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grixm

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Re: MOSAiC news
« Reply #900 on: July 13, 2020, 08:44:23 AM »

bluice

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Re: MOSAiC news
« Reply #901 on: July 13, 2020, 08:55:13 AM »
Marinetraffic has logged the following location, speed and course.

Latest cloud free Sentinel picture is from July 7th. Assuming steady course and speed they should be found approximately 24 NM to NE from the latest known location

Jim Hunt

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Re: MOSAiC news
« Reply #902 on: July 13, 2020, 02:54:11 PM »
Marinetraffic has logged the following location

SailWX has an hourly log of location etc.

https://www.sailwx.info/shiptrack/shipposition.phtml?call=DBLK
Reality is merely an illusion, albeit a very persistent one - Albert Einstein

igs

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Re: MOSAiC news
« Reply #903 on: July 13, 2020, 04:36:16 PM »
We thank you for what you have done to make this world a better place  FOW!

I have great respect for you! I fight polluters every day and it pisses me off!

I have three kids and I worry about their future because of AGW. I guess we all have our weak spots, mine is my children. Sorry if I get overly emotional sometimes.

That was totally justified, I would wish sometimes that exaxtly this kind of analysis would be considered upon other opportunities and what adds to it is that especially now in corona many scientists wonder why people are not glued to their lips.

A lot is about funding and careers, understandable in general but no appropriate when it comes to "To Be Or Not To Be" topics at hand.
Knowledge that does not increase every day will decrease every day !

blumenkraft

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Re: MOSAiC news
« Reply #904 on: July 13, 2020, 06:27:30 PM »
R12 transmittance is through the roof!
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #905 on: July 14, 2020, 02:12:33 PM »
Trivia:

In this German TV show 'DARK' (https://www.imdb.com/title/tt5753856) i'm currently watching there are scenes from the 80s (it's about time travel and whatnot, good show). In one scene you hear the news on the radio. The newsreader talks about how the Polarstern just went for an expedition to research the Ozon hole in Antarctica.

Yes, ladies and gentlemen, the Polarstern is doing science since 1982 for us. 38 years!
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

bluice

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Re: MOSAiC news
« Reply #906 on: July 14, 2020, 03:12:18 PM »
Trivia:

In this German TV show 'DARK' (https://www.imdb.com/title/tt5753856) i'm currently watching there are scenes from the 80s (it's about time travel and whatnot, good show). In one scene you hear the news on the radio. The newsreader talks about how the Polarstern just went for an expedition to research the Ozon hole in Antarctica.

Yes, ladies and gentlemen, the Polarstern is doing science since 1982 for us. 38 years!
That's pretty cool.

BTW I just started the third season :)

blumenkraft

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Re: MOSAiC news
« Reply #907 on: July 14, 2020, 03:52:51 PM »

BTW I just started the third season :)

Enjoy, Bluice. :)
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

uniquorn

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Re: MOSAiC news
« Reply #908 on: July 16, 2020, 10:59:46 AM »
drift update. Rapid change in speed and direction amongst loosely bound floes for PS on jul12. Heading south at a moderate speed now.

blumenkraft

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Re: MOSAiC news
« Reply #909 on: July 16, 2020, 11:11:48 AM »
A little bit further south and we should see warmer Atlantic waters.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

bluice

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Re: MOSAiC news
« Reply #910 on: July 16, 2020, 01:58:20 PM »
Would be interesting to see a timelapse when the actual melting happens and the big floes turn into opean ocean.

uniquorn

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Re: MOSAiC news
« Reply #911 on: July 16, 2020, 03:05:39 PM »
Will they stay with the floe to the bitter end? Depending on the wind it might look like this.

https://twitter.com/arndt_st

Quote
It’s done! After 119 days in the ice, we past a super sharp ice edge. While the ice gave us a tough time since we left the @MOSAiCArctic  floe 2.5 weeks ago, the transition into open water was rather quick. We will reach Isfjorden later today.

