The website for Gary Braasch's book, co-authored with Lynne Cherry.
Polar Thaw Climate ExhibitLast Updated on 2008-10-06 00:00:00
"Polar Thaw," a 30-print exhibit of photographs from locations of Arctic and Antarctic climate warming, opened spring 2000 at the American Association for the Advancement of Science, Washington DC. It has also been exhibited at the Science Museum of Minnesota, and was at the Field Museum of Natural History in Chicago during fall 2003.
This exhibit, with detailed, informative captions, is available for display in museums, science centers, public libraries, and other funded venues. For more information, see the "Polar Thaw" information page or visit
National Science Foundation icebreaker Nathaniel B. Palmer cruises at dusk in the Antarctic Peninsula, on a study of disintegrating ice shelves. Print from "Polar Thaw" exhibit (see... More »
Antarctica: Ice Under FireLast Updated on 2008-10-04 00:00:00
Antarctica: Ice Under Fire
The disintegrating face of the Müller Ice Shelf, Lallemand Fjord, Antarctic Peninsula, 67° South, April 2, 1999. This small shelf, fed by glaciers from the Loubet Coast, has been receding recently after growing over a 400-year cooling period. Like other receding ice shelves such as the larger Larsen, it may be a sensitive monitor of rising regional temperatures. The Larsen Ice Shelf lost a 1200 square mile section early in 2002. Earlier in the 1990's other huge sections of this shelf disintegrated. In 2003 Argentine glaciologists reported that the land-based glaciers exposed by the removal of those sections had surged rapidly into the ocean. Thus, although ice shelves are floating and do not add to sea level when they melt or break up, land based glaciers released by such events definitely will add to sea... More »
Antarctica: Pushing the Boundaries of Life Last Updated on 2008-10-04 00:00:00
A colony of Adelies on Humble Island, one of eight islets off Anvers Island where thousands of Adelies have nested for some 600 years. Over the last 25 years these Adelie colonies have declined sharply. Chinstrap penguins are moving rapidly into Adelie territory. Archaeological digs in penguin colonies indicate there probably were no chinstraps in this area until about 50 years ago, when average temperatures began to rise.
Ornithologist Bill Fraser stands on the smooth pebbly surface of a former large colony of Adelie penguins on Torgersen Island. Unlike the colony in the photo above, this nesting site has been used by fewer and fewer penguins over recent years. Analyzing climate data, island topography, and breeding statistics, Fraser... More »
Glaciers and Glacial Warming: AntarcticaLast Updated on 2008-10-04 00:00:00 Ice Under Fire: Antarctica
The disintegrating face of the Müller Ice Shelf, Lallemand Fjord, Antarctic Peninsula, 67° South, April 2, 1999.
This small shelf, fed by glaciers from the Loubet Coast, has been receding recently after growing over a 400-year cooling period. Like other receding ice shelves such as the larger Larsen, it may be a sensitive monitor of rising regional temperatures. The Larsen Ice Shelf lost a 1200 square mile section early in 2002, prompting some glaciologists to be concerned that even the giant Ross Ice Shelf could be at risk.
This mile-long ice cliff of Marr Ice Piedmont, Anvers Island, has receded about 500 meters since the mid 1960s. The cliff's previous position was to the left of the line of ice floating in the harbor and... More »
Glaciers and Glacial Warming: Mountain GlaciersLast Updated on 2008-10-04 00:00:00Ice Under Fire: Mountain Glaciers
Photographer Gary Braasch holding a 1932 photo of Broggi glacier near Huascaran in the Peruvian Andes, while rephotographing this receding glacier in 1999.
Glaciers everywhere in the world (with a very few exceptions) have been shrinking throughout the 20th Century, a prime signal of rapid global warming. Loss of tropical glaciers is particularly rapid. This glacier, previously photographed by the Austrian Hans Kinzl, receded about one kilometer in 67 years.
Here is a series of other receding glaciers in "then and now" views (move cursor over old image to see current glacier position).
Glacier Ururashraju, at about 15,000 feet in Cordillera Blanca of Peru. Photographed in 1986 by Peruvian glaciologist Alcides Ames, whose studies and direction allowed Gary Braasch to rephotograph it in 1999. Retreat of about... More »
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