intensity.

But UK scientists found there has been no significant link between cosmic rays and cloudiness in the last 20 years. "

"The Intergovernmental Panel on Climate Change (IPCC), in its vast assessment of climate science last year, concluded that since temperatures began rising rapidly in the 1970s, the contribution of humankind's greenhouse gas emissions has outweighed that of solar variability by a factor of about 13 to one. "

Once again I ask you, now what? What will you come up with next?

Anonymous said...

yep, the sun's unusual activity is nothing but Mike's conspiracy, including the flares in '03 which pegged NASA's meters. You need to contact them and tell them this is all just a silly paranoid delusion of Mike's so those NASA scientists will stop scaring people with all that fake data}:-

Aaron said...

That's interesting Mike, because this is the official statement of NASA concerning global warming, on their own website:

Causes of global warming

Climatologists (scientists who study climate) have analyzed the global warming that has occurred since the late 1800's. A majority of climatologists have concluded that human activities are responsible for most of the warming. Human activities contribute to global warming by enhancing Earth's natural greenhouse effect. The greenhouse effect warms Earth's surface through a complex process involving sunlight, gases, and particles in the atmosphere. Gases that trap heat in the atmosphere are known as greenhouse gases.

The main human activities that contribute to global warming are the burning of fossil fuels (coal, oil, and natural gas) and the clearing of land. Most of the burning occurs in automobiles, in factories, and in electric power plants that provide energy for houses and office buildings. The burning of fossil fuels creates carbon dioxide, whose chemical formula is CO2. CO2 is a greenhouse gas that slows the escape of heat into space. Trees and other plants remove CO2 from the air during photosynthesis, the process they use to produce food. The clearing of land contributes to the buildup of CO2 by reducing the rate at which the gas is removed from the atmosphere or by the decomposition of dead vegetation.

A small number of scientists argue that the increase in greenhouse gases has not made a measurable difference in the temperature. They say that natural processes could have caused global warming. Those processes include increases in the energy emitted (given off) by the sun. BUT THE VAST MAJORITY OF CLIMATOLOGISTS BELIEVE THAT INCREASES IN THE SUN'S ENERGY HAVE CONTRIBUTED ONLY SLIGHTLY TO RECENT WARMING.

I added the caps so you wouldn't have to grab your reading glasses. Looks like your '03 flairs (almost certainly cited from some talk radio right wing bullshit program or blog) weren't even enough to convince the organization you are citing! Why should they convince me, or you for that matter?

Aaron said...
This comment has been removed by the author.
upinVermont said...


And I quote:


Yahoo Question: "Why do people believe the lies that liberal organizations such as NASA and the IPCC tell them?

* 2 months ago

Answer: "They are liberal becasue most scientifc organizations are liberal."

Go read it for yourself. It's on the Internet. I must be true.

upinVermont said...

The website is:

Aaron said...

Science has been over-run by liberals. Even NASA says the "vast majority" of climate scientists believe that human CO2 forcing is a much greater cause of global warming than solar variance. They admit it themselves that the vast majority of climate scientists are filthy liberals. They just want kickbacks from Al Gore.

If global warming somehow cut my taxes then I MIIIGGGHHTT start considering that it's true. But until then, I'm sticking with Rush on this issue. He knows better than "the vast majority of climate scientists/liberals". Pshh.

smajdk said...

Balance, in the early 80s, the Great Salt Lake was in peril of drying, oh! what to do! In the mid
80s the Great Salt Lake was encroaching on SLC Intl. Airport, oh! what to do! Friends, the only real science predicts that "Global Warming" SIC causes "Global Cooling" SIC. Do not despair, for God (The Light, The Supreme Entity,
etc.) will run things as usual. We were blessed with a Quantum Brain, so remember you cannot think in a box because the thought can still be found elsewhere.