World's Lakes Getting Hotter, More Than the Air

A first-of-its-kind NASA study is finding nice cool lakes are heating up—even faster than air

November 24, 2010 RSS Feed Print

By Seth Borenstein, Science News

WASHINGTON—A first-of-its-kind NASA study is finding nice cool lakes are heating up—even faster than air.

Two NASA scientists used satellite data to look at 104 large inland lakes around the world and found that on average they have warmed 2 degrees (1.1 degree Celsius) since 1985. That's about two-and-a-half times the increase in global temperatures in the same time period.

Russia's Lake Ladoga and America's Lake Tahoe are warming significantly and the most, said study co-author Simon Hook, a scientist at the Jet Propulsion Lab in Pasadena, Calif. Tahoe has heated up by 3 degrees (1.7 degrees Celsius) since 1985, while Ladoga has been even hotter, going up by 4 degrees (2.2 degrees Celsius).

The study was published Wednesday in the journal Geophysical Research Letters.

Hook and his colleague used several satellites and looked at thermal infrared images of the lakes in winter and summer. They also confirmed the numbers by comparing them to buoy data.

"It fits with what we see with air temperature measurements," Hook said. "We were surprised that in some places the lakes appear to be warming more than the air temperature."

The next question to look at is why the lakes seem to be warming faster than the air or land, Hook said. One reason could be the way lakes warm—in a more gradual manner than land but also slower to cool.

NASA climate scientist Gavin Schmidt, who was not part of the study, said the research made sense and adds another independent measuring system to show that the world is warming up. Eleven different indicators—including air temperature, humidity, snow cover, ocean heat content—show statistically significant man-made global warming, while no environmental measurements show otherwise, according to the National Oceanic and Atmospheric Administration.

Warming lakes is No. 12 and "another brick in the wall," said University of Victoria climate scientist Andrew Weaver.

Overall, 41 lakes increased temperatures in a statistically significant way, with another 59 individually warming but not enough to be considered significant. Only four showed temperature drops, but not significantly, Hook said.

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Tags:
water,
global warming,
energy policy and climate change,
environment

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One of your alleged "non- scientist" proponents of "Global Cooling" was Nobel Prize winning Professor Stephan Schneider (recently deceased), Professor of Environmental Biology and Global Climate Change at Stanford University. There were dozens of others who, like Schneider, initially proposed the theory of a coming Ice Age.

I note another Stanford Professor, Paul Ehrlich, predicted that civilization would come to an end in 1980 because of, "The Population Bomb". I observe that most of his subsequent predictions have also been wrong. The good Professor is a proponent of the Global Warming theory these days.

Boy, does this article in Newsweek, from 1975, sound familiar - except for cooling rather than warming angle.

"The evidence in support of global cooling 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… 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… 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."

Ken, it appears to me that you suffer from the disease of scientific myopia as well. Tragically, the only cure is a fundamental change from facile, short range, agenda driven thinking to looking at "The Big Picture" - which of course is impossible while looking through the Coke bottle glasses worn by most ideologs, such as yourself.

Ken, I want you to feel better about global warming - The people in Greenland are really looking forward to planting crops, like their Viking forefathers did, in what is now a frozen wasteland. And, you know there's more biomass in the tropics than in musk ox land. If you don't believe me you can try planting some seeds in your freezer and some in a greenhouse and seed which grow. Ah.... ain't science grand?

Now, advancing glaciers down to the 38th parallel (again) - that's a big worry! Say, that gives me an idea! Be the first on your block to switch back to fretting over"Global Cooling" The climate has always been changing - so you're bound to be right.... sometime.

R.L. Schaefer of CA 1:33PM November 26, 2010

Arrrrrrrrrgh! Once more to de-de-bunk the de-bunking--or something like that. The flap in the popular press in the mid-80s was little to do with (climate) scientists predicting from short-term data, it was about complete non-scientists getting excited about _any_ data when they severely mis-understood climate data, and/or data in general, and/or fundamental science.

Ken of GA 10:02AM November 26, 2010

I have both a, "Discover" and a, "National Geographic" magazine from the mid 1980's. Their covers proclaim the coming of a "new Ice Age", based on the then current data of for "Global Cooling".

This article is further evidence that the use of short timelines in climate study is inaccurate and misleading.

R.L. Schaefer of CA 11:32AM November 25, 2010

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