Support the Arctic Sea Ice Forum and Blog

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - VeganPeaceForAll

Pages: [1]
1
Arctic sea ice / Re: The 2020 melting season
« on: September 03, 2020, 12:18:24 AM »
September 1 is one of the year-to-year comparison dates for the U Bremen ASI (from AMSR2) false colour concentration maps, see attached figure. Shown are this year, in the lower right corner, and seven of the previous low years. The other 8 recent years can be seen by clicking the link.

This year, the ice is unusually compact for the date.

When you say it is compact, have you taken all the clouds into account? Lots of cloud cover would give a false impression that the ice is compact, as it would show up with a dark purple colour.

2
Arctic sea ice / Re: The 2020 melting season
« on: July 20, 2020, 12:30:31 AM »
Regarding the heatwave over Siberia which is has having a big impact on the melt season:

The results showed with high confidence that the January to June 2020 prolonged heat was made at least 600 times more likely as a result of human-induced climate change.
We note that even with climate change, the prolonged heat was a very rare event expected to occur less than once every 130 years.
The results for the town of Verkhoyansk show that the record breaking June temperatures were also made much more likely (upwards of many thousands of times), though there is less confidence in this result.
Combining the values from the models and weather observations shows that for the large region the same six-months hot spell would have been at least 2 degrees Celsius cooler had it occurred in 1900 instead of 2020. For Verkhoyansk, maximum June temperatures increased due to climate change by at least 1 degree compared to 1900.

https://www.worldweatherattribution.org/siberian-heatwave-of-2020-almost-impossible-without-climate-change/?fbclid=IwAR07PNoPsnmaoygihf5FXFuynKpuMvPeknq9Z1MhBnNl85k5SHwjI9IjII0

3
Arctic sea ice / Re: The 2020 melting season
« on: July 09, 2020, 10:53:11 PM »
While extent continues to drop, area has actually stalled for the last 4 days. More draining melt ponds?

The JAXA AMSR2 melt graphics also show a reduction in surface melting in the last few days.  I guess the lack of warm air advection from lower latitudes is playing a role.




The sea ice concentration in the CAB on that picture dated 4/7 is so low because of melt ponding.. So when melt ponds drains, like Blumenkraft above showed they did on satellite pictures, naturally the concentration will be much higher.
I don't think this implies that there is significantly less surface ice melting..

4
Arctic sea ice / Re: The 2020 melting season
« on: June 09, 2020, 08:59:38 PM »
Almost all of the Arctic basin now is above its freezing temperature (-1.8) for the Average Daytime Air Temperature. Everything outside blue lines on picture is above 0 degrees. Almost all area covered by light-green blue colour (excluding area closest to Greenland) on Pacific side of Arctic is -1.66 degrees or higher temperature.

Picture from NASA Eyes On Earth (application for Windows) attached.


5
Arctic sea ice / Re: The 2019 melting season
« on: September 15, 2019, 01:11:03 AM »
I think you both can continue to post 1 post a day of videos. It is a good contribution. Make them a size so they don't autoload.
If someone doesn't like them and it really bothers them, this forum has a block feature, were you can select to hide posts from a certain user (then it says post is hidden, click to show).
There have been alot of people posting this season, you can't like what everyone contributes.

6
Arctic sea ice / Re: The 2019 melting season
« on: August 25, 2019, 09:29:00 AM »
Some pictures from the ongoing cyclone.
Observing the wind speed and temperature.
Picture 2 and 3 at 1000hPa

7
Arctic sea ice / Re: The 2019 melting season
« on: July 29, 2019, 11:47:28 AM »
Here, in this link is a thorough Arctic weather update from meteorologist Nick Humphrey:

(Just an excerpt, read the full update on the link):

Quote
Highly anomalous heat from Europe will surge over Greenland surrounding areas Monday, peaking Tuesday-Thursday before decreasing in intensity over the weekend. This will cause a rapid rise in Greenland surface ice melt extent and more rapid Arctic sea ice losses.

Also note a significant cool air mass for late-July/early August will surge across Scandinavia, Eastern Europe and western Russia this week. Sweden, Norway and Finland just saw some of their hottest temperatures on record.

(...)

As I showed in my previous Arctic post, in addition to heat causing widespread surface melt on the Greenland Ice Sheet and additional sea ice melting, a Pacific to Atlantic windflow pattern will be favorable to pulling sea ice away from the Canadian Archipelago and north coast of Greenland. Open water is likely to grow north of the coast of Greenland and farther to the West. This is concerning because it means the waters locally can warm significantly and the entire thin ice area will be more vulnerable to cyclones later in August and September.

Full update: Arctic Forecast for Heat Wave This Week

Pages: [1]