Posted on 02/16/2007 6:08:30 AM PST by Abathar
The principal glacier of the world’s biggest tropical ice-cap could disappear within five years as a result of global warming, one of the world’s leading glaciologists predicted yesterday.
The imminent demise of the Qori Kalis glacier, the main component of the Quelccaya ice cap in the Peruvian Andes, offers the starkest evidence yet of the effects of climate change, according to Lonnie Thompson, of Ohio State University.
Although scientists have known for decades that Qori Kalis and the other Quelccaya glaciers are melting, new observations indicate that the rate of retreat is increasing, Professor Thompson said. When he visits this summer, he expects to find that the glacier has halved in size since last year, and he believes that Qori Kalis will be gone within five years.
“This widespread retreat of mountain glaciers may be our clearest evidence of global warming as they integrate many climate variables,” Professor Thompson told the American Association for the Advancement of Science conference in San Francisco. “Most importantly, they have no political agenda.”
The Quelccaya ice-cap, covering 17 square miles (44 sq km) in the Cordillera Oriental region of the Peruvian Andes, is the world’s largest tropical ice mass. Qori Kalis, its biggest glacier, has receded by at least 0.6 miles (1.1km) since 1963, when the first formal measurements were made from aerial photographs. The rate of retreat has increased: between 1963 and 1978, it shrank by 6.5 yards (6m) a year, a rate that has now risen tenfold to 65 yards annually.
Professor Thompson predicted six years ago that the celebrated snows of Kilimanjaro would be gone from Africa’s highest mountain by 2015, and he now thinks that that estimate may have been too conservative. He said: “Tropical glaciers are the canaries in the coalmine for our global climate system, as they integrate and respond to most of the key climatological variables — temperature, precipitation, cloudiness, humidity and radiation.”
A critical piece of evidence from almost fifty scientific expeditions to seven shrinking tropical ice-caps points to global warming as the reason for their decline. In all but one case, snowfall has increased as ice volume has fallen. More snow should mean advancing glaciers, unless rising temperatures are melting the extra precipitation and the ice tongues themselves.
...So when this doesn't happen, and in 2012 the glacier is still there, do you think it'll be reported?
We really have no idea what it was doing before 1963 then, do we?
Here is the text of Newsweek’s 1975 story on the trend toward global cooling.
It may look foolish today, but in fact world temperatures had been falling since about 1940. It was around 1979 that they reversed direction and resumed the general rise that had begun in the 1880s, bringing us today back to around 1940 levels. A PDF of the original is available here.
A fine short history of warming and cooling scares has recently been produced. It is available here. — D.D.
There are ominous signs that the Earth’s weather patterns have begun to change dramatically and that these changes may portend a drastic decline in food production – with serious political implications for just about every nation on Earth. The drop in food output could begin quite soon, perhaps only 10 years from now. The regions destined to feel its impact are the great wheat-producing lands of Canada and the U.S.S.R. in the North, along with a number of marginally self-sufficient tropical areas – parts of India, Pakistan, Bangladesh, Indochina and Indonesia – where the growing season is dependent upon the rains brought by the monsoon.
The evidence in support of these predictions has now begun to accumulate so massively that meteorologists are hard-pressed to keep up with it. In England, farmers have seen their growing season decline by about two weeks since 1950, with a resultant overall loss in grain production estimated at up to 100,000 tons annually. During the same time, the average temperature around the equator has risen by a fraction of a degree – a fraction that in some areas can mean drought and desolation. Last April, in the most devastating outbreak of tornadoes ever recorded, 148 twisters killed more than 300 people and caused half a billion dollars’ worth of damage in 13 U.S. states.
To scientists, these seemingly disparate incidents represent the advance signs of fundamental changes in the world’s weather. The central fact is that after three quarters of a century of extraordinarily mild conditions, the earth’s climate seems to be cooling down. Meteorologists disagree about the cause and extent of the cooling trend, as well as over its specific impact on local weather conditions. But they are almost unanimous in the view that the trend will reduce agricultural productivity for the rest of the century. If the climatic change is as profound as some of the pessimists fear, the resulting famines could be catastrophic. “A major climatic change would force economic and social adjustments on a worldwide scale,” warns a recent report by the National Academy of Sciences, “because the global patterns of food production and population that have evolved are implicitly dependent on the climate of the present century.”
