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uniquorn

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MOSAiC news
« on: September 11, 2019, 11:43:21 AM »
The MOSAiC expedition begins on the Sep20.

Quote
MOSAiC - Multidisciplinary drifting Observatory for the Study of Arctic Climate

It could be the largest-scale Arctic research expedition of all time: in September 2019 the German research icebreaker Polarstern will depart from Tromsø, Norway and, once it has reached its destination, will spend the next year drifting through the Arctic Ocean, trapped in the ice. A total of 600 people from 19 countries, who will be supplied by other icebreakers and aircraft, will participate in the expedition – and several times that number of researchers will subsequently use the data gathered to take climate and ecosystem research to the next level. The mission will be spearheaded by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI).

The expedition programme is here
More information here:  https://www.meereisportal.de/en/mosaic/

Image of the general set-up
Area of MOSAiC start location overlaid onto unihamburg amsr2-uhh, aug1-sep11
edit: tidied up a bit and updated Polarstern position image
 
« Last Edit: October 01, 2019, 04:27:25 PM by Neven »

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Re: MOSAiC news
« Reply #1 on: September 11, 2019, 06:22:35 PM »
I think this is a very important expedition, so I'm going to sticky it for a while.
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uniquorn

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Re: MOSAiC news
« Reply #2 on: September 11, 2019, 06:59:44 PM »
A virtual CTD cast of the proposed start area(outlined in red) using mercator salinity(0-300m),  temperature (0m-100m), 0m temperature anomaly and sea surface height with bathymetry, sep10
Quote
A CTD or Sonde is an oceanography instrument used to measure the conductivity, temperature, and pressure of seawater (the D stands for "depth," which is closely related to pressure). The reason to measure conductivity is that it can be used to determine the salinity.
https://en.wikipedia.org/wiki/CTD_(instrument)

Jim Hunt

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Re: MOSAiC news
« Reply #3 on: September 11, 2019, 07:21:29 PM »
There is also a dedicated MOSAiC web site. Here's the sea ice section:

https://www.mosaic-expedition.org/science/sea-ice/

and here is the news section:

https://www.mosaic-expedition.org/news/

Stefan Hendricks amongst others is "Tweeting" about the expedition:

https://twitter.com/hashtag/MOSAiCexpedition
« Last Edit: September 11, 2019, 07:33:52 PM by Jim Hunt »
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uniquorn

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Re: MOSAiC news
« Reply #4 on: September 11, 2019, 08:41:54 PM »
Thanks Jim. edit: While this is great news in the longer term, hopefully there will be some near real time data
« Last Edit: September 12, 2019, 10:27:19 AM by uniquorn »

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Re: MOSAiC news
« Reply #5 on: September 12, 2019, 10:00:52 AM »
Refugees welcome

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Re: MOSAiC news
« Reply #6 on: September 12, 2019, 04:36:23 PM »
Meereisportal will also offer lots of data:

Quote
Auf meereisportal.de werden daher exklusiv Daten und Informationen der MOSAiC-Meereisphysik bereitgestellt, um die aktuelle Meereissituation, die Drift der MOSAiC-Station sowie erste Ergebnisse von Bojen und anderen Messverfahren in Karten- und Datenmaterial bereitzustellen.

Im Informationsbereich von meereisportal.de unter www.meereisportal.de/mosaic/ werden aktuelle Informationen zur MOSAiC-Expedition mit Fokus auf die Meereisphysik gegeben.
In zwei Beiträgen werden unter anderem atmosphärischen Reanalyse-Daten der vergangenen Jahre benutzt, um eine wahrscheinliche Entwicklung des Meereises vorherzusagen. Mit Hilfe des AWI-Vorhersagesystems (Sea Ice Outlook) werden möglichen Eisbedingungen (Eisbedeckung und Eisdicke) in der geplanten Startregion bestimmt und erklärt wie dieses System die Routenplanung von FS Polarstern unterstützen kann. In einem zweiten Beitrag wird eine Analyse der möglichen Drift der MOSAiC-Station im Winter 2019/20 durch die zentrale Arktis, basierend auf Drift Satellitendaten der vergangenen dreizehn Jahre beschrieben. Weiterhin berichtet bis zum Beginn des Drift-Experimentes, wenn FS Polarstern an einer geeigneten Meereisscholle festgemacht und das Camp aufgebaut worden ist, der AWI-Meereisticker zweimal wöchentlich über die Eisbedingungen in der Arktis und die Route, die FS Polarstern nehmen wird.

