Showing posts with label iceage. Show all posts
Showing posts with label iceage. Show all posts

Saturday, April 26, 2008

SORRY TO RUIN THE FUN, BUT AN ICE AGE COMETH

I was reading our good friend, and one of the last true cavemen, Cavey's blog, about all the things that global warming is, can, and will cause.  Reading his reminded me of this article I came across this past week. An alternative view of our climate today.  The author puts all of his information, from global warming, to The Little Ice Age, The Medieval Warm Period, Sunspots, and historical records.  I think you will find this article very interesting to say the least.  And without the Medieval Warm Period, we wouldn't have the wonderful history of the Vikings!  (I have to give it to the Aussies, I find some of the most interesting and thought provoking articles and information from their news sites) 

It is on the long side, but I hope you enjoy the article   JohnOh

 

SORRY TO RUIN THE FUN,

BUT AN ICE AGE COMETH

by: Phil Chapman --  April 23, 2008 -- The Australian

THE scariest photo I have seen on the internet is www.spaceweather.com, where you will find a real-time image of the sun from the Solar and Heliospheric Observatory, located in deep space at the equilibrium point between solar and terrestrial gravity.

What is scary about the picture is that there is only one tiny sunspot.

Disconcerting as it may be to true believers in global warming, the average temperature on Earth has remained steady or slowly declined during the past decade, despite the continued increase in the atmospheric concentration of carbon dioxide, and now the global temperature is falling precipitously.

All four agencies that track Earth's temperature (the Hadley Climate Research Unit in Britain, the NASA Goddard Institute for Space Studies in New York, the Christy group at the University of Alabama, and Remote Sensing Systems Inc in California) report that it cooled by about 0.7C in 2007. This is the fastest temperature change in the instrumental record and it puts us back where we were in 1930. If the temperature does not soon recover, we will have to conclude that global warming is over.

There is also plenty of anecdotal evidence that 2007 was exceptionally cold. It snowed in Baghdad for the first time in centuries, the winter in China was simply terrible and the extent of Antarctic sea ice in the austral winter was the greatest on record since James Cook discovered the place in 1770.

It is generally not possible to draw conclusions about climatic trends from events in a single year, so I would normally dismiss this cold snap as transient, pending what happens in the next few years.

This is where SOHO comes in. The sunspot number follows a cycle of somewhat variable length, averaging 11 years. The most recent minimum was in March last year. The new cycle, No.24, was supposed to start soon after that, with a gradual build-up in sunspot numbers.

----This link is the site mentioned, for the sunspot activity, http://www.spaceweather.com/   also interesting for sun photos through different filters AND a fantastic series of Rainbow pictures and rare rainbow effects from around the world -- John--

 It didn't happen. The first sunspot appeared in January this year and lasted only two days. A tiny spot appeared last Monday but vanished within 24 hours. Another little spot appeared this Monday. Pray that there will be many more, and soon.

The reason this matters is that there is a close correlation between variations in the sunspot cycle and Earth's climate. The previous time a cycle was delayed like this was in the Dalton Minimum, an especially cold period that lasted several decades from 1790.

Northern winters became ferocious: in particular, the rout of Napoleon's Grand Army during the retreat from Moscow in 1812 was at least partly due to the lack of sunspots.

That the rapid temperature decline in 2007 coincided with the failure of cycle No.24 to begin on schedule is not proof of a causal connection but it is cause for concern.

It is time to put aside the global warming dogma, at least to begin contingency planning about what to do if we are moving into another little ice age, similar to the one that lasted from 1100 to 1850.

There is no doubt that the next little ice age would be much worse than the previous one and much more harmful than anything warming may do. There are many more people now and we have become dependent on a few temperate agricultural areas, especially in the US and Canada. Global warming would increase agricultural output, but global cooling will decrease it.

Millions will starve if we do nothing to prepare for it (such as planning changes in agriculture to compensate), and millions more will die from cold-related diseases.