uniquorn

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Re: MOSAiC news
« Reply #912 on: July 16, 2020, 09:50:51 PM »
Delaunay triangulation of a selection of buoys using iabp data to see what they show of the incident on jul12 (day194)

uniquorn

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Re: MOSAiC news
« Reply #913 on: July 19, 2020, 11:57:51 AM »
PS approaching the 'Fram flux gate'. Possibly beginning to experience the effects of cross currents and eddies on top of (underneath) recent changeable winds. Bow radar is chaotic. Currently in unstable ice.
1. bow radar animation (click)
2/3 passing on some A-Team analysis images.
4. Drift update (click)

blumenkraft

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Re: MOSAiC news
« Reply #914 on: July 19, 2020, 06:19:44 PM »
A lot of open water around the Polarstern these days...

Water temperatures are minus 1.4˚C now.
« Last Edit: July 19, 2020, 07:47:58 PM by blumenkraft »
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #915 on: July 19, 2020, 07:45:22 PM »
We got 9 cloud-free frames from the area via RAMMB-SLIDER.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

uniquorn

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Re: MOSAiC news
« Reply #916 on: July 20, 2020, 11:25:29 AM »
Old news but quite interesting.

https://blogs.agu.org/thefield/2020/07/17/postcards-from-a-frozen-icebreaker-part-35/
Quote
By Matthew Shupe

6/19/20 Taking things head on
We ran into the floe. Directly. While scientifically we decided it would be best to moor to the floe along the ship’s port side to facilitate CTD operations, others onboard have been concerned about the Polarstern’s ability to hold its position alongside the floe in the face of ice pressure. We’ve, of course, experienced a lot of pressure thus far, which has been a great challenge at times. And so, the decision was made to instead drive straight into the floe and attempt to embed Polarstern. This type of position, the thinking goes, would allow the ship to be effectively protected from some of the ice forces by the floe itself. Polarstern cruised out from our parking spot from the last days and navigated around the floe to the south and then east, then cruised full speed ahead directly into the SE flank of the remaining MOSAiC floe. The ship was eventually stopped by the very thick ice, ridged and chunky. Backed up for another go, trying to embed further, but no such luck. The floe was not allowing such an entrance, and instead a crack opened up to the port side and another chunk of the floe broke off. Ever smaller the floe gets. In the morning the captain maneuvered the ship so that the starboard side was along the ice floe, and we will stick in this position and see how things go.

uniquorn

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Re: MOSAiC news
« Reply #917 on: July 22, 2020, 11:10:15 AM »
Mosaic Pbuoys passing through the 'Fram flux gate', jun25-jul22

uniquorn

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Re: MOSAiC news
« Reply #918 on: July 22, 2020, 03:31:59 PM »
A lot of open water around the Polarstern these days...
Water temperatures are minus 1.4˚C now.
Maybe they didn't get the location quite right on that image. The open water doesn't match up with bow radar or today's S1. It's possible there was rapid change in that eddy.
« Last Edit: July 22, 2020, 03:43:18 PM by uniquorn »

blumenkraft

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Re: MOSAiC news
« Reply #919 on: July 22, 2020, 03:43:05 PM »
I was thinking something doesn't fit.

And yesterday the water temperature went down to minus 1.6˚C again and the image a) showed them to the right of that open water area and b) the area of open water reduced.

Mysterious!

“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

uniquorn

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Re: MOSAiC news
« Reply #920 on: July 22, 2020, 03:44:26 PM »
Well it's a big eddy. rammb available?

blumenkraft

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Re: MOSAiC news
« Reply #921 on: July 22, 2020, 03:47:17 PM »
Yeah, about that, RAMMB-SLIDER stopped updating again yesterday. :(

Last image 2020-07-21 20:35:22 UTC but cloudy.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

seaice.de

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Re: MOSAiC news
« Reply #922 on: July 23, 2020, 11:13:33 AM »
The @MOSAiCArctic ice floe speeds up southwards and goes down the drain in Fram Strait

This experimental AMSR2 product enhances refrozen leads.

Polarstern and Fram track are hopefully better distinguishable for red-green color-blind.