Im Datenportal von meereisportal.de ist ein spezieller MOSAiC-Bereich www.meereisportal/mosaic/daten/ aufgebaut worden, in dem unterschiedliche tagesaktuelle Karten, Daten und Zusatzinformationen zur Expedition rund um das Thema Meereis dargestellt sind und auch heruntergeladen werden können. Folgende Produkte werden hier angeboten:

Meereiskonzentration Detailkarte der MOSAiC Expedition
Vergleich täglicher Eiskanten
Polarstern Drift basierend auf „klimatologischer“ Driftvorhersage und -analyse
Polarstern Drift-Szenarien (einschließlich „Nahe“-Echtzeit)
Multi-Satelliten-Produkt
Meereisbojen
Aktuelle Bilder zur Eisbewegung vom Schiffsradar


Auf diese Weise kann man von jedem Ort auf der Welt quasi „live vor Ort sein“, alles rund um das Thema Meereis dieser Expedition verfolgen und diese einmalige Expedition begleiten und miterleben!

Mit besten Grüßen vom gesamten MOSAiC-Meereisteam,

Renate Treffeisen und Klaus Grosfeld
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Phil.

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Re: MOSAiC news
« Reply #7 on: September 12, 2019, 04:45:21 PM »
Unfortunately their English page doesn't exist yet.

uniquorn

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Re: MOSAiC news
« Reply #8 on: September 12, 2019, 05:33:40 PM »
Sea Ice Detail map of the MOSAiC expedition
Comparison of daily ice edges (or ridges)
Polarstern drift based on "climatological" drift prediction and analysis
Polarstern drift scenarios (including "near" real time)
Multi-satellite product
sea ​​ice buoys
Current pictures of ice movement from the ship's radar

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Re: MOSAiC news
« Reply #9 on: September 12, 2019, 06:33:01 PM »
Unfortunately their English page doesn't exist yet.

The data page is available in English:

http://data.meereisportal.de/gallery/index_new.php?lang=en_US&survey=survey&active-tab1=mosaic&active-tab2=

I happily downloaded the image below. It's quite big! Let me know if a more modest version would be preferable.
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uniquorn

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Re: MOSAiC news
« Reply #10 on: September 12, 2019, 10:49:03 PM »
osi-saf ice drift over summer for the mosaic startup area, jun-sep11 (every 2 days to reduce file size).

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Re: MOSAiC news
« Reply #11 on: September 13, 2019, 04:34:57 PM »
13 drift estimates based on 2005-2017drift starting from 14 different locations within the start area by Dr Thomas Krumpen. The start location is marked with a star.
Quote
Polarstern drift

The ship’s potential drift route can be roughly estimated in advance by reconstructing the course that the ice followed from the starting point in past years. This involves the use of satellite data, which depicts the ice drift in the Arctic on a daily basis. The analytical tool used for the ice drift is called IceTrack and was developed at the AWI. In addition to various types of satellite data (ice drift, ice concentration, ice thickness), reanalysis data – which provides insights into temperature, wind speed and atmospheric pressure in the Arctic – is taken into account. In this way, not only the ice drift in the past years can be reconstructed for individual potential starting points, but all key atmospheric factors influencing the ice can also be included. A comprehensive description of these methods was recently released in connection with a study that investigated changes in the Transpolar Drift as a result of global warming (source: Nature).