There is also another possibility, remote but much more serious. The Greenland and Antarctic ice cores and other evidence show that for the past several million years, severe glaciation has almost always afflicted our planet.

The bleak truth is that, under normal conditions, most of North America and Europe are buried under about 1.5km of ice. This bitterly frigid climate is interrupted occasionally by brief warm interglacials, typically lasting less than 10,000 years.

The interglacial we have enjoyed throughout recorded human history, called the Holocene, began 11,000 years ago, so the ice is overdue. We also know that glaciation can occur quickly: the required decline in global temperature is about 12C and it can happen in 20 years.

The next descent into an ice age is inevitable but may not happen for another 1000 years. On the other hand, it must be noted that the cooling in 2007 was even faster than in typical glacial transitions. If it continued for 20 years, the temperature would be 14C cooler in 2027.

By then, most of the advanced nations would have ceased to exist, vanishing under the ice, and the rest of the world would be faced with a catastrophe beyond imagining.

Australia may escape total annihilation but would surely be overrun by millions of refugees. Once the glaciation starts, it will last 1000 centuries, an incomprehensible stretch of time.

If the ice age is coming, there is a small chance that we could prevent or at least delay the transition, if we are prepared to take action soon enough and on a large enough scale.

For example: We could gather all the bulldozers in the world and use them to dirty the snow in Canada and Siberia in the hope of reducing the reflectance so as to absorb more warmth from the sun.

We also may be able to release enormous floods of methane (a potent greenhouse gas) from the hydrates under the Arctic permafrost and on the continental shelves, perhaps using nuclear weapons to destabilise the deposits.

We cannot really know, but my guess is that the odds are at least 50-50 that we will see significant cooling rather than warming in coming decades.

The probability that we are witnessing the onset of a real ice age is much less, perhaps one in 500, but not totally negligible.

All those urging action to curb global warming need to take off the blinders and give some thought to what we should do if we are facing global cooling instead.

It will be difficult for people to face the truth when their reputations, careers, government grants or hopes for social change depend on global warming, but the fate of civilisation may be at stake.

In the famous words of Oliver Cromwell, "I beseech you, in the bowels of Christ, think it possible you may be mistaken."

Phil Chapman is a geophysicist and astronautical engineer who lives in San Francisco. He was the first Australian to become a NASA astronaut.

 

For More Information on The Little Ice Age, and The Medieval Warming  following are some links --John

http://www.whoi.edu/page.do?pid=12455&tid=282&cid=10046   On The Brink of a new Little Ice Age? --  Woods Hole Institute

http://www.ncdc.noaa.gov/paleo/ctl/resource1000.html     NOAA National Satellite and Information Service

http://www.whoi.edu/page.do?pid=12455   Abrupt Climate Change -- Woos Hole Institute

http://www.pbs.org/saf/1505/features/lia.htm  Hot Planet Cold Comfort -- Scientific American Frontiers  PBS

http://www2.sunysuffolk.edu/mandias/lia/vikings_during_mwp.html  The Vikings During the Medieval Warm Period --

 

Saturday, February 9, 2008

NO MORE GORE'S WARMING WARNING??

A very interesting alternative view on the Global Climate,  I have never thought that we were completely reponsible, as some are saying.  That being stated that does not let us off the hook for improving what we as a species have done and are doing to our blue water home.  Hope you enjoy the article.  Then you can decide whether to buy stock in sun screen and summer wear, or thermal underwear and winter gear.  -- John

 

"There are three kinds of lies: lies, damned lies and statistics."
--Benjamin Disraeli--

 

The Sun Also Sets

By INVESTOR'S BUSINESS DAILY | Posted Thursday, February 07, 2008 4:20 PM PT

Climate Change: Not every scientist is part of Al Gore's mythical "consensus." Scientists worried about a new ice age seek funding to better observe something bigger than your SUV — the sun.

