Jakob Dörr

🧪🌊 Become a researcher within physical ocenography in the Arctic Ocean & the North Atlantic!
In our series with available positions, next one out is this one connected to the national research program @arcticocean2050.bsky.social
Supervisor: @mariusarthun.bsky.social
Come join us in Bergen!

The Arctic overturning circulation: transformations, pathways and timescales Abstract. The Arctic is the northernmost terminus of the Atlantic Meridional Overturning Circulation and is an important source of the densest waters feeding its lower limb. However, relatively little...

🌊Where and how is dense water in the Arctic formed? In our new paper, we decompose the Arctic overturning circulation (ArMOC), the northernmost part of the AMOC. Check it out 🔽

@bjerknes.uib.no @mariusarthun.bsky.social @kristoferdoos.bsky.social @nansensenteret.bsky.social @noc.ac.uk

By applying a tracking method to both climate models and satellite data, @davyclimate.bsky.social found that sea ice age is a more sensitive indicator of change than ice thickness or volume.

🧪🌊 Read the publication here: agupubs.onlinelibrary.wiley.com/doi/epdf/10....

A Fair Assessment of Sea Ice Age Reduces Bias and Gives New Insight to Arctic Sea Ice Dynamics We applied the same algorithm for diagnosing sea ice age in observations to a climate model for the first time The derived sea ice age reproduces the model dynamics but has much lower bias compar...

We have a new paper out today taking a fresh look at sea ice age, showing how this variable offers new insights into Arctic climate change:
A Fair Assessment of Sea Ice Age Reduces Bias and Gives New Insight to Arctic Sea Ice Dynamics
agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Good news for the Gulf Stream! A study from @unibergen.bsky.social, the Bjerknes Centre and @ox.ac.uk indicates that the Arctic Ocean compensates for less deep water formation farther south. @mariusarthun.bsky.social @ailinbrakstad.bsky.social @jakobdoerr.bsky.social

New Book:
The Barents Sea system
Gateway to the changing Arctic

Happy to contribute to some sections of this exciting book!

fagbokforlaget.no/produkt/9788...

🌊 Interested in a phd position in physical oceanography? Try beautiful Bergen! tinyurl.com/Phd-oceanogr...

Home - Explore The Earth System Planet Earth is more than a giant rock in space. Our planet has an atmosphere and oceans, it has sea ice and ice sheets, and it has… Read more "Home"

From sea ice to the atmosphere, Earth’s systems are more interconnected than you think! Take a tour with this interactive illustration and see how climate models help scientists uncover the mysteries of our planet.🧪

To celebrate #CTDAppreciationDay, here's a video of a ride-along with a CTD in a (biologically active) Norwegian fjord during a student cruise! 🌊

Buoys on Expedition in the Arctic Ocean Two instrument-laden buoys ("Knoll" and "Tott") were recently released north of Svalbard, soon to disappear beneath the ice.

In our project "Overturning circulation in the new Arctic" (ArMOC) we have deployed two Argo floats in the Arctic (north of Svalbard). A short story on the mission of Knoll & Tott here:

bjerknes.uib.no/en/article/n...

With Stefanie Semper, Birgit Rinde and @jakobdoerr.bsky.social

The Barents Sea is a hotspot for ongoing Arctic climate change and could be 7C warmer by 2100. Check out our amazing fact sheets from the Nansen Legacy project! arvenetternansen.com/fact-sheets-...

A good opportunity for a first post. Come work with us!

New study: The northern Barents Sea could be seven degrees warmer in 2050 The Barents Sea is heading toward an ice-free future, researchers report.

The northern Barents Sea could be 7 degrees warmer in 2050. Two scenarios, one a 4 degree increase and the other a 2.5 increase showed similar results.

"One of the main findings is that you can't see a difference between these scenarios in 2050," says researcher Marius Årthun, with UiB and BCCR.🧪🌊

Starting in 2025, March 21 becomes the #WorldDayForGlaciers 🧊. Living in Norway I know the white beauties' magic 🏔️❄️ - being German, I know how it is to lose all of them in the next decade. What are the costs of cultural and environmental heritage for our limitless emissions? #ClimateAction

Jakob Dörr smiling during celebration of his doctoral defence

We have a new doctor in the house! Many congratulations Dr. Jakob Dörr @jakobdoerr.bsky.social, who defended his thesis "Present and future drivers of Arctic sea ice variability" today!
Read his latest publication here:
www.researchgate.net/publication/...

New paper alert: While ice-free conditions in September are now likely unavoidable, with first ice-free days possible within the next decade & likely before 2050, future emissions will determine how frequently & for how long the Arctic will be ice-free. rdcu.be/dApgx

Got some Lagrangian perspective on the flight home from #OSM24

Well done @jakobdoerr.bsky.social 👏

Slides to accompany my poster presentation and coffee

Getting ready for Monday of #OSM24 🌊🔭✨
Come visit my poster on the interaction of subpolar gyre and overturning circulation:
ativsoftware.com/appinfo.php?...

I'm excited for #OSM24! If you are interested in sea-ice variability, come see my talk on Thursday at 9:36 AM about causal links between Barents-Kara sea ice and oceanic and atmospheric drivers. Preprint here: doi.org/10.22541/ess...
@bjerknes.bsky.social

Also happy to meet, hang out, or discuss 🙂

Check out our new paper on the contribution of vapor fluxes to the surface mass balance of the Greenland Ice Sheet! 🧐🤓
tc.copernicus.org/articles/18/...

We find that sublimation is a major driver of the summer SMB in the accumulation zone, removing about a third of the snowfall in June and July. 🌨️