The data portal displays drift scenarios for various potential starting points. Each figure shows the drift trajectories for the years 2005 – 2017 for the respective starting point (e.g. 85°N / 130°E). For the purposes of the drift analysis, the starting date is always 1 October of the respective year. The ice’s progress in the course of a year is reconstructed using the IceTrack algorithm, and the calculation is only stopped when the ice cover at the respective position drops below a certain threshold (50 %), at which point we have to assume that the MOSAiC ice floe would have melted. The colours used for the trajectories symbolise the month for the respective position.

uniquorn

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Re: MOSAiC news
« Reply #12 on: September 14, 2019, 05:00:02 PM »
The mosaic website provides a link to the International Arctic Buoy Programme. Daily data from the buoy table is available here http://iabp.apl.washington.edu/maps_daily_table.html

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For buoys that are still reporting, raw plots of the data are available by clicking the buoy's id. More detailed plots are available for buoys that have stopped reporting. These more detailed plots include satellite derived buoy quantities such as surface temperature and ice concentration, and also reanalysis quantities from MERRA, including atmospheric temperature. The reanalysis products actually use buoy data in their calculations, but they have expert filtering techniques for eliminating the use of bad data in their final product. Comparing raw buoy data to their final product is therefore a good way of estimating buoy data quality, though differences between the interpolated field and any particular buoy data value is to be expected.

All data provided here are raw, and only include quatities of atmospheric interest: Sea Level Pressure (BP), Surface Temperature (Ts), and Atmospheric Temperature(Ta). Many buoys also contain interesting ice and ocean quantities, accessible via their respective sites. IMBs have high resolution temperature readings of the ice layer, for example, while UpTempOs typically have a 60m thermistor string to sample ocean temperatures. ITPs actually profile the water column down to 500m or more.
« Last Edit: September 14, 2019, 11:08:19 PM by uniquorn »

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Re: MOSAiC news
« Reply #13 on: September 15, 2019, 10:33:39 AM »
Cross posted from the melting season thread.

I am reliably informed that amongst the equipment to be deployed will be four type 3 seasonal ice mass balance buoys:

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Re: MOSAiC news
« Reply #14 on: September 17, 2019, 01:57:55 AM »
More information just in from Don Perovich re IMB buoys:

http://GreatWhiteCon.info/2019/09/the-mosaic-expedition/#comment-289494

Quote
In addition to the SIMBs there will be other buoys studying the atmosphere, ocean, and ice motion.

Our data will be available in near real-time
  :)
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uniquorn

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Re: MOSAiC news
« Reply #15 on: September 17, 2019, 01:03:29 PM »
Mosaic startup area today, worldview aqua modis, small contrast adjustment
https://go.nasa.gov/31Gb6i8

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Re: MOSAiC news
« Reply #16 on: September 20, 2019, 10:27:41 AM »
Great podcast with Markus Rex from Alfred-Wegener-Institut about MOSAiC.

So sorry, it's in German.  :-\

Link >> https://overcast.fm/+B4ywuTzEU
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Re: MOSAiC news
« Reply #17 on: September 21, 2019, 12:09:54 AM »
https://www.awi.de/en/about-us/service/press/press-release/this-evening-sees-the-start-of-mosaic-the-greatest-arctic-research-expedition-of-all-time.html
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After a decade of preparations, it’s finally time: this evening at 8:30 p.m. the German icebreaker Polarstern will depart from the Norwegian port of Tromsø. Escorted by the Russian icebreaker Akademik Fedorov, she will set sail for the Central Arctic. On board researchers will investigate a region that is virtually inaccessible in winter, and which is crucial for the global climate. They will gather urgently needed data on the interactions between the atmosphere, ocean and sea ice, as well as on the ecosystem. Thanks to the collaboration between international experts, the one-year-long ice drift past the North Pole will take climate research to a completely new level.
https://www.mosaic-expedition.org/expedition/
« Last Edit: September 22, 2019, 12:15:38 PM by uniquorn »

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Re: MOSAiC news
« Reply #18 on: September 22, 2019, 08:01:32 PM »
During the beginning of PS122 (mosaic) the Russian research icebreaker Akademik Fedorov from the Arctic and Antarctic Research Institute (AARI) will join Polarstern.

The Polarstern’s companion vessel, the Akademik Fedorov has ‘been there, done that’. On 2 August 2007, it reached the North Pole with 100 scientists and researchers and two deep sea mini-submarines where the scientists dove to a depth of more than 13,200 feet (4,000 m) to collect sediment cores.

