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Author Topic: Ellesmere Island glaciers disappearing  (Read 1075 times)

ael

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Ellesmere Island glaciers disappearing
« on: July 18, 2018, 07:02:19 PM »
Hundreds of glaciers in Canada’s high Arctic are shrinking and many are at risk of disappearing completely, an unprecedented inventory of glaciers in the country’s northernmost island has revealed.

Using satellite imagery, researchers catalogued more than 1,700 glaciers in northern Ellesmere Island and traced how they had changed between 1999 and 2015.

https://www.theguardian.com/world/2018/jul/18/canadas-high-arctic-glaciers-at-risk-of-disappearing-completely-study-finds

Link to the study itself: https://www.cambridge.org/core/journals/journal-of-glaciology/article/area-change-of-glaciers-across-northern-ellesmere-island-nunavut-between-1999-and-2015/597055ECFD496885D0CF0CB8C9528E8E

jacksmith4tx

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Re: Ellesmere Island glaciers disappearing
« Reply #1 on: July 18, 2018, 07:23:00 PM »
First order forcing: GHG

Second order forcing: Change in temperatures and chemistry

Third order forcing: Biosphere response.
https://www.nature.com/articles/s41598-018-27705-6
"Need for focus on microbial species following ice melt and changing freshwater regimes in a Janus Arctic Gateway"
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Abstract

Oceanic gateways are sensitive to climate driven processes. By connecting oceans, they have a global influence on marine biological production and biogeochemical cycles. The furthest north of these gateways is Nares Strait at the top of the North Water between Greenland and Ellesmere Island (Canada). This gateway is globally beneficial, first by supporting high local mammal and bird populations and second with the outflow of phosphate-rich Arctic waters fueling the North Atlantic spring bloom. Both sides of the North Water are hydrologically distinct with counter currents that make this Arctic portal a Janus gateway, after Janus, the Roman god of duality. We examined oceanographic properties and differences in phytoplankton and other protist communities from the eastern and western sides of the North Water (latitude 76.5°N) and found that species differed markedly due to salinity stratification regimes and local hydrography. Typical Arctic communities were associated with south flowing currents along the Canadian side, while potentially noxious Pseudo-nitzschia spp. were dominant on the Greenland side and associated with greater surface freshening from ice melt. This susceptibility of the Greenland side to Pseudo-nitzschia spp. blooms suggest that monitoring species responses to climate mediated changes is needed.
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Tor Bejnar

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Re: Ellesmere Island glaciers disappearing
« Reply #2 on: July 18, 2018, 09:18:37 PM »
These might properly belong in the established thread: 
Ice Shelves /Ward Hunt Ice Shelf / Ellesmere Island / Canada

Before starting a new thread, consider checking out what threads already exist by going to the "Home" tab and searching for a key word, such as "Ellesmere".  Then decide if a new thread should be created.  Some say 'yes', others say 'no', when confronted with
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Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic.
I tend to say, 'ah, a good thread to activate.' Others may respond differently, but I'd appreciate if they referenced the former thread...
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gerontocrat

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Re: Ellesmere Island glaciers disappearing
« Reply #3 on: July 18, 2018, 09:32:14 PM »
Indeed lots of choices - me I would post in the following:-

Arctic Sea Ice : Forum » Search » Search Results
 Search results for: glaciers
Pages: [1] 2 3 ... 12
1
Glaciers / Re: Glaciers worldwide decline faster than ever
« by gerontocrat on April 18, 2018, 05:21:12 PM »
......  change, threatening the already imperilled glaciers in this area   ......
2
Glaciers / Re: Alpine Glaciers
« by ReverendMilkbone on July 08, 2018, 07:48:05 PM »
......  Earth Engine images of Alps Glaciers  Pasterze Glacier  https://earthengine.google.com/ ......
3
Glaciers / Re: Alaska Glaciers
« by ReverendMilkbone on July 08, 2018, 07:40:19 PM »
......  Earth Engine shows a lot of these glaciers receding;  Mendenhall Glacier in Alaska;  https:// ......
4
Arctic background / Ellesmere Island glaciers disappearing
« by ael on Today at 07:02:19 PM »
......  of glaciers in Canada’s high Arctic are shrinking and many  ............  completely, an unprecedented inventory of glaciers in the country’s northernmost island has revealed. ............  imagery, researchers catalogued more than 1,700 glaciers in northern Ellesmere Island and traced how they  ............ .com/world/2018/jul/18/canadas-high-arctic-glaciers-at-risk-of-disappearing-completely-study-finds   ............ /journal-of-glaciology/article/area-change-of-glaciers-across-northern-ellesmere-island-nunavut-between- ......


Glaciers / Re: North Cascade glaciers Disastrous conditions
« by budmantis on June 07, 2016, 01:24:24 AM »
......  Europeans are blanketing some of their glaciers to reduce melt as well. Although I'm an American,  ......
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litesong

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Re: Ellesmere Island glaciers disappearing
« Reply #4 on: October 24, 2018, 02:43:58 AM »
Using satellite imagery, researchers catalogued more than 1,700 glaciers in northern Ellesmere Island and traced how they had changed between 1999 and 2015.
https://www.theguardian.com/world/2018/jul/18/canadas-high-arctic-glaciers-at-risk-of-disappearing-completely-study-finds]https://www.theguardian.com/world/2018/jul/18/canadas-high-arctic-glaciers-at-risk-of-disappearing-completely-study-finds
From your study:
Of the 1,773 glaciers tracked by White, 1,353 were found to have shrunk significantly. A handful had disappeared altogether: “What we found is a loss of three complete ice shelves,” she said. “In terms of glaciers that terminate on land, we’ve lost three small ice caps.”

None of the glaciers in the study showed any signs of growing.
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Any good (better description.... bad) AGW denier would say:
"B-bb-uuttt...... some glaciers are melting slower......... so that means there is no AGW."