Aniket Dhar
@paleocaves.bsky.social
From Kolkata, India | PhD candidate at University of Arizona | Speleothems | Indian Monsoons and Paleoclimate | Born 366 ppm CO2
Reposted by Aniket Dhar
Cool use of a clumped isotopologue in wood! - Isotopic evidence for elevated photorespiration during the last glacial period www.nature.com/articles/s41...
Isotopic evidence for elevated photorespiration during the last glacial period - Nature Geoscience
Low carbon dioxide levels during the last glacial period enhanced photorespiration in trees across North America, indicating a decline in land plant productivity, according to measurements of clumped ...
www.nature.com
November 6, 2025 at 6:01 PM
Cool use of a clumped isotopologue in wood! - Isotopic evidence for elevated photorespiration during the last glacial period www.nature.com/articles/s41...
Reposted by Aniket Dhar
Quick writeup about our recent paper on atmospheric rivers during the Last Interglacial in @eos.org!
eos.org/editor-highl...
eos.org/editor-highl...
Atmospheric Rivers Shaped Greenland’s Ancient Ice - Eos
New simulations reveal how atmospheric rivers influenced Greenland’s ice sheet during the Last Interglacial—offering clues to future melt in a warming world.
eos.org
November 3, 2025 at 7:31 PM
Quick writeup about our recent paper on atmospheric rivers during the Last Interglacial in @eos.org!
eos.org/editor-highl...
eos.org/editor-highl...
Reposted by Aniket Dhar
Nice analyses by Eden Markovitz and Nathan Steiger on recent persistent drought for Easter Island (Rapa Nui). Indeed, the island had one of the more severe future drying trends in our 2016 paper (Karnauskas et al. www.nature.com/articles/ncl...) agupubs.onlinelibrary.wiley.com/doi/10.1029/...
October 30, 2025 at 11:24 PM
Nice analyses by Eden Markovitz and Nathan Steiger on recent persistent drought for Easter Island (Rapa Nui). Indeed, the island had one of the more severe future drying trends in our 2016 paper (Karnauskas et al. www.nature.com/articles/ncl...) agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Aniket Dhar
Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊
www.jobs.ac.uk/job/DPG117/p...
www.jobs.ac.uk/job/DPG117/p...
Postdoctoral Research Associate at University of Liverpool
Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!
www.jobs.ac.uk
October 29, 2025 at 5:38 PM
Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊
www.jobs.ac.uk/job/DPG117/p...
www.jobs.ac.uk/job/DPG117/p...
Reposted by Aniket Dhar
PNAS: Six-million-year-old ice discovered in Antarctica offers unprecedented window into a warmer Earth via our NSF COLDEX & US Antarctic Program. ❄️ www.pnas.org/doi/10.1073/...
October 28, 2025 at 9:44 PM
PNAS: Six-million-year-old ice discovered in Antarctica offers unprecedented window into a warmer Earth via our NSF COLDEX & US Antarctic Program. ❄️ www.pnas.org/doi/10.1073/...
Reposted by Aniket Dhar
This is cool, 6 million year old ice from Antartica with inferred temperature ~12°C warmer than the late Pleistocene. No CO2 level yet! (That will be highly anticipated!)
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
October 28, 2025 at 8:51 PM
This is cool, 6 million year old ice from Antartica with inferred temperature ~12°C warmer than the late Pleistocene. No CO2 level yet! (That will be highly anticipated!)
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
An interesting paper exploring the early Neanderthal climate connection. This paper suggests that long-distance movement of Neanderthals would have been facilitated by periods of favorable climate. doi.org/10.1073/pnas...
A new late Neanderthal from Crimea reveals long-distance connections across Eurasia | PNAS
The Crimean Peninsula contains several important Middle and Upper Paleolithic sites,
including Starosele, Kabazi II, and Siuren I. The region has b...
doi.org
October 28, 2025 at 11:12 PM
An interesting paper exploring the early Neanderthal climate connection. This paper suggests that long-distance movement of Neanderthals would have been facilitated by periods of favorable climate. doi.org/10.1073/pnas...
Reposted by Aniket Dhar
Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Resolution and Frequency‐Dependent Climate Signals in an Arctic Tree‐Ring Temperature Reconstruction of the Last Millennium
Tree-ring density measurement resolution affects low-frequency trends in temperature reconstructions High-resolution anatomical maximum latewood density has stronger correlations with instrumenta...
agupubs.onlinelibrary.wiley.com
October 28, 2025 at 3:42 PM
Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Aniket Dhar
⏰New paper⏰
Very excited to share our more recent paper published today in @nature.com Communications, where we show based on #clumped #isotope measurements in a giant sea #snail 🐚 that Europe experienced a monsoon-like climate during the #Eocene high-CO2 period.
www.nature.com/articles/s41...
Very excited to share our more recent paper published today in @nature.com Communications, where we show based on #clumped #isotope measurements in a giant sea #snail 🐚 that Europe experienced a monsoon-like climate during the #Eocene high-CO2 period.
www.nature.com/articles/s41...
A European monsoon-like climate in a warmhouse world - Nature Communications
Daily climate 45 million years ago is reconstructed using fossil