Some background history while icebreakers are in transit.

https://en.wikipedia.org/wiki/Drifting_ice_station
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An idea to use the drift ice for the exploration of nature in the high latitudes of the Arctic Ocean belongs to Fridtjof Nansen, who fulfilled it on Fram between 1893 and 1896. The first stations to use drift ice as means of scientific exploration of the Arctic originated in the Soviet Union in 1937, when the first such station in the world, North Pole-1, started operations.[1]

North Pole-1 was established on May 21, 1937 some 20 km from the North Pole by the expedition into the high latitudes. Sever-1, led by Otto Schmidt. "NP-1" operated for 9 months, during which the ice floe travelled 2,850 kilometres. On February 19, 1938, Soviet ice breakers Taimyr and Murman took off four polar explorers from the station, who immediately became famous in the USSR and were awarded titles Hero of the Soviet Union: hydrobiologist Pyotr Shirshov, geophysicist Yevgeny Fyodorov, radioman Ernst Krenkel and their leader Ivan Papanin.

Since 1954 Soviet "NP" stations worked continuously, with one to three such stations operating simultaneously each year. The total distance drifted between 1937 and 1973 was over 80,000 kilometres. North Pole-22 is particularly notable for its record drift, lasting nine years. On June 28, 1972 the ice floe with North Pole-19 passed over the North Pole for the first time ever.

During such long-term observations by "NP" stations, a lot of important discoveries in physical geography were made, valuable conclusions on regularities and the connection between processes in the polar region of the Earth's hydrosphere and atmosphere were obtained. Some of the most important discoveries were finding the deep-water Lomonosov Ridge,[2] which crosses the Arctic Ocean, other large features of the ocean bottom's relief, the discovery of two systems of the drift (circular and "wash-out"), the fact of cyclones' active penetration into the Central Arctic.

Akademik Fedorov location
https://www.sailwx.info/shiptrack/shipposition.phtml?call=UCKZ
« Last Edit: September 24, 2019, 03:00:23 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #19 on: September 22, 2019, 08:39:03 PM »
Mosaic startup location with Zack Labe's sept1-18 925mb temp anomaly. https://pbs.twimg.com/media/EE6iKr0UYAAfDcy.jpg
Firstly over open water to show ascat features (contrast adjusted), then over land and ice.
The mask was created using middle concentration amsr2-uhh ice.
edit: forgot scale and thanks to A-Team
« Last Edit: September 22, 2019, 09:09:13 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #20 on: September 23, 2019, 08:53:41 AM »
« Last Edit: September 24, 2019, 03:00:03 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #21 on: September 23, 2019, 09:16:11 AM »
More background on ice drift expeditions, 2014:

Alone on an Arctic ice floe, with a hovercraft
By Carolyn Gramling Sep. 12, 2014
https://www.sciencemag.org/news/2014/09/alone-arctic-ice-floe-hovercraft

Somewhere in the Arctic Ocean, two Norwegian scientists are adrift on an ice floe, equipped with a year’s worth of food and fuel—and one research hovercraft named SABVABAA (Inuit for “flows swiftly over it”). University of Bergen/Nansen Environmental and Remote Sensing Center professor emeritus Yngve Kristoffersen, 72, and crew member Audun Tholfsen established ice drift station FRAM-2014/15 on the 1.1-meter-thick floe on 30 August, when it was 280 kilometers from the North Pole. Over the next few months, they will drift northward along the submarine Lomonosov Ridge, taking sediment cores to learn about the polar environment more than 60 million years ago. It’s the hovercraft that makes the setup truly unique: Using SABVABAA, the researchers can travel up to 100 kilometers from their floating base, assessing ice properties, currents, and water temperatures. The hovercraft—the brainchild of Kristoffersen and physicist John Hall, 74, of the Geological Survey of Israel—also makes it possible to conduct a year-round study, Hall says. The ridge is covered by thick multiyear ice, forbidding to icebreakers, but SABVABAA (pictured) “allows you to have boots on the ground.”

