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Author Topic: MOSAiC news  (Read 1335 times)

uniquorn

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

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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/

Polarstern's current location



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: September 12, 2019, 05:01:25 PM by uniquorn »

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
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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 »

blumenkraft

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Re: MOSAiC news
« Reply #5 on: September 12, 2019, 10:00:52 AM »
“You are not entitled to your opinion. You are entitled to your informed opinion. No one is entitled to be ignorant.”

Neven

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

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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

Jim Hunt

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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).

uniquorn

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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.
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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 »

Jim Hunt

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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:

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