Questions tagged [arctic]
For questions pertaining to land and waters above 60 degrees North.
23
questions
4
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0answers
78 views
Dynamic of glacier retreat? (here: in Greenland)
During the last years I have taken many pictures of obviously retreating glaciers and empty moraines in Greenland - just like this one. Looks devastating, actually.
In my understanding, the current ...
0
votes
0answers
40 views
Are events like the Siberian heat wave factored into models of sea ice decline?
I've been looking at a lot of charts of Arctic Sea Ice lately, wondering when it will be gone, and whether the more extreme predictions are credible.
When scientists come up with a chart that points ...
0
votes
1answer
89 views
Is Alert (in Canada) a harbor/port? [closed]
Alert, in Qikiqtaaluk Region, Nunavut, Canada, is northernmost permanently inhabited place in world.
The site was first visited by Sir George Nares, who commanded HMS Alert in 1875-76, the first ...
27
votes
3answers
9k views
Antarctic and arctic meltwater is “bad” because it's dark, but why is transparent liquid on white stuff so dark?
The Washington Post's Antarctic heat wave melted 20 percent of an island’s snow cover in days, caused melt ponds to proliferate includes the figure below of meltwater ponds on top of snow/ice.
The ...
5
votes
2answers
207 views
Is the Arctic sea ice disappearing in a linear or non-linear way?
I'd like help to understand these charts. They are charts of Sea Ice Volume. One is drawn with linear decline, the other has all sorts of curves fitted onto it.
Why do we have these different line ...
5
votes
1answer
110 views
What is the chasm in the Arctic on Google satellite map?
In the image below, taken from Google Maps satellite view, between Svalbard and Greenland there is what looks like a massive crevasse, chasm, crack, &c.
What is it? Should I be worried?
1
vote
0answers
27 views
less albedo feedback under high (BAU) emissions?
i've recently read Climate policy implications of nonlinear decline of Arctic land permafrost and other cryosphere elements
https://www.nature.com/articles/s41467-019-09863-x
the study estimates the ...
4
votes
1answer
57 views
Is the Arctic already ice-free during summer?
Not an expert in this field but I'm just curious as to how accurate the Google Map is here
Also, from the interview with scientist Peter Wadhams, his estimate seems to be spot-on.
I still remember, ...
6
votes
2answers
343 views
What is the relevance of Arctic coastal erosion to the Earth's climate?
Due to global warming and Arctic amplification, Northern Hemispheric permafrost is thawing and becoming a source of carbon and many greenhouse gases, which then positively feedback to global warming ...
3
votes
1answer
90 views
Simple way to understand these narrow frequency peaks in recently published “ice shelf singing”?
The Earther.Gizmodo.com article Scientists Discover a Weird Noise Coming From Antarctic Ice Shelf links to the American Geophysical Union video (an more importantly audio) (AGU) This is what an ...
9
votes
1answer
92 views
How much of arctic ice is from snow fall versus frozen sea water?
How much of arctic ice is from snow fall versus frozen sea water? I presume arctic ice comes from both sources.
Is there a way to tell how the ice was formed? In other words, if you made a core ...
8
votes
1answer
127 views
Is the Arctic ice dissapearing faster than IPCC models say?
Are observations of Arctic sea ice in accord with what the IPCC forecasts says they should be? And as such is the ice reducing in an exponential or linear way?
For instance, from https://www....
10
votes
2answers
954 views
Can the Bering Sea Rule be used to predict the weather?
Recently, a colleague explained that the recent cold spell in the eastern United States could have been predicted using the Bering Sea Rule. The idea is that 17-21 days after a storm appears in the ...
9
votes
2answers
993 views
Will global warming lead to agriculture in the Arctic?
From what I understand, global warming will make growing food a lot harder in areas like the American Midwest because temperatures will become too high for most crops. At the same time, Arctic (and ...
3
votes
2answers
178 views
Implications of recent 36 degrees Fahrenheit (20C) anomaly at North Pole?
This extreme difference from normal -- could it occur in climates that are warmer, making some places unlivable?
Additionally, is there a reason why extremely cold places should expect to have ...
4
votes
0answers
471 views
Does the Labrador current affect North Atlantic climate?
This summer has seen very low sea surface temperature anomalies in the North Atlantic.
Using animations of these over the last year I feel the runoff of freshwater from Hudson Bay, into the Labrador ...
6
votes
2answers
85 views
Observations of sea ice typology in the Arctic
What are the main datasets characterizing sea ice typology, thickness, density, "passability", presence of pressure ridges in the Arctic?
Is it something that can be detected from the air or a space ...
4
votes
0answers
56 views
Weekly atmospheric or oceanic oscillation within Arctic region
I'm in the middle of writing my Master's thesis. I've analyzed Ocean Bottom Pressure (OBP) signals derived from observations by the GRACE satellites.These observations are able to reproduce sub-...
2
votes
0answers
34 views
What are the impacts of pollutants from North America and elsewhere on Arctic wildlife?
What are the impacts of pollutants from North America and elsewhere on Arctic wildlife?
6
votes
1answer
217 views
What is the mechanism for deep-sea volcanism of the Gakkel Ridge in the Arctic?
Related to an earlier question, What is the geochemical source for the helium detected in deep Arctic explosive eruptions?, where it is stated in the linked article that there is evidence of explosive ...
11
votes
1answer
120 views
Why is there a bend in the Lomonosov Ridge?
Why is there a bend in the Lomonosov Ridge?
This is a supplementary question to that asked by Sabre Tooth in What is the tectonic explanation for parallel ridges in the Arctic ocean
5
votes
1answer
437 views
What is the tectonic explanation for parallel ridges in the Arctic Ocean?
Looking at a map of the underwater features of the Arctic Ocean reveals three roughly parallel ridges, separated by basins (see image below):
Image source
The three ridges, as labelled are the Alpha ...
7
votes
1answer
100 views
What is the geochemical source for the helium detected in deep Arctic explosive eruptions?
Recently, there has been explosive deep-ocean volcanism detected along the slowly-spreading Gakkel Ridge in the Arctic Ocean (see map below), according the National Geographic news article Arctic ...