Video here:  <https://vimeo.com/174631373>  (remove chevrons)
« Last Edit: September 23, 2019, 09:24:56 AM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #22 on: September 23, 2019, 11:54:17 AM »
Possibly the last day for full daylight visual from worldview on the startup sight. Is there any 1.5m thick ice there?
Uni-bremen smos sep22.

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Re: MOSAiC news
« Reply #23 on: September 23, 2019, 07:23:15 PM »
The last 7days of the mosaic multisensor map of the startup area (small)
click to run

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Re: MOSAiC news
« Reply #24 on: September 25, 2019, 07:02:01 PM »
Following up on ice thickness above, here is ascat, contrast enhanced, overlaid with amsr2-uhh low concentration ice at 80%, with a further overlay of SMOS 50cm thickness or greater outlined in white. The mosaic start up area is indicated in red. sep1-24
amsr2-uhh 100% concentration ice has been set to fully transparent as have all the SMOS thicknesses lower than 50cm

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Re: MOSAiC news
« Reply #25 on: September 25, 2019, 11:16:05 PM »
Following up on ice thickness above, here is ascat, contrast enhanced, overlaid with amsr2-uhh low concentration ice at 80%, with a further overlay of SMOS 50cm thickness or greater outlined in white. The mosaic start up area is indicated in red. sep1-24
amsr2-uhh 100% concentration ice has been set to fully transparent as have all the SMOS thicknesses lower than 50cm

Amazing image! Makes the CAB look like a breeding ground for ice to get just thick enough to where it feeds the ice (perhaps?) still subject to “melting conditions” in the peripheral seas. That really tells a nice overall tale of the importance of the Arctic Summer (>85N perhaps) and also it’s “winter”. It seems like it and perhaps the Greenland sea will be some of the holdout places perhaps as Arctic sea ice extent (ASI) continues its death spiral overall.

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Re: MOSAiC news
« Reply #26 on: September 26, 2019, 12:38:12 PM »
It may still be a little early to use SMOS as a reliable indicator of thickness. Interference around the 'pole hole' should probably be largely ignored. Also note that the SMOS 50cm thickness contour follows some of the weather 'interference' shown by ascat, which is too fast to be related to a thickness change.
Quote
SMOS

The thickness of thin sea ice (SIT) is daily retrieved from observations of the L-band microwave sensor SMOS (Soil Moisture and Ocean Salinity). Horizontal and vertical polarized brightness temperatures in the incidence angle range of 40° to 50° are averaged. The ice thickness is then inferred from the polarization difference and the intensity using an empirical method (Huntemann et al., 2014).

Thin sea ice occurs during the freezing season. In the melting season, the thickness of sea ice is highly variable and the emission properties in the microwave change due to the wetness of the surface and occurrence of melt ponds in the Arctic. Therefore, thickness data are calculated only during the freezing season, that is from October to April in the Arctic and from March to September in the Antarctic. During the melting season, the procedure does not yield meaningful results.

As the resolution of SMOS at the used incidence angle range is about 40 km, only larger regions of thin ice will be retrieved correctly. The rim of thin ice shown in many cases not necessarily indicates thin ice, but can also be caused by the smearing effect (convolution) of the low resolution.

Each day of ice thickness data product are calculated twice to ensure that all swath files were available in the archived product. First processing is done directly on the next day with only about 7 hours delay. At this time it can happen that not all swath files are available and another processing of the same day is initiated 23 hours later. In more than 50% of the time the first processing does not include all swath but usually provides sufficient coverage for Arctic and Antarctic regions.

This service has been developed in the framework of the EU project SIDARUS. After completion of the SIDARUS project end 2013, the service is continued on a best effort base in the context of the Polar View and of the Arctic Regional Ocean Observing System (Arctic ROOS).
The ice edge is likely to move south slowly this year until SST's are lower. It will be interesting to see some 'on the ice' measurements from mosaic when they find a thick enough floe to moor to.
« Last Edit: September 26, 2019, 01:00:51 PM by uniquorn »

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Re: MOSAiC news
« Reply #27 on: September 26, 2019, 05:22:05 PM »
Almost there! \o/
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Re: MOSAiC news
« Reply #28 on: September 26, 2019, 10:57:34 PM »
The first seven days. (slow playing GIF so you can read :) )
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Any sufficiently advanced technology is indistinguishable from magic.