Methods and data: doi.org/10.3390/rs6053841 doi.org/10.5194/tc-6-343-2012 doi.org/10.7265/N5MS3QNJ

uniquorn

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Re: MOSAiC news
« Reply #923 on: July 23, 2020, 12:56:32 PM »
Thanks seaice.de.



Temporary post of conversion to mp4
« Last Edit: July 23, 2020, 06:44:41 PM by uniquorn »

be cause

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Re: MOSAiC news
« Reply #924 on: July 23, 2020, 01:26:30 PM »
some things deserve permanence Uniquorn .. :) b.c.
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 + 2 = 2021 
 (phew)

Jim Hunt

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Re: MOSAiC news
« Reply #925 on: July 23, 2020, 03:01:02 PM »
The @MOSAiCArctic ice floe speeds up southwards and goes down the drain in Fram Strait

A most enlightening comparison with the original Fram!

Thanks Lars.
Reality is merely an illusion, albeit a very persistent one - Albert Einstein

uniquorn

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Re: MOSAiC news
« Reply #926 on: July 23, 2020, 07:03:44 PM »
Jul16-22 mosaic multisensor map (forgot to include dates), click to run
I slowed the animation down a bit and improved the contrast near the PS location on 3 of the images. PS just skirts the open water of the eddy. The bright dot is easily visible.
click twice for full res.
« Last Edit: July 24, 2020, 12:03:06 AM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #927 on: July 23, 2020, 10:29:49 PM »
Polarview are providing images again after a short interlude. Here is today's S1 of PS between two eddies.
PS area is highlighted with slightly increased contrast. 80.0N line to the right.

uniquorn

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Re: MOSAiC news
« Reply #928 on: July 23, 2020, 11:52:12 PM »
and finally a half way decent rammb of the 3 eddies in a row, https://col.st/sO27l
That explains the buoy drift (80N is lowest lat line)
« Last Edit: July 24, 2020, 12:34:51 AM by uniquorn »

jdallen

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Re: MOSAiC news
« Reply #929 on: July 24, 2020, 12:07:37 AM »
and finally a half way decent rammb of the 3 eddies in a row
Fascinating!

Side effect of weak ice (sadly) is we get to see the movement of currents crossing into the central basin.
This space for Rent.

uniquorn

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Re: MOSAiC news
« Reply #930 on: July 25, 2020, 12:02:11 PM »
Drift update as the buoy 'peleton' approaches the larger eddy. An overview from Kaleschke sic leads, which shows the eddies very well, updated with 2 days of amsr2-uhh, jun26-jul24.

 A closer look using Pbuoy drift jul15-25 (click, 4.6MB)
« Last Edit: July 25, 2020, 07:56:15 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #931 on: July 25, 2020, 02:05:55 PM »
Wow, PS (bright dot, centre) is going right through the middle of the eddy.
08:17UTC today

Quote
bow radar shows the ship rotating wildly 270º in the last 24 hrs, still attached to the floe but with a large area of open water on the port side and in front of the bow.

The PS is moving south at about 22 km/day despite a moderate tail wind of 4-5 km/hr and has just crossed the 80º parallel where nullschool first starts showing EGC currents, of ~14 km/day.
« Last Edit: July 25, 2020, 02:47:54 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #932 on: July 26, 2020, 02:38:00 PM »
Added couple of drifter buoys in the Greenland sea (not on ice) for a wider perspective

NotaDenier

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uniquorn

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Re: MOSAiC news
« Reply #934 on: July 27, 2020, 02:59:50 PM »
Sea Ice Ticker No. 46, 27 July 2020: Central Arctic much too warm for July
Quote
The Central Arctic is currently much warmer than the long-term mean, continuing the trend that has been apparent since June this year. Average air temperatures at the 925 mb level (roughly 760 m above sea level) for the first half of July were unusually high over the central Arctic Ocean – up to 10 degrees Celsius. These above-average temperatures were connected to high sea-level pressure centred over the East Siberian and Chukchi Seas. Arctic temperatures along the Russian coast were near or slightly above average. This represents a significant change from June, when temperatures along the Siberian coast of the eastern Laptev Sea were up to 8 degrees Celsius above average. It is likely that these high temperatures, combined with ice movement away from the coast, initiated early ice retreat along the Russian coast, and the opening of the North-East Passage. At present, the ice extent is extremely low – the lowest level for this time of year since the beginning of satellite observation. Sea-ice extent in the Arctic has been at a historically low level since 1 July 2020. On 19 July, the ice extent was 570,000 km² lower than the former record low in 2019. This sea-ice loss is represents an area roughly the size of France. 26 July this difference reaches still a value of circa 260.000 km². The coming weeks will show how this will affect the overall ice development and the MOSAiC expedition.

