Retreat of glaciers since 1850

Shortening of glaciers by melting "Glacier retreat" redirects here. For other uses, see Glacier retreat (disambiguation). Retreat of White Chuck Glacier, WashingtonWhite Chuck Glacier in 1973Same vantage point in 2006. The glacier retreated 1.9 kilometres (1.2:mi) in 33 years. Play media In all, about 25 percent of the ice that melted between 2003 and 2010 occurred in the Americas (excluding Greenland).

The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and, in the longer term, the level of the oceans. Studied by glaciologists, the temporal coincidence of glacier retreat with the measured increase of atmospheric greenhouse gases is often cited as an evidentiary underpinning of global warming. Mid-latitude mountain ranges such as the Himalayas, Rockies, Alps, Cascades, and the southern Andes, as well as isolated tropical summits such as Mount Kilimanjaro in Africa, are showing some of the largest proportionate glacial losses.

Glacier mass balance is the key determinant of the health of a glacier. If the amount of frozen precipitation in the accumulation zone exceeds the quantity of glacial ice lost due to melting or in the ablation zone a glacier will advance; if the accumulation is less than the ablation, the glacier will retreat. Glaciers in retreat will have negative mass balances, and if they do not find an equilibrium between accumulation and ablation, will eventually disappear.

The Little Ice Age was a period from about 1550 to 1850 when certain regions experienced relatively cooler temperatures compared to the time before and after. Subsequently, until about 1940, glaciers around the world retreated as the climate warmed substantially. Glacial retreat slowed and even reversed temporarily, in many cases, between 1950 and 1980 as global temperatures cooled slightly. Since 1980, climate change has led to glacier retreat becoming increasingly rapid and ubiquitous, so much so that some glaciers have disappeared altogether, and the existence of many of the remaining glaciers is threatened. In locations such as the Andes and Himalayas, the demise of glaciers has the potential to affect water supplies.

The retreat of mountain glaciers, notably in western North America, Asia, the Alps and tropical and subtropical regions of South America, Africa and Indonesia, provide evidence for the rise in global... ...read more

List of glaciers
6 months ago

List of glaciers ... 5 km (37.6 mi) Batura Glacier, Pakistan – 57 km (35 mi) Cryoseism Glacier growing Ice dam Retreat of glaciers since 1850 Rock glacier Sag (geology) "Mapping...

Glacier retreat (disambiguation)
4 months ago

Glacier retreat (disambiguation) ... Glacier retreat primarily refers to the retreat of glaciers since 1850. It may also refer to: Glacial retreat, a type of glacial motion Deglaciation, the...

Ice melting
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Ice melting ... Ice melting may refer to: Ice melt Retreat of glaciers since 1850 Arctic sea ice decline This disambiguation page lists articles associated with the title...

Glaciers of New Zealand
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Rebmann Glacier
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Rhône Glacier
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Rhône Glacier ... List of glaciers in Switzerland List of glaciers Retreat of glaciers since 1850 Swiss Alps Mallonee, Laura. "Switzerland Tries to Save a Glacier... by...

Heard Island and McDonald Islands
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Wheeler Peak Glacier
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Wheeler Peak Glacier ... widespread melting of both continental glaciers and other alpine glaciers. Specifically, there has been a global retreat of glaciers since 1850. Given current...

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Barranco Glacier
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