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Re: MOSAiC news
« Reply #30 on: September 27, 2019, 01:52:17 PM »
A closer look at polarstern's locations sep26-27 and this quote from the itinerary
Quote
As part of the journey the four moorings of Vera Schlindwein (DE.AWI) that are located in the area 82°N and 119°E will need to be collected

Hopefully they are successful in locating and collecting the four Gakkel Ridge micro-seismic moorings. A previous paper by Vera Schlindwein here
https://www.researchgate.net/publication/255586449_Microseismicity_of_the_ultraslow-spreading_Gakkel_ridge_Arctic_Ocean_A_pilot_study
Quote
The active mid-ocean ridge of the Arctic Ocean, named Gakkel ridge, is the slowest spreading ridge of the global system of mid-oceanic ridges with full spreading rates declining from about 12.5 to 6 mm yr-1 from west to east. Geological models of seafloor spreading predict a decreasing intensity of magmatic processes with decreasing spreading rate. In summer 2001, the multidisciplinary Arctic Mid-Ocean Ridge Expedition (AMORE2001) discovered robust magmatism at western Gakkel ridge, an amagmatic section further east and pronounced volcanic centres at eastern Gakkel ridge.
edit: updated, join the dots
« Last Edit: September 27, 2019, 11:32:41 PM by uniquorn »

uniquorn

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Re: MOSAiC news
« Reply #31 on: September 27, 2019, 06:13:08 PM »
AMSR2 concentration is a great product but doesn't scale well to Sentinel1 resolution. Meereisportal are now providing a version of the multisensor map without the overlay

sep25-26, small.
It's a real bonus from this expedition already that we can now see clear daily Sentinel1 coverage of this area.
« Last Edit: September 27, 2019, 11:31:53 PM by uniquorn »

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Re: MOSAiC news
« Reply #32 on: September 27, 2019, 09:31:33 PM »
What a difference a day makes. A small crop of the mosaic multisensor high res map showing compaction and refreeze in the startup area, sep19-26

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Re: MOSAiC news
« Reply #33 on: September 28, 2019, 10:18:02 AM »
--- NEWS ---
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Re: MOSAiC news
« Reply #34 on: September 28, 2019, 01:25:49 PM »
gmrt bathymetry with rough sailwx PS location overlay
https://www.gmrt.org/GMRTMapTool/np/
https://www.sailwx.info/shiptrack/shipposition.phtml?call=DBLK

edit: better overlay
« Last Edit: September 28, 2019, 01:42:42 PM by uniquorn »

blumenkraft

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Re: MOSAiC news
« Reply #35 on: September 29, 2019, 09:53:01 AM »
--- NEWS ---
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uniquorn

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Re: MOSAiC news
« Reply #36 on: September 29, 2019, 04:18:45 PM »
Polarstern in the startup area, maybe taking a look at the darker floe due north. It looks like the only candidate at the moment on the multisensor no overlay map
Hopefully they will reduce the triangle size at some point or make it semi transparent.
« Last Edit: September 29, 2019, 04:26:54 PM by uniquorn »

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Re: MOSAiC news
« Reply #37 on: September 29, 2019, 04:52:41 PM »
https://www.sailwx.info/shiptrack/shipposition.phtml?call=DBLK
nullschool temp=-11.9C, PStemp=-7.6C @1400
windy has ecmwf= -7C and gfs= -12C @1400
Are there any volunteers for documenting actual temps vs model temps during the mosaic expedition? Polarstern data is here
« Last Edit: September 30, 2019, 06:26:31 PM by uniquorn »

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Re: MOSAiC news
« Reply #38 on: September 29, 2019, 09:02:13 PM »
Are there any volunteers for documenting actual temps

