Paleoclimate Dynamics
@paleodyn.bsky.social
We are the Paleoclimate Dynamics group from the Alfred Wegener Institute! Opinions are our own.
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. 🧵
August 19, 2025 at 1:35 PM
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. 🧵
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.
July 21, 2025 at 11:59 AM
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.
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.
July 21, 2025 at 11:59 AM
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.
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.
July 21, 2025 at 11:59 AM
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.
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/...
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/...
July 21, 2025 at 11:59 AM
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/...
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/...
Developing Earth System Models is essential for climate research as they are to represent more components of the Earth System than climate models of lower complexity. However, it is not an easy task! Dr. Jan Streffing, the developer of AWI-CM3, will show at #EGU25 the work of building AWI-ESM3.
May 1, 2025 at 11:54 AM
Developing Earth System Models is essential for climate research as they are to represent more components of the Earth System than climate models of lower complexity. However, it is not an easy task! Dr. Jan Streffing, the developer of AWI-CM3, will show at #EGU25 the work of building AWI-ESM3.
Heat stress events during the summer are not only a reality but also projected to intensify in magnitude and frequency in the future. Would you like to know what are the mechanisms driving them? Dr. Qiyun Ma (@qiyunma.bsky.social) wil uncover them during his oral presentation at #EGU25!
April 30, 2025 at 8:30 AM
Heat stress events during the summer are not only a reality but also projected to intensify in magnitude and frequency in the future. Would you like to know what are the mechanisms driving them? Dr. Qiyun Ma (@qiyunma.bsky.social) wil uncover them during his oral presentation at #EGU25!
Can you imagine a world without the Antarctic Circumpolar Current? At #EGU25, PhD candidate Hanna Knahl will introduce you the world of the Eocene-Oligocene Transition, around 34 Ma, where the ocean gateways were much different from now! Deep time for real!
April 29, 2025 at 11:52 AM
Can you imagine a world without the Antarctic Circumpolar Current? At #EGU25, PhD candidate Hanna Knahl will introduce you the world of the Eocene-Oligocene Transition, around 34 Ma, where the ocean gateways were much different from now! Deep time for real!
Climate modelling is a powerful laboratory to understanding climate processes at various scales. However, not all models are able to capture the effects of smaller scale perturbations in the Earth System. Our PhD candidate, Alexander Thorneloe, using FESOM2 did a wonderful job at tacking this issue!
April 29, 2025 at 6:02 AM
Climate modelling is a powerful laboratory to understanding climate processes at various scales. However, not all models are able to capture the effects of smaller scale perturbations in the Earth System. Our PhD candidate, Alexander Thorneloe, using FESOM2 did a wonderful job at tacking this issue!
Ice sheets are a pivotal component of our climate system and subject to instabilities due to current and climate change. Here, at PaleoDyn, Dr. Christian Rodehacke has performed a series of simulations with interactive #GrIS and #AIS and will give an oral presentation on them at #EGU25
April 28, 2025 at 6:32 PM
Disentangling the anthropogenic impact to climate from its natural variability is not trivial. However, Dr. Monica Ionita (@moniionita.bsky.social) will show at #EGU25 that the extreme summer temperatures observed in 2023 in Eastern Europe were driven by anthropogenic climate change!
April 25, 2025 at 11:28 AM
Disentangling the anthropogenic impact to climate from its natural variability is not trivial. However, Dr. Monica Ionita (@moniionita.bsky.social) will show at #EGU25 that the extreme summer temperatures observed in 2023 in Eastern Europe were driven by anthropogenic climate change!
Later on Thursday, 01 May, from 19:00 to 20:00, she will give the short course SC1.9: "Being a scientist in the age of AI: Navigating tools, ethics, and challenges", with Dr. Edoardo Martini. This interesting short course will take place in room -2.62!
April 22, 2025 at 11:51 AM
Later on Thursday, 01 May, from 19:00 to 20:00, she will give the short course SC1.9: "Being a scientist in the age of AI: Navigating tools, ethics, and challenges", with Dr. Edoardo Martini. This interesting short course will take place in room -2.62!
Fernanda is also convening session CL4.2 at #EGU25, "Past warm climate lessons from modelling and proxies to navigate into the future", with Dr. Thomas Westerhold and co-conveners on Thursday, 01 May. Orals take place from 08:30–12:30, in room 0.31/32, and posters from 14:00–15:45 in hall X5.
April 22, 2025 at 11:51 AM
Fernanda is also convening session CL4.2 at #EGU25, "Past warm climate lessons from modelling and proxies to navigate into the future", with Dr. Thomas Westerhold and co-conveners on Thursday, 01 May. Orals take place from 08:30–12:30, in room 0.31/32, and posters from 14:00–15:45 in hall X5.
Paleodyn's contribution to #EGU25 on Tuesday, 29 April, starts with the oral presentation of our PhD Candidate, Fernanda Matos (@fdaomatos.bsky.social). She will talk about the calculation of the AMOC in density space, and how it becomes crucial in warmer climates, using our AWI-CM3 model.
April 22, 2025 at 11:51 AM
Paleodyn's contribution to #EGU25 on Tuesday, 29 April, starts with the oral presentation of our PhD Candidate, Fernanda Matos (@fdaomatos.bsky.social). She will talk about the calculation of the AMOC in density space, and how it becomes crucial in warmer climates, using our AWI-CM3 model.
Tree rings are a valuable proxy to paleoclimate. Dr. Viorica Nagavciuc will explain in detail, at #EGU25, how oxygen isotope concentrations in tree rings were used to reconstruct past drought events in central and eastern Europe!
