Glacier Retreat

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Glacier Retreat

Postby MilesAway » 25 Dec 2017, 15:44

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Re: Glacier Retreat

Postby HBS Guy » 25 Dec 2017, 15:51

No no we are in an ice age! Booby said so and he got it from an oil seed broker! Impeccable sources!

When Pine Island glacier lets go and Thwaites glacier with it followed shortly by the whole West Antarctic icesheet Booby will still be crapping on about “ice age.”
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Re: Glacier Retreat

Postby HBS Guy » 25 Jan 2018, 10:05

The above post and Barnacle on OzPol have shown glaciers are in general retreat around the world. This has a consequence in terms of meltwater run off on which many communities depend:

Greenland and Antarctica house the world's largest ice sheets, but ice can be found in high-altitude locations around the world, from Asia to Europe to South America. These mountain glaciers are important resources for human settlements. Glacial runoff, especially during the spring and summer, can provide a critical source of fresh water downstream.

But in a new modeling study of 56 glacier drainage basins worldwide, roughly half the studied sites have already reached a kind of tipping point—after which the amount of fresh water that runs off each year begins to decline.

"As glaciers recede, water is released from long-term glacial storage," the researchers note in the paper, which was published yesterday in the journal Nature Climate Change. "Thus, annual glacier runoff volume typically increases until a maximum is reached, often referred to as 'peak water.'" After this point is reached, they note, the amount of annual runoff begins to decline again.

Runoff during the warmest part of the year experiences the sharpest declines, the scientists add, which could threaten the seasonal availability of fresh water. The new study suggests that by the end of the century, about a third of all the drainage basins could experience reductions in runoff greater than 10 percent during at least one month of the warm season.


https://www.scientificamerican.com/article/shrinking-mountain-glaciers-are-affecting-people-downstream/

Summer meltwater not decline not just from the retreat of glaciers

The research compounds ongoing concerns about water resources in warming mountain environments—not only those fed by glaciers, but also resources dependent on melting snow. Studies suggest that snowpack in mountain regions around the world may be declining annually or melting earlier in the season, allowing for less freshwater runoff later in the summer.

Another recent study, for instance—just out last week in Science Advances — documented a general decline in snow water resources across High Mountain Asia, a region spanning from the Hindu Kush region to the Himalayas.


Some mountain areas should get more meltwater from snowpack because the increasing moisture in the air creates more precipitation. Generally tho—snow and ice are in retreat.
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Re: Glacier Retreat

Postby HBS Guy » 30 Jan 2018, 11:56

As ice patches melt away in Norway as a result of climate change, once-hidden treasures are coming into view, particularly ancient reindeer hunters' tools and belongings. But once these objects are exposed to the elements, they decay, sending archaeologists scurrying through the country's mountainous regions to collect the ancient tools before they disappear.


https://www.livescience.com/61547-reindeer-hunter-artifacts.html
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