A change is allegedly as good as a rest, so here’s an alternative view of high resolution AMSR2 area and extent created using the experimental tools provided by the AWI’s Lars Kaleschke at: https://sites.google.com/view/sea-ice/
After a brief pause mid-month the refreeze has accelerated again. Both metrics are in the upper half of the decadal range, with extent this year just above 2021 and area just below last year.
Next let’s take a look at sea ice concentration at the end of October:
Recently Judith Curry published a series of articles on the topic of blackouts. Since attempting to prevent such things is my “professional” speciality I’ve spent a bit of time over at “Climate Etc.” recently. Hence I couldn’t help but notice Judith’s article on Tim Palmer‘s new book, entitled “The Primacy of Doubt”. According to Judith:
The 2022/23 freezing season has begun, so to begin with here are Arctic sea ice area and extent during its early stages:
Both metrics are currently tracking 2021 quite closely.
Here too is an AMSR2 animation of the transition from melting to freezing in the Central Arctic. Click to animate, and be warned that the file size is almost 10 Mb:
Another big storm is heading for the Chukchi Sea. The GFS forecast currently shows a sub 960 hPa low developing on Thursday:
As in previous years there is already a thread devoted to this year’s minimum extent. By way of a summary here are the end of August numbers for our favourite “high resolution” AMSR2 area and extent metrics:
Extent is currently near the top of the range of the last 10 years.
We have now reached the stage of the “melting season” when “refreezing” has started in the Central Arctic but melting at the periphery is outpacing it. However the Canadian Ice Service stage of development charts now show the arrival of new ice in the high latitudes of the Canadian Arctic Archipelago:
We’ll start the new month in traditional fashion. Here’s the high resolution AMSR2 sea ice extent and area:
Extent decline in July proved to be somewhat sluggish by recent standards. A week ago I posed the question:
Is 2022 more likely to follow the path of 2012, 2013 or 2016 to this year’s minimum?
At the moment the answer seems to be “2013 Jim!”. However what about the condition of all that ice? Here’s the latest AMSR2 concentration map:
After a long hiatus courtesy of the demise of the annual Barneo ice camp and the Covid-19 pandemic we are pleased to be able to report that an ice mass balance buoy has once again been installed on a floe in the vicinity of the North Pole. Here’s the evidence:
The ship in the background is not a traditional research icebreaker. It is Ponant Cruises’ Le Commandant Charcot, one of a number of new ice hardened cruise ships voyaging across the Arctic Ocean and adjacent seas. Le Commandant Charcot reached 90N on July 13th:
In a press release last week the Alfred Wegener Institute announced that:
From her home port in Bremerhaven, the Polarstern will set course for Fram Strait and the marginal ice zone north of Svalbard, where warm, nutrient-rich Atlantic Water flows into the Arctic Ocean.
After a relatively rapid decline at the beginning of June Arctic sea extent is now very close to the 2010s average:
Both 2020 and 2021 began relatively rapid declines of their own at the beginning of July, so it will be interesting to see if 2022 follows suit.
Most of the fast ice off Utqiaġvik has recently disappeared:
Meanwhile further out into the Chukchi Sea the sea ice looks to be in poor shape at the moment, with surface melting apparent across the entire region:
On June 17th the Northern Sea Route Administration published the Arctic and Antarctic Research Institute forecast of ice conditions for June to August 2022. Here’s the summary:
“Favorable” conditions in most areas, but “average” in the eastern East Siberian Sea and south west Chukchi Sea.
Traffic along the main Northern Sea Route has already begun. Marine Traffic reveals that the liquified natural gas carrier Nikolay Yevgenov is heading for the Bering Strait and has already sailed north of the New Siberian Islands. He is now entering the “average” ice area in the eastern ESS:
Meanwhile the recently commissioned nuclear powered icebreaker Sibir is patiently waiting in the Vilkitsky Strait:
The Northern Sea Route is evidently already “open” for ice hardened LNG tankers, but not yet for more conventional vessels. Here is the current AMSR2 sea ice concentration map:
May 2022 proved to be fairly uneventful in the Arctic. High resolution AMSR2 Arctic sea ice extent has remained towards the top of the recent pack:
However Arctic sea ice area has been declining more quickly recently, and compaction is now lowest for the date in the AMSR2 record: