Global Warming or The “New Ice Age”?

Global Warming or The “New Ice Age”? Fear of the “Big Freeze”

Top Scientists, Government Agencies Have – For Over 100 Years – Been Terrified of a New Ice Age...

By Washington's BlogGlobal Research, January 02, 2013

Washington's Blog and Global Research 16 April 2012

Theme: Environment, Science and Medicine
In-depth Report: Climate Change


There has been an intense debate among leading scientists,
government agencies and publications over whether the bigger threat is
global warming or a new ice age. As we’ve previously noted,
top researchers have feared an ice age – off and on – for more than 100
years. (This post does not weigh in one way or the other. It merely
presents a historical record.)

On February 24, 1895, the New York Times published an article
entitled “PROSPECTS OF ANOTHER GLACIAL PERIOD; Geologists Think the
World May Be Frozen Up Again”, which starts with the following
paragraph:

<blockquote>The question is again being discussed whether recent and
long-continued observations do not point to the advent of a second
glacial period, when the countries now basking in the fostering warmth
of a tropical sun will ultimately give way to the perennial frost and
snow of the polar regions.
</blockquote>
In September 1958, Harper’s wrote an article called “The Coming Ice Age”.

On January 11, 1970, the Washington Post wrote an article entitled “Colder Winters Held Dawn of New Ice Age – Scientists See Ice Age In the Future” which stated:

<blockquote>Get a good grip on your long johns, cold weather
haters–the worst may be yet to come. That’s the long-long-range weather
forecast being given out by “climatologists.” the people who study very
long-term world weather trends.
</blockquote>
In 1972, two scientists – George J. Kukla (of the Lamont-Doherty
Geological Observatory) and R. K. Matthews (Chairman, Dept of Geological
Sciences, Brown University) – wrote the following letter to President Nixon warning of the possibility of a new ice age:

<blockquote>Dear Mr. President:

Aware of your deep concern with the future of the world, we feel
obliged to inform you on the results of the scientific conference held
here recently. The conference dealt with the past and future changes of
climate and was attended by 42 top American and European investigators.
We enclose the summary report published in Science and further publications are forthcoming in Quaternary Research.

The main conclusion of the meeting was that a global deterioration of
climate, by order of magnitude larger than any hitherto experience by
civilized mankind, is a very real possibility and indeed may be due very
soon.
</blockquote>
<blockquote>The cooling has natural cause and falls within the rank
of processes which produced the last ice age. This is a surprising
result based largely on recent studies of deep sea sediments.

Existing data still do not allow forecast of the precise timing of
the predicted development, nor the assessment of the man’s interference
with the natural trends. It could not be excluded however that the
cooling now under way in the Northern Hemisphere is the start of the
expected shift. The present rate of the cooling seems fast enough to
bring glacial temperatures in about a century, if continuing at the
present pace.

The practical consequences which might be brought by such developments to existing social institution are among others:

(1) Substantially lowered food production due to the shorter growing
seasons and changed rain distribution in the main grain producing belts
of the world, with Eastern Europe and Central Asia to be first affected.

(2) Increased frequency and amplitude of extreme weather anomalies
such as those bringing floods, snowstorms, killing frosts, etc.

With the efficient help of the world leaders, the research …

With best regards,

George J. Kukla (Lamont-Doherty Geological Observatory)

R. K. Matthews (Chairman, Dept of Geological Sciences, Brown U)
</blockquote>
The White House assigned the task of looking at the claims contained
in the letter to its science agencies, especially the National Science
Foundation and NOAA, who engaged in a flurry of activity looking into the threat of an ice age.

On August 1, 1974 the White House wrote a letter to Secretary of Commerce Frederick Dent stating:

<blockquote>Changes in climate in recent years have resulted in
unanticipated impacts on key national programs and policies. Concern has
been expressed that recent changes may presage others. In order to
assess the problem and to determine what concerted action ought to be
undertaken, I have decided to establish a subcommittee on Climate
Change.
</blockquote>
Out of this concern, the U.S. government started monitoring climate.

As NOAA scientists Robert W. Reeves, Daphne Gemmill, Robert E. Livezey, and James Laver point out:

<blockquote>There were also a number of short-term climate events of
national and international consequence in the early 1970s that commanded
a certain level of attention in Washington. Many of them were linked to
the El Niño of 1972-1973.

<blockquote>A killing winter freeze followed by a severe summer heat
wave and drought produced a 12 percent shortfall in Russian grain
production in 1972. The Soviet decision to offset the losses by purchase
abroad reduced world grain reserves and helped drive up food
prices.Collapse of the Peruvian anchovy harvest in late 1972 and early
1973, related to fluctuations in the Pacific ocean currents and
atmospheric circulation, impacted world supplies of fertilizer, the
soybean market, and prices of all other protein feedstocks.

