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Reposted by Paleoclimate Dynamics

i2B - Into The Blue @i2b-erc.bsky.social · Sep 2

🎉❄️The i2B Expedition Team has reached the North Pole 🚢🌍 Today, the i2B expedition celebrated its halfway point at the most symbolic place imaginable: the North Pole. Read more about our stop: 🔗 arcg.is/0favaf0 @paleodyn.bsky.social @bjerknes.uib.no
📸 @rhewlif.xyz

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Reposted by Paleoclimate Dynamics

i2B - Into The Blue @i2b-erc.bsky.social · Aug 28

💭 Read the reflections of @paleodyn.bsky.social PhD student @alexgag11.bsky.social, who traded screens for the Arctic Ocean. Aboard R/V Kronprins Haakon, he cut open sediment cores holding thousands of years of history and sampled water from 4000m below. 🚢❄️

🔗 arcg.is/0favaf0

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 19

This study paves the way for deeper insights on the causality and co-occurrence of climate change at short timescales, utilizing their intricate combination of statistical and dynamical methods. We are excited to see more studies like this in the future, though definitely not more heatwaves!

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 19

With a novel integration of statistical methods, the authors established both co-variability and causality of the compound influence of atmospheric blocking, exceptional sunshine duration, depleted soil moisture, and elevated nighttime temperatures, in driving this extreme event. 🧵

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 19

This study, authored by Dr. @moniionita.bsky.social and Dr. Viorica Nagavciuc from Paleodyn, Dr. Petru Vaideanu from University of Suceava, and Denis Nichita from University of Bucharest, emphasize the increasing vulnerability of Eastern Europe to extreme heat events 🧵

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 19

Paper Alert 🚨

2024 broke many records of unprecedented heat. The epicenter of extreme warming was definitely Eastern Europe, not just for one reason! If you wanna know the contributors to this event, Dr. @moniionita.bsky.social and co-authors can tell you:

www.nature.com/articles/s44... 🧵

Breaking records under clear skies: the impact of sunshine duration and atmospheric dynamics on the 2024 Eastern European extreme summer temperatures - npj Natural Hazards

npj Natural Hazards - Breaking records under clear skies: the impact of sunshine duration and atmospheric dynamics on the 2024 Eastern European extreme summer temperatures

www.nature.com

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Reposted by Paleoclimate Dynamics

i2B - Into The Blue @i2b-erc.bsky.social · Aug 18

✨ Our first expedition blogs are now live! ✨

🚢 Step aboard the R/V Kronprins Haakon and follow the expedition team as they settle into life at sea and gear up to collect their very first long sediment cores from the Arctic seafloor.

🔗 arcg.is/0favaf0

@paleodyn.bsky.social @bjerknes.uib.no

i2B Arctic Ocean Expedition 2025

Collecting new geological archives that will reveal past Arctic climate secrets

arcg.is

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 15

We are excited to follow our first expedition and invite you to do so with us here at our profile, at @i2b-erc.bsky.social, and at the blog (arcg.is/0favaf0). Safe travels and stay tuned!!

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 15

Our PaleoDyn member, @alexgag11.bsky.social is going to be onboard of the Norwegian RV Kronprins Haakon and we will bring updates here on the expedition through his unique viewpoint. Fun fact? He has already spotted the RV Polarstern around Longyearbyen.

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Paleoclimate Dynamics @paleodyn.bsky.social · Aug 15

Did you know that the i2B (@i2b-erc.bsky.social) Arctic Ocean Expedition is departuring tomorrow to unveil the secrets of the past Arctic greenhouse climates? And you can follow the amazing team of scientistis onboard in the blog created for the expedition:

arcg.is/0favaf0

i2B Arctic Ocean Expedition 2025

Collecting new geological archives that will reveal past Arctic climate secrets

storymaps.arcgis.com

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Paleoclimate Dynamics @paleodyn.bsky.social · Jul 21

This study represents a major milestone in for the next generation of storm-resolving global climate models and addresses near-surface processes and modes of variability in outstanding detail. We invite you all to read this amazing work, published in Earth System Dynamics.

Paleoclimate Dynamics @paleodyn.bsky.social · Jul 21

The simulations were able to resolve climate with local granularity, particularly mesoscale activity. Additionally, the time-slice/transient protocol introduces a significant reduction in computational cost and memory footprint in comparison to regular transient simulations.

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Paleoclimate Dynamics @paleodyn.bsky.social · Jul 21

The authors used the AWI inhouse developed model, AWI-CM3, with an iterative methodology to assess the sensitivity of future climate change projections to ultra-high resolution. The insights gained more than justified the substantial investment in both human and technical resources.