This ani shows all the mosaic buoys that I could find to see how they coped. One is temporarily spinning in the eddy, another has possibly met it's end. No drift speed.
« Last Edit: July 27, 2020, 03:05:20 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #935 on: July 27, 2020, 07:14:10 PM »
Sea-ice extent in the Arctic at a historical low

Quote
Meanwhile, the Polarstern is currently in Fram Strait between Svalbard and Greenland. Prof Markus Rex, Leader of the MOSAiC Project and an atmospheric physicist at the Alfred Wegener Institute in Potsdam, is currently on board. As he reports: “All the ice around us has long-since broken up or been ground into fragments. But our MOSAiC floe, selected for the expedition back in October 2019, continues to offer an impressively stable basis for our work. Nevertheless, even this floe will soon end its lifecycle in the marginal ice zone. Today we measured a balmy 14 degrees Celsius 300 m above the floe, and the melting is in full swing. For the last phase of MOSAiC, our focus will be on the freezing phase: the last piece of the puzzle in our observations of the Arctic’s annual cycle. Accordingly, in the last phase we will proceed far to the north, where the freezing will soon begin.” This will most likely take place in mid-August, once the last resupply and exchange of research staff and crew have been completed.

Hopefully they are stocking up with more buoys  ;)
Yesterday's S1

Today's fomo image at least 3 is 4 weeks old
« Last Edit: July 27, 2020, 10:26:24 PM by uniquorn »

blumenkraft

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Re: MOSAiC news
« Reply #936 on: July 30, 2020, 05:59:00 PM »
The ice edge is nigh.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #937 on: July 31, 2020, 05:56:33 PM »
-1˚C water temperature peak today briefly.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #938 on: July 31, 2020, 06:59:19 PM »
Time to Say Goodbye

Quote
The MOSAiC floe’s days are numbered, but Polarstern will continue the expedition further north

[31. July 2020]  After exactly 300 days of drifting with the MOSAiC floe, the international team around Expedition Leader Markus Rex on Wednesday, 29 July 2020, started the dismantling of the research camp and evacuation of the floe. Just one day later the floe finally broke into several fragments. After accompanying the floe on its journey for ten months, the team will now shift its focus to the last remaining puzzle piece in the annual cycle of Arctic sea ice: the start of the ice formation process.

Link >> https://www.awi.de/en/about-us/service/press/press-release/time-to-say-goodbye.html
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #939 on: August 02, 2020, 06:19:29 PM »
This clearly looks as if Polarsten used its engines.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #940 on: August 02, 2020, 06:35:57 PM »
Here is an update on the S buoys. The R buoys stopped updating after my last post on them.

(Click to play. GIF changes frame every 500ms)
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

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Re: MOSAiC news
« Reply #941 on: August 03, 2020, 01:15:08 PM »
They have left the floe:

blumenkraft

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Re: MOSAiC news
« Reply #942 on: August 04, 2020, 05:32:22 PM »
The Polarstern moved south and crossed an eddy. They recorded above zero water temperatures. I assume this is related.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

blumenkraft

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Re: MOSAiC news
« Reply #943 on: August 05, 2020, 08:09:33 PM »
Same thing as yesterday. They moved around, crossed the eddy, and we see higher SST.
“I’m an introvert. I’m just different that’s all. I’m so sorry. I don’t have a gun. I don’t do that stuff... All I was trying to do was to become better. I’ll do it... You all are phenomenal. You are beautiful. And I love you. Try to forgive me. I’m sorry.”