Back in 1991, before Al Gore first shouted that the Earth was in the balance, the Danish Meteorological Institute released a study using data that went back centuries that showed that global temperatures closely tracked solar cycles.

To many, those data were convincing. Now, Canadian scientists are seeking additional funding for more and better "eyes" with which to observe our sun, which has a bigger impact on Earth's climate than all the tailpipes and smokestacks on our planet combined.

And they're worried about global cooling, not warming.

Kenneth Tapping, a solar researcher and project director for Canada's National Research Council, is among those looking at the sun for evidence of an increase in sunspot activity.

Solar activity fluctuates in an 11-year cycle. But so far in this cycle, the sun has been disturbingly quiet. The lack of increased activity could signal the beginning of what is known as a Maunder Minimum, an event which occurs every couple of centuries and can last as long as a century.

Such an event occurred in the 17th century. The observation of sunspots showed extraordinarily low levels of magnetism on the sun, with little or no 11-year cycle.

This solar hibernation corresponded with a period of bitter cold that began around 1650 and lasted, with intermittent spikes of warming, until 1715. Frigid winters and cold summers during that period led to massive crop failures, famine and death in Northern Europe.

Tapping reports no change in the sun's magnetic field so far this cycle and warns that if the sun remains quiet for another year or two, it may indicate a repeat of that period of drastic cooling of the Earth, bringing massive snowfall and severe weather to the Northern Hemisphere.

"It used to be so easy to go to the corner store!"

 

Tapping oversees the operation of a 60-year-old radio telescope that he calls a "stethoscope for the sun." But he and his colleagues need better equipment.

In Canada, where radio-telescopic monitoring of the sun has been conducted since the end of World War II, a new instrument, the next-generation solar flux monitor, could measure the sun's emissions more rapidly and accurately.

Most radio-telescope are built in the middle of nowhere. Rumor has it that a very lonely radio-telescope technician coined the term "headlights".

 

As we have noted many times, perhaps the biggest impact on the Earth's climate over time has been the sun.

For instance, researchers at the Max Planck Institute for Solar Research in Germany report the sun has been burning more brightly over the last 60 years, accounting for the 1 degree Celsius increase in Earth's temperature over the last 100 years.

R. Timothy Patterson, professor of geology and director of the Ottawa-Carleton Geoscience Center of Canada's Carleton University, says that "CO2 variations show little correlation with our planet's climate on long, medium and even short time scales."

Rather, he says, "I and the first-class scientists I work with are consistently finding excellent correlations between the regular fluctuations of the sun and earthly climate. This is not surprising. The sun and the stars are the ultimate source of energy on this planet."

Patterson, sharing Tapping's concern, says: "Solar scientists predict that, by 2020, the sun will be starting into its weakest Schwabe cycle of the past two centuries, likely leading to unusually cool conditions on Earth."

"Solar activity has overpowered any effect that CO2 has had before, and it most likely will again," Patterson says. "If we were to have even a medium-sized solar minimum, we could be looking at a lot more bad effects than 'global warming' would have had."

In 2005, Russian astronomer Khabibullo Abdusamatov made some waves — and not a few enemies in the global warming "community" — by predicting that the sun would reach a peak of activity about three years from now, to be accompanied by "dramatic changes" in temperatures.

A Hoover Institution Study a few years back examined historical data and came to a similar conclusion.

"The effects of solar activity and volcanoes are impossible to miss. Temperatures fluctuated exactly as expected, and the pattern was so clear that, statistically, the odds of the correlation existing by chance were one in 100," according to Hoover fellow Bruce Berkowitz.

The study says that "try as we might, we simply could not find any relationship between industrial activity, energy consumption and changes in global temperatures."

The study concludes that if you shut down all the world's power plants and factories, "there would not be much effect on temperatures."

But if the sun shuts down, we've got a problem. It is the sun, not the Earth, that's hanging in the balance.