The anomalously low precipitation in the U.S. Pacific north-west
during the winter of 1972-73 depleted reservoir storage by an amount
equivalent to more than 7 percent of the electric energy requirements
for the region.
</blockquote>
</blockquote>
On June 24, 1974, Time Magazine wrote an article entitled “Another Ice Age?” which stated:

<blockquote>As they review the bizarre and unpredictable weather
pattern of the past several years, a growing number of scientists are
beginning to suspect that many seemingly contradictory meteorological
fluctuations are actually part of a global climatic upheaval. However
widely the weather varies from place to place and time to time, when
meteorologists take an average of temperatures around the globe they
find that the atmosphere has been growing gradually cooler for the past
three decades. The trend shows no indication of reversing.
Climatological Cassandras are becoming increasingly apprehensive, for
the weather aberrations they are studying may be the harbinger of
another ice age.

Telltale signs are everywhere …

Whatever the cause of the cooling trend, its effects could be
extremely serious, if not catastrophic. Scientists figure that only a 1%
decrease in the amount of sunlight hitting the earth’s surface could
tip the climatic balance, and cool the planet enough to send it sliding
down the road to another ice age within only a few hundred years.
</blockquote>
(here’s the printer-friendly version).

Science News wrote an article in 1975 called “Chilling Possibilities” warning of a new ice age.

A January 1975 article from the New York Times warned:

<blockquote>The most drastic potential change considered in the new
report (by the National Academy of Sciences) is an abrupt end to the
present interglacial period of relative warmth that has governed the
planet’s climate for the past 10,000 years.
</blockquote>
On April 28, 1975, Newsweek wrote an article stating:

<blockquote>Climatologists are pessimistic that political leaders
will take any positive action to compensate for the climatic change, or
even to allay its effects. They concede that some of the more
spectacular solutions proposed, such as melting the Arctic ice cap by
covering it with black soot or diverting arctic rivers, might create
problems far greater than those they solve. But the scientists see few
signs that government leaders anywhere are even prepared to take the
simple measures of stockpiling food or of introducing the variables of
climatic uncertainty into economic projections of future food supplies.
The longer the planners delay, the more difficult will they find it to
cope with climatic change once the results become grim reality.
</blockquote>
Here is a reprint of the article in the Washington Times, and here is a copy of the 1975 Newsweek article.

Newsweek discussed its 1975 article in 2006:

<blockquote>In April, 1975 … NEWSWEEK published a small back-page
article about a very different kind of disaster. Citing “ominous signs
that the earth’s weather patterns have begun to change dramatically,”
the magazine warned of an impending “drastic decline in food
production.” Political disruptions stemming from food shortages could
affect “just about every nation on earth.” Scientists urged governments
to consider emergency action to head off the terrible threat of . . .
well, if you had been following the climate-change debates at the time,
you’d have known that the threat was: global cooling…

Citizens can judge for themselves what constitutes a prudent
response-which, indeed, is what occurred 30 years ago. All in all, it’s
probably just as well that society elected not to follow one of the
possible solutions mentioned in the NEWSWEEK article: to pour soot over
the Arctic ice cap, to help it melt.
</blockquote>
New York Times science columnist John Tierney noted in 2009:

<blockquote>In 1971, long before Dr. Holdren came President Obama’s
science adviser, in an essay [titled] “Overpopulation and the Potential
for Ecocide,” Dr. Holdren and his co-author, the ecologist Paul Ehrlich,
warned of a coming ice age.

They certainly weren’t the only scientists in the 1970s to warn of a
coming ice age, but I can’t think of any others who were so creative in
their catastrophizing. Although they noted that the greenhouse effect
from rising emissions of carbon dioxide emissions could cause future
warming of the planet, they concluded from the mid-century cooling trend
that the consequences of human activities (like industrial soot, dust
from farms, jet exhaust, urbanization and deforestation) were more
likely to first cause an ice age. Dr. Holdren and Dr. Ehrlich wrote:

<blockquote>The effects of a new ice age on agriculture and the
supportability of large human populations scarcely need elaboration
here. Even more dramatic results are possible, however; for instance, a
sudden outward slumping in the Antarctic ice cap, induced by added
weight, could generate a tidal wave of proportions unprecedented in
recorded history.
</blockquote>
</blockquote>
A May 21, 1975 article in the New York Times again stated:

<blockquote>Sooner or later a major cooling of the climate is widely considered inevitable.
</blockquote>
The American Institute of Physics – the organization mentioned in the Boston Globe article – notes:

<blockquote>For a few years in the early 1970s, new evidence and
arguments led many scientists to suspect that the greatest climate risk
was not warming, but cooling. A new ice age seemed to be approaching as
part of the natural glacial cycle, perhaps hastened by human pollution
that blocked sunlight. Technological optimists suggested ways to counter
this threat too. We might spread soot from cargo aircraft to darken the
Arctic snows, or even shatter the Arctic ice pack with “clean” thermonuclear explosions.