Elijah McClain

OffTheGrid

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Re: MOSAiC news
« Reply #944 on: August 05, 2020, 09:42:11 PM »
Itp 94 deployed by the Mosaic campaign has finished Its run and returned some very disturbing readings. Dissolved oxygen at near zero for the whole Atlantic side transit. Dissolved and particulate organic matter, turbidity through the roof. I desperately hope the DO sensor was faulty. But it would explain why all the polar bears were way out on the Atlantic front.
Major high turbidity upwelling from well below 760m depths was detected out near the pole. Suspect that sediment and methane laden bottom freshwater flow from Laptev and/or 79N NE Greenland subglacial outbursts have busted the deep halocline stability out in the deep basin bringing up ex-hypersaline bottomwater mass from the deep basin. VERY scary. Our much appreciated contributer
 Veli albert kallio is the world acknowledged professional expert on this kind of thing. We've had discussions previously  about this sort of possibility, with Wadhams and other experts I work with involved. I'll get a conference going. We may have to look at urgent oxygen and salt restoratation in deep benthic Atlantic side of the Lomonosov.
Would be very helpful if Uniquorn can do one of his locations/date animations over bathometry so we can localise events clearly.
« Last Edit: August 06, 2020, 07:39:44 PM by OffTheGrid »

OffTheGrid

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Re: MOSAiC news
« Reply #945 on: August 05, 2020, 09:50:36 PM »
Lots of sensors on this buoy. Reason it needed to do only one up/ down crawl per 3 days, causing the lumpy looking T/S plots btw.

OffTheGrid

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Re: MOSAiC news
« Reply #946 on: August 06, 2020, 09:13:17 PM »
Polarsterns been sampling that eddy for precisely that reason. This looks like well over 20 gigatons of subglacial outbursts in the NW alone in the last few weeks. Not only are they heavy with up to 90% rock, capable of carving canyons over 1000 km out into deep ocean basins, but the surging of fast glaciers can melt the bedrock at 1500 C plus, so they can be very warm indeed.

jdallen

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Re: MOSAiC news
« Reply #947 on: August 07, 2020, 12:31:49 AM »
Polarsterns been sampling that eddy for precisely that reason. This looks like well over 20 gigatons of subglacial outbursts in the NW alone in the last few weeks. Not only are they heavy with up to 90% rock, capable of carving canyons over 1000 km out into deep ocean basins, but the surging of fast glaciers can melt the bedrock at 1500 C plus, so they can be very warm indeed.
Reference?  Nothing I've ever heard of.
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binntho

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Re: MOSAiC news
« Reply #948 on: August 07, 2020, 06:58:23 AM »
Polarsterns been sampling that eddy for precisely that reason. This looks like well over 20 gigatons of subglacial outbursts in the NW alone in the last few weeks. Not only are they heavy with up to 90% rock, capable of carving canyons over 1000 km out into deep ocean basins, but the surging of fast glaciers can melt the bedrock at 1500 C plus, so they can be very warm indeed.
Reference?  Nothing I've ever heard of.

Another visitor from Fantasyland? No glacier is 90% rock, no glacier carves canyons over 1000km out into deep ocean, and no glacier ever reaches rock-melting temperatures at bottom.

<Removed unnecessary part. O>
« Last Edit: August 07, 2020, 11:18:27 AM by oren »
because a thing is eloquently expressed it should not be taken to be as necessarily true
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Tor Bejnar

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Re: MOSAiC news
« Reply #949 on: August 07, 2020, 07:21:24 PM »
Slightly OT, but from GSA (Rock glacier morphometry, San Juan Mountains, Colorado: Summary)
Quote
Rock glaciers are common periglacial denudation features above timberline in the San Juan Mountains of southwestern Colorado. They occur as porridge-like lobate or tongue-shaped masses of rock and ice which move downslope at rates of as much as 100 cm/yr (Barsch, 1977).
Walking on them in mid-summer, all you see is rock, so "90% rock" might be right.  (Internet searches show rock glaciers occur elsewhere, too.)

But your other complaints are good.
Arctic ice is healthy for children and other living things.