Disney's fault.
Posted on 12/25/2017 8:59:19 AM PST by pa_dweller
Lead author, Henrik Svensmark, from The Technical University of Denmark has long held that climate models had greatly underestimated the impact of solar activity.
He says the new research identified the feedback mechanism through which the sun’s impact on climate was varied.
Professor Svensmark’s theories on solar impact have caused a great deal of controversy within the climate science community and the latest findings are sure to provoke new outrage.
He does not dispute that increased levels of carbon dioxide in the atmosphere have a warming impact on the climate.
But his findings present a challenge to estimates of how sensitive the climate is to changes in carbon dioxide levels in the atmosphere.
Professor Svensmark says his latest findings were consistent both with the strong rise in the rate of global temperature change late last century and a slowdown in the rate of increase over the past 20 years.
‘’It gives a physical foundation to the large body of empirical evidence showing that solar activity is reflected in variations in Earth’s climate,” a media statement accompanying the scientific report said.
“For example, the Medieval Warm Period around year 1000AD and the cold period in the Little Ice Age 1300-1900 AD both fits changes in solar activity,” it said.
“Finally we have the last piece of the puzzle of why the particles from space are important for climate on Earth,” it said.
The study reveals how atmospheric ions, produced by the energetic cosmic rays raining down through the atmosphere, helps the growth and formation of cloud condensation nuclei — the seeds necessary for forming clouds in the atmosphere.
More cloud condensation nuclei mean more clouds and a colder climate, and vice versa.
“Since clouds are essential for the solar energy reaching the surface of the Earth the implications are huge for our understanding of why climate has varied in the past and also for a future climate changes,” the statement said.
Professor Svensmark said it had until now wrongly been assumed that small additional nucleated aerosols would not grow and become cloud condensation nuclei, since no mechanism was known to achieve this.
The research team tested its ideas experimentally in a large cloud chamber.
Data was taken over a period of two years with total 3100 hours of data sampling.
Professor Svensmark said the new results gave a physical foundation to the large body of empirical evidence showing that Solar activity is reflected in variations in Earth’s climate.
“This new work gives credit to a mechanism that is much stronger than changes in solar irradiance alone,” Svensmark told The Australian.
“Solar irradiance has been the only solar forcing that has been included in climate models and such results show that the effect on climate is too small to be of importance,” he said.
“The new thing is that there exists an amplification mechanism that is operating on clouds in the atmosphere,” Svensmark said.
“Quantifying the impact of solar activity on climate from observations is found to be 5-7 times larger than from solar irradiance, and agrees with empirical variations in cosmic rays and clouds,” he said.
“This can therefore also explain why climate over the last 10,000 years correlates with solar activity, “Svensmark said.
“On time scales of millions of years there are much larger changes in the cosmic rays that has nothing to do with solar activity,” he said.
“So, this is an independent test of the mechanism and even here beautiful correlations are found,” he said.
But the Nature Communications paper says “the theory of ion-induced condensation should be incorporated into global aerosol models, to fully test the atmospheric implications.”
Professor Svensmark said since solar activity increased in the 20th century, part of the observed warming is caused by the sun.
“The logical consequence is that the climate sensitivity of CO2 is smaller than what climate models suggest which is 2-4 deg C for each doubling of CO2, since both CO2 and solar activity has had an impact”, he said.
More at link.
Anti-Science Deplorables!!!!
If you are anti-”politically-degraded”-science are you anti-”science”?
If you are anti-”politically-degraded”-science are you anti-”science”?
I want to know about the bacteria that they found growing on the OUTSIDE of the space station!
OK!! Everybody pay attention!
Lesson for today:
1. The sun is 1,300,000 times as big as the earth.
2. The sun is a giant nuclear furnace that controls the climates of all its planets.
3. The earth is one of the sun’s planets.
4. The earth is a speck in comparison to the size of the sun.
5. Inhabitants of the earth are less than specks.
Study Question: How do less-than-specks in congress plan to control the sun?
Doesn’t surprise me, go do “wiki extremophiles”.
You will read about bacteria that leave in deep ocean volcanic vents were the water is boiling and full of dissolved metals. Also there are bacterial colonies that live in the fissures & micro-cracks of subsurface rocks, not at all favorable conditions for organic life.
Recommended book the late Dr Thomas Gold’s “ Deep Hot Biosphere” (Was at Cornell!), physicist - he worked with Bondi, & Hoyle.
Disney's fault.
YA THINK!!!
IDIOTS! (educated way beyond their intelligence)
The study of climate has always given credit to solar activity as a major contributor of earth’s climate. Another major contributor is the ages old process of mother nature.
Isn’t it funny that libs blame CO2 for global warming, when everyone knows that it’s Oxygen that makes fires burn hotter, and CO2 fire extinguishers put out the fires.
Just sayin’
:^)
I’d not heard of that.
There's so much we don't know.
Maybe it's the cosmic rays hammering my memory?
Also as the galaxy rotates the solar system which is imbedded in that rotation transverses section of deep space. (one galactic rotation is like 225 - 250 million years!) This “space” has higher subatomic particle density (and maybe more energetic!) which means more particles entering the atmosphere which create particle showers which ratchet up cloud formation which significant cool the planet. The author claims major glaciations correlate with different positions on the solar system’s orbital path.
Then ad in fluxuations in the earth’s magnetic field, the sun’s magnetic field, & Jupiter & Saturn’ magnetic fluxuations. These sometimes are in sync meaning maximum protection, mostly aren’t sometimes even disappear for awhile. If all are at zero, it likely bad very bad!
atmospheric and oceanic global currents and patterns as starters.
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