***

The bitter fighting among communities over cloud-seeding would be as
nothing compared with conflicts over attempts to engineer global
climate. Moreover, as Budyko and Western scientists alike warned,
scientists could not predict the consequences of such engineering
efforts. We might forestall global warming only to find we had triggered
a new ice age.
</blockquote>
A 1994 Time article entitled “The Ice Age Cometh?” stated:

<blockquote>What ever happened to global warming? Scientists have
issued apocalyptic warnings for years, claiming that gases from cars,
power plants and factories are creating a greenhouse effect that will
boost the temperature dangerously over the next 75 years or so. But if
last week is any indication of winters to come, it might be more to the
point to start worrying about the next Ice Age instead. After all,
human-induced warming is still largely theoretical, while ice ages are
an established part of the planet’s history. The last one ended about
10,000 years ago; the next one — for there will be a next one — could
start tens of thousands of years from now. Or tens of years. Or it may
have already started.
</blockquote>
The Register reported last year:

<blockquote>What may be the science story of the century is breaking
this evening, as heavyweight US solar physicists announce that the Sun
appears to be headed into a lengthy spell of low activity, which could
mean that the Earth – far from facing a global warming problem – is
actually headed into a mini Ice Age.



***

The announcement made on 14 June (18:00 UK time) comes from
scientists at the US National Solar Observatory (NSO) and US Air Force
Research Laboratory. Three different analyses of the Sun’s recent
behaviour all indicate that a period of unusually low solar activity may
be about to begin.

***

This could have major implications for the Earth’s climate. According to a statement issued by the NSO, announcing the research:

<blockquote>An immediate question is whether this slowdown presages a
second Maunder Minimum, a 70-year period with virtually no sunspots
[which occurred] during 1645-1715.
</blockquote>
As NASA notes:

<blockquote>Early records of sunspots indicate that the Sun went
through a period of inactivity in the late 17th century. Very few
sunspots were seen on the Sun from about 1645 to 1715. Although the
observations were not as extensive as in later years, the Sun was in
fact well observed during this time and this lack of sunspots is well
documented. This period of solar inactivity also corresponds to a
climatic period called the “Little Ice Age” when rivers that are
normally ice-free froze and snow fields remained year-round at lower
altitudes. There is evidence that the Sun has had similar periods of
inactivity in the more distant past.
</blockquote>
During the Maunder Minimum and for periods either side of it, many
European rivers which are ice-free today – including the Thames –
routinely froze over, allowing ice skating and even for armies to march
across them in some cases.

“This is highly unusual and unexpected,” says Dr Frank Hill of the
NSO. “But the fact that three completely different views of the Sun
point in the same direction is a powerful indicator that the sunspot
cycle may be going into hibernation.”

***

According to the NSO:

<blockquote>Penn and Livingston observed that the average field
strength declined about 50 gauss per year during Cycle 23 and now in
Cycle 24. They also observed that spot temperatures have risen exactly
as expected for such changes in the magnetic field. If the trend
continues, the field strength will drop below the 1,500 gauss threshold
and spots will largely disappear as the magnetic field is no longer
strong enough to overcome convective forces on the solar surface.
</blockquote>
In parallel with this comes research from the US Air Force’s studies of the solar corona.

***

“Cycle 24 started out late and slow and may not be strong enough to
create a rush to the poles, indicating we’ll see a very weak solar
maximum in 2013, if at all. If the rush to the poles fails to complete,
this creates a tremendous dilemma for the theorists … No one knows what
the Sun will do in that case.”

According to the collective wisdom of the NSO, another Maunder Minimum may very well be on the cards.

“If we are right,” summarises Hill, “this could be the last solar
maximum we’ll see for a few decades. That would affect everything from
space exploration to Earth’s climate.”

***

The big consequences of a major solar calm spell, however, would be
climatic. The next few generations of humanity might not find themselves
trying to cope with global warming but rather with a significant
cooling. This could overturn decades of received wisdom on such things
as CO2 emissions, and lead to radical shifts in government policy
worldwide.
</blockquote>
And Agence France-Presse reports:

<blockquote>For years, scientists have been predicting the Sun would
by around 2012 move into solar maximum, a period of intense flares and
sunspot activity, but lately a curious calm has suggested quite the
opposite.

According to three studies released in the United States on Tuesday,
experts believe the familiar sunspot cycle may be shutting down and
heading toward a pattern of inactivity unseen since the 17th century.