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Paleoclimate Dynamics @paleodyn.bsky.social · Jul 21

Paper Alert 🚨

How about looking at the Earth at a super fine resolution? We made it! In the article led by Dr. Ja-Yeon Moon in collaboration with Paleodyn members, the Earth's future climate and variability was simulated at 9 kilometer global resolution!

Link:
esd.copernicus.org/articles/16/...

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Reposted by Paleoclimate Dynamics

i2B - Into The Blue @i2b-erc.bsky.social · Jul 5

⚠️New study alert: Seasonal sea ice characterized the glacial Arctic-Atlantic gateway over the past 750,000 years www.eurekalert.org/news-release...
@paleodyn.bsky.social

Frozen, but not sealed: Arctic Ocean remained open to life during ice ages

A new study challenges the long-debated theory that a massive, kilometre-thick ice shelf once covered the entire Arctic Ocean. By analysing ocean sediments and running advanced climate models, researc...

www.eurekalert.org

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Paleoclimate Dynamics @paleodyn.bsky.social · May 14

If you want to know more about climate extremes' research in PaleoDyn's group, freel free to follow us and Alessandro's profiles here on bluesky - @alexgag11.bsky.social. There is more interesting research coming up!

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Paleoclimate Dynamics @paleodyn.bsky.social · May 14

The question still remains regarding future climate change, as model results disagree on the ENSO response to anthropogenic forcing in the near- to long-term future. However, this article already gives us essential clues on how MHV events can be affected and the global ecological consequences of it!

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Paleoclimate Dynamics @paleodyn.bsky.social · May 14

The #ENSO influence on #MHVs still challenges the scientific community. The study, led by Jakob Gunnarson from the University of Hawaii, focuses on MHVs since 1960 and reveals that the El Niño event of 2023-2024 significantly contributed to the record-setting MHWs that occurred during this period.

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Paleoclimate Dynamics @paleodyn.bsky.social · May 14

Paper alert! 🚨

Ever wondered how ENSO contributes to Marine Heat Waves #MHVs? In the study conducted in collaboration with PhD candidate Alessandro Gagliardi (@alexgag11.bsky.social), the authors isolated the effect of ENSO in driving SST variability, including MHV extremes!
doi.org/10.1175/BAMS...

Removing ENSO’s influence from global SST variability, with insights into the record-setting marine heatwaves of 2023-2024

Abstract The El Niño-Southern Oscillation (ENSO) is a dominant driver of seasonal-interannual climate variability and has been linked to record-setting extremes such as marine heatwaves (MHWs). Howeve...

doi.org

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Paleoclimate Dynamics @paleodyn.bsky.social · May 9

Furthermore, Yugeng has explored LGM deep water formation focusing on the importance of tidal mixing to the AMOC strength in his publication to the Climate of the Past journal last year. We recommend you also to read this paper!

cp.copernicus.org/articles/20/...

🧵(5/5)

Glacial AMOC shoaling despite vigorous tidal dissipation: vertical stratification matters

Abstract. During the Last Glacial Maximum (LGM), tidal dissipation was about 3-fold higher than today, which could have led to a considerable increase in vertical mixing. This increase might have enha...

cp.copernicus.org

Paleoclimate Dynamics @paleodyn.bsky.social · May 9

This work features a collaboration with Paleodyn scientists Dr. Pengyang Song and Dr. Gerrit Lohmann, and Dr. Xianyao Chen from Ocean University of China.

🧵(4/5)

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Paleoclimate Dynamics @paleodyn.bsky.social · May 9

The authors uses our FESOM2 model with tidal mixing parameterization to derive present-day and LGM quasi-equilibrium simulations. They focus on the Atlantic to derive their analyses and find that sea ice production and mixing rates play an essetial role in AABW strenghtening during LGM!

🧵(3/5)

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Paleoclimate Dynamics @paleodyn.bsky.social · May 9

The AABW is essential for the global ocean ventilation as it travels from the bottom of the Southern Ocean to the other ocean basins! During LGM, its formation is deemed to be amplified, even though the magnitude and mechanisms driving AABW strengthrening are under debate.

🧵(2/5)

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Paleoclimate Dynamics @paleodyn.bsky.social · May 9

Paper Alert! 🚨

PhD candidate Yugeng Chen (@yugengchen.bsky.social) and co-authors explore the mechanisms of enhanced AABW formation during the Last Glacial Maximum (LGM) in their recent publication to GRL!

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

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Mechanisms Driving the Extensive Antarctic Bottom Water in the Glacial Atlantic

Reduced mixing between NADW and AABW preserved AABW's colder, denser properties, allowing its broader expansion during the LGM Simulations show PD sea ice production arises from seasonal variatio...

agupubs.onlinelibrary.wiley.com

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Paleoclimate Dynamics @paleodyn.bsky.social · May 1

We invite you to his oral presentation to session CL4.9 on Friday, 02 May, at 10:45 in room 0.49/50!

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