I'm afraid I'm anxiously awaiting IMB buoy deployment.
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blumenkraft

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Re: MOSAiC news
« Reply #39 on: September 29, 2019, 09:09:17 PM »
+1

(goddamit are we nerds... ;D )
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Re: MOSAiC news
« Reply #40 on: September 30, 2019, 10:22:23 AM »
https://twitter.com/MOSAiCArctic/status/1178323545920696320

Quote
The team of #MOSAiCexpedition takes first steps on the sea ice. They left #Polarstern to deploy a buoy which will provide them data about drift and meteorological conditions. You can
follow the buoy at https://www.meereisportal.de

Meerisportal links to http://iabp.apl.washington.edu/maps_daily_table.html where there are 2 new buoys reporting from day 272 with rather conflicting data (Ts=surface temperature, Ta=atmospheric temperature)
Quote
Note that "Surface Temperature (Ts)" is measured from the bottom of the buoy hull. If the buoy is floating, then the reported temperature is of the sea surface. If the buoy is frozen into the ice, or sitting on top of it, then the reported temperature is of the ground or ice. The freezing temperature of sea water is about -1.8C, so temperature readings below this indicate ground or ice temperatures.
Hopefully they will provide a link to more data on their own site at some point

edit:polarstern hasn't been that far north yet
Akademik Fedorov doesn't report location to sailwx.
edit2: More new buoy data further down the list (-999 means no report)
« Last Edit: September 30, 2019, 12:49:30 PM by uniquorn »

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Re: MOSAiC news
« Reply #41 on: September 30, 2019, 06:00:08 PM »
That's already 30 to 50 centimeters of snow from that picture
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Re: MOSAiC news
« Reply #42 on: September 30, 2019, 06:28:17 PM »
Yes, looks like it, though no coordinates for where it was taken. N84 58 E136 5
« Last Edit: October 01, 2019, 02:47:02 PM by uniquorn »

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Re: MOSAiC news
« Reply #43 on: September 30, 2019, 07:21:27 PM »
Possible site may be hidden by location marker but the previous two day's high res images give a good view of the area. sailwx coords N 85°06' E 137°18' (allow for some drift since the last image)
It's a shame there is no ship's radar yet.
« Last Edit: September 30, 2019, 07:37:45 PM by uniquorn »

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Re: MOSAiC news
« Reply #44 on: October 01, 2019, 11:46:50 AM »
Spot the boat.
Polarstern position 2019-Sep-30 04:00   N 85°06' E 137°48'
Polarview, 20190930T044920, slight contrast adjustment. Click for full resolution.
https://www.polarview.aq/arctic
« Last Edit: October 01, 2019, 12:05:06 PM by uniquorn »

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Re: MOSAiC news
« Reply #45 on: October 01, 2019, 12:16:49 PM »
Polarview 16bit jp2 of yesterday's red triangle area with heavy contrast (saved as jpeg)

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Re: MOSAiC news
« Reply #46 on: October 01, 2019, 12:30:09 PM »
Yep, that's the Polarstern. :D

Great find, Uniquorn! \o/
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uniquorn

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Re: MOSAiC news
« Reply #47 on: October 01, 2019, 02:32:05 PM »
Mosaic buoy data looking tidier today on http://iabp.apl.washington.edu/maps_daily_table.html :)
85.76N must be Akademik Fedorov. PS top left, AF bottom right. Click for full resolution as the thumbnail doesn't really show them. (adaptive contrast applied)

Reassessing that snow depth upthread to ~15cm ?
« Last Edit: October 01, 2019, 02:49:28 PM by uniquorn »

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Re: MOSAiC news
« Reply #48 on: October 01, 2019, 02:49:47 PM »
Oh, is the Polarstern bigger than the Akademik Fedorov?
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Re: MOSAiC news
« Reply #49 on: October 01, 2019, 03:33:08 PM »
PS: Length 117.9 m; beam 25 m; draft 10.7 m.
AF: Length 141 m; beam 17 m.
according to sailwx
maybe it's stealthier ;)
« Last Edit: October 02, 2019, 04:13:02 PM by uniquorn »