A survey completed last year by Dr. Murray Mitchell of the National Oceanic and Atmospheric Administration reveals a drop of half a degree in average ground temperatures in the Northern Hemisphere between 1945 and 1968. According to George Kukla of Columbia University, satellite photos indicated a sudden, large increase in Northern Hemisphere snow cover in the winter of 1971-72. And a study released last month by two NOAA scientists notes that the amount of sunshine reaching the ground in the continental U.S. diminished by 1.3% between 1964 and 1972.
To the layman, the relatively small changes in temperature and sunshine can be highly misleading. Reid Bryson of the University of Wisconsin points out that the Earth’s average temperature during the great Ice Ages was only about seven degrees lower than during its warmest eras – and that the present decline has taken the planet about a sixth of the way toward the Ice Age average. Others regard the cooling as a reversion to the “little ice age” conditions that brought bitter winters to much of Europe and northern America between 1600 and 1900 – years when the Thames used to freeze so solidly that Londoners roasted oxen on the ice and when iceboats sailed the Hudson River almost as far south as New York City.
Just what causes the onset of major and minor ice ages remains a mystery. “Our knowledge of the mechanisms of climatic change is at least as fragmentary as our data,” concedes the National Academy of Sciences report. “Not only are the basic scientific questions largely unanswered, but in many cases we do not yet know enough to pose the key questions.”
Meteorologists think that they can forecast the short-term results of the return to the norm of the last century. They begin by noting the slight drop in overall temperature that produces large numbers of pressure centers in the upper atmosphere. These break up the smooth flow of westerly winds over temperate areas. The stagnant air produced in this way causes an increase in extremes of local weather such as droughts, floods, extended dry spells, long freezes, delayed monsoons and even local temperature increases – all of which have a direct impact on food supplies.
“The world’s food-producing system,” warns Dr. James D. McQuigg of NOAA’s Center for Climatic and Environmental Assessment, “is much more sensitive to the weather variable than it was even five years ago.” Furthermore, the growth of world population and creation of new national boundaries make it impossible for starving peoples to migrate from their devastated fields, as they did during past famines.
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.
These so called scientists who harp about global warming are political scientists in drag.
They are the same ones who harped about the planet freezing, only a couple decades ago, and now that we have moved into a new sun cycle, this talk is likely to begin anew. The historical facts reflect that everyone talks about the weather, and nobody can do a thing about it. Someday, I predict that some idiot will kill us all by trying.
party=parts
I wonder if "Professor" Thompson has looked at a map? Does he realize that Kilimanjaro is on the equator? It tends to be hot there......
ping.
Good find. So back in the 1970s we combatted global cooling and won!
I don't know, but I bet it would make getting to the top of Mt. Everest a lot easier. In fact I bet the Sherpas would cheer if someone told them that they get a few more weeks of summer each year...
Wonder if Norway wants all their fjords to freeze over again with glaciers? How about you folks up around the Great Lakes... do you want then to become glaciers again?
Yep, it's why I like large cubes in my drinks instead of crushed ice! As the ice mass gets smaller, it melts faster.
UHhhh its a GLACIER in a TROPICAL CLIMATE>.. did you really think it wasn't going to melt? Glaciers expand and contract ALL THE TIME... its been 10,000+ years since the last ice age, why would anyone expect a glacier in a tropical area, even at the top of a mountain, not to melt away?
Can you imagine if the governments did take the Global Cooling experts advice back in the 1970's and started stockpiling food. What a waste that would of been. Because today according to their predictions we should be starving yet we are instead obesity is one of the worlds biggest health problems.
Doesn't take a rocket scientist to figure out that a glacier doesn't stand an ice cube's chance in hell if it's located in a tropical zone...
Gregory Peck
Susan Hayward
and Ava Gardner
.. Good .. I always hated that f&%%ing glacier anyway.
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