The signs include a missing jet stream, fading spots, and slower
activity near the poles, said experts from the National Solar
Observatory and Air Force Research Laboratory.

“This is highly unusual and unexpected,” said Frank Hill, associate
director of the NSO’s Solar Synoptic Network, as the findings of the
three studies were presented at the annual meeting of the American
Astronomical Society’s Solar Physics Division in Las Cruces, New Mexico.

“But the fact that three completely different views of the Sun point
in the same direction is a powerful indicator that the sunspot cycle may
be going into hibernation.”

Solar activity tends to rise and fall every 11 years or so. The solar
maximum and solar minimum each mark about half the interval of the
magnetic pole reversal on the Sun, which happens every 22 years.

Hill said the current cycle, number 24, “may be the last normal one
for some time and the next one, cycle 25, may not happen for some time.

“This is important because the solar cycle causes space weather which
affects modern technology and may contribute to climate change,” he
told reporters.

Experts are now probing whether this period of inactivity could be a
second Maunder Minimum, which was a 70-year period when hardly any
sunspots were observed between 1645-1715, a period known as the “Little
Ice Age.”

“If we are right, this could be the last solar maximum we’ll see for a
few decades. That would affect everything from space exploration to
Earth’s climate,” said Hill.
</blockquote>
And the Wall Street Journal wrote in January:

<blockquote>The entire 10,000-year history of civilization has
happened in an unusually warm interlude in the Earth’s recent history.
Over the past million years, it has been as warm as this or warmer for
less than 10% of the time, during 11 brief episodes known as
interglacial periods. [In other words, the Earth is in an ice age most of the time,
and that the warmer "interglacial" periods are rare.] One theory holds
that agriculture and dense settlement were impossible in the volatile,
generally dry and carbon-dioxide-starved climates of the ice age, when
crop plants would have grown more slowly and unpredictably even in
warmer regions.

This warm spell is already 11,600 years old, and it must surely, in
the normal course of things, come to an end. In the early 1970s, after
two decades of slight cooling, many scientists were convinced that the
moment was at hand. They were “increasingly apprehensive, for the
weather aberrations they are studying may be the harbinger of another
ice age,” said Time in 1974. The “almost unanimous” view of
meteorologists was that the cooling trend would “reduce agricultural
productivity for the rest of the century,” and “the resulting famines
could be catastrophic,” said Newsweek in 1975.

Since then, of course, warmth has returned, probably driven at least
partly by man-made carbon-dioxide emissions. A new paper, from
universities in Cambridge, London and Florida, drew headlines last week
for arguing that these emissions may avert the return of the ice age.
Less noticed was the fact that the authors, by analogy with a previous
warm spell 780,000 years ago that’s a “dead ringer” for our own, expect
the next ice age to start “within about 1,500 years.” Hardly the day
after tomorrow.

Still, it’s striking that most interglacials begin with an abrupt
warming, peak sharply, then begin a gradual descent into cooler
conditions before plunging rather more rapidly toward the freezer. The
last interglacial—which occurred 135,000 to 115,000 years ago (named the
Eemian period after a Dutch river near which the fossils of
warmth-loving shell creatures of that age were found)—saw temperatures
slide erratically downward by about two degrees Celsius between 127,000
and 120,000 years ago, before a sharper fall began.

Cyclical changes in the earth’s orbit probably weakened sunlight in
the northern hemisphere summer and thus caused this slow cooling. Since
the northern hemisphere is mostly land, this change in the sun’s
strength meant gradually increased snow and ice cover, which in turn
reflected light back into space. This would have further cooled the air
and, gradually, the ocean too. Carbon-dioxide levels did not begin to
fall much until about 112,000 years ago, as the cooling sea absorbed
more of the gas.

Our current interglacial shows a similar pattern. Greenland ice cores
and other proxy records show that temperatures peaked around 7,000
years ago, when the Arctic Ocean was several degrees warmer than today,
trees grew farther north in Siberia and the Sahara was wet enough for
hippos (Africa generally gets wetter in warm times). Data from the
southern hemisphere reveal that this “Holocene Optimum” was global in
extent.

An erratic decline in temperature followed, with Minoan, Roman and
Medieval warm periods peaking at successively lower temperatures,
culminating in the exceptionally cool centuries of the “Little Ice Age”
between 1550 and 1850, when glaciers advanced all over the world. In the
Greenland ice cores, these centuries stand out as the longest and most
consistent cold spell of the current interglacial.

In other words, our own interglacial period has followed previous
ones in having an abrupt beginning and a sharp peak, followed by slow
cooling. The question is whether recent warming is a temporary blip
before the expected drift into glacial conditions, or whether
humankind’s impact on the atmosphere has now reversed the cooling trend.


Source:-


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