April 18, 2025 at 1:30 PM
Tree rings are a valuable proxy to paleoclimate. Dr. Viorica Nagavciuc will explain in detail, at #EGU25, how oxygen isotope concentrations in tree rings were used to reconstruct past drought events in central and eastern Europe!
The Arctic is undergoing an amplified warming and changes in its climate variability when comparing to the average global temperature. At #EGU25, Yongyue Luo will show us how the Atlantic Multidecadal and Pacific Decadal Oscillations modulate the climate variability in Eurasian sector of the Arctic!
April 18, 2025 at 10:14 AM
The Arctic is undergoing an amplified warming and changes in its climate variability when comparing to the average global temperature. At #EGU25, Yongyue Luo will show us how the Atlantic Multidecadal and Pacific Decadal Oscillations modulate the climate variability in Eurasian sector of the Arctic!
Alessandro is also a co-author in another study together with scientists from ISP-CNR, University of Venice, @iqf-csic.bsky.social, and the University of Padua. The oral presentation will be given by Dr. Scoto at EGU25, in session CL1.2.10, on Wednesday, 30 April, at 12:15–12:25 in room 0.31/32.
April 15, 2025 at 2:45 PM
Alessandro is also a co-author in another study together with scientists from ISP-CNR, University of Venice, @iqf-csic.bsky.social, and the University of Padua. The oral presentation will be given by Dr. Scoto at EGU25, in session CL1.2.10, on Wednesday, 30 April, at 12:15–12:25 in room 0.31/32.
Climate extremes are a rising concern to Europe as they are projected to increase in frequency and magnitude in the future. But what about the past? Alessandro Gagliardi (@alexgag11.bsky.social) will present a poster at #EGU25 showing how ice cores are used to unveil past climate extremes!
April 15, 2025 at 2:45 PM
Climate extremes are a rising concern to Europe as they are projected to increase in frequency and magnitude in the future. But what about the past? Alessandro Gagliardi (@alexgag11.bsky.social) will present a poster at #EGU25 showing how ice cores are used to unveil past climate extremes!
On Thursday, 01 May, at 12:00–12:20 in room 0.31/32, he will talk more about how paleoclimate can be used to understand climate change and variability in climate models. Here at AWI, we have our own models, AWI-CM/ESM, and paleoclimate simulations are essential for their development!
April 14, 2025 at 2:54 PM
On Thursday, 01 May, at 12:00–12:20 in room 0.31/32, he will talk more about how paleoclimate can be used to understand climate change and variability in climate models. Here at AWI, we have our own models, AWI-CM/ESM, and paleoclimate simulations are essential for their development!
In session OS1.8, on Monday, 28 April , at 12:05–12:25, in room 1.61/62, Dr. Lohmann will give an oral presentation on the many lessons we can learn from studying past Arctic warm climates. He is one of the leaders of the exciting @i2b-erc.bsky.social project, that focuses in the Arctic!
April 14, 2025 at 2:54 PM
In session OS1.8, on Monday, 28 April , at 12:05–12:25, in room 1.61/62, Dr. Lohmann will give an oral presentation on the many lessons we can learn from studying past Arctic warm climates. He is one of the leaders of the exciting @i2b-erc.bsky.social project, that focuses in the Arctic!
3. Antarctic ice-shelf cavities adjust the Antarctic Bottom Water formation sites and enhance Southern Ocean dynamics by introducing ice-shelf meltwater.
April 10, 2025 at 12:29 PM
3. Antarctic ice-shelf cavities adjust the Antarctic Bottom Water formation sites and enhance Southern Ocean dynamics by introducing ice-shelf meltwater.
2. Local hydrographic and topographic conditions play a decisive role in an ice-cavity tipping point, characterized by abrupt warm-water intrusion, rapid basal-melt increases, and massive freshwater release.
April 10, 2025 at 12:29 PM
2. Local hydrographic and topographic conditions play a decisive role in an ice-cavity tipping point, characterized by abrupt warm-water intrusion, rapid basal-melt increases, and massive freshwater release.
They reveal that:
1. With Antarctic ice-shelf cavities, high-emission scenario projections demonstrate accelerated Antarctic basal melt and freshwater discharge, which were ignored in previous Earth System Modeling studies!
1. With Antarctic ice-shelf cavities, high-emission scenario projections demonstrate accelerated Antarctic basal melt and freshwater discharge, which were ignored in previous Earth System Modeling studies!
April 10, 2025 at 12:29 PM
They reveal that:
1. With Antarctic ice-shelf cavities, high-emission scenario projections demonstrate accelerated Antarctic basal melt and freshwater discharge, which were ignored in previous Earth System Modeling studies!
1. With Antarctic ice-shelf cavities, high-emission scenario projections demonstrate accelerated Antarctic basal melt and freshwater discharge, which were ignored in previous Earth System Modeling studies!
Oral Presentation: "The CMIP7-PMIP FastTrack abrupt-127k simulation : an opportunity to test Arctic sea ice representation in climate models" (Kageyama et al., from @lsce-ipsl.bsky.social)
Session : Wednesday, 30 April, 11:45–11:55 (CEST), Room 0.31/32
Session : Wednesday, 30 April, 11:45–11:55 (CEST), Room 0.31/32
April 8, 2025 at 12:09 PM
Oral Presentation: "The CMIP7-PMIP FastTrack abrupt-127k simulation : an opportunity to test Arctic sea ice representation in climate models" (Kageyama et al., from @lsce-ipsl.bsky.social)
Session : Wednesday, 30 April, 11:45–11:55 (CEST), Room 0.31/32
Session : Wednesday, 30 April, 11:45–11:55 (CEST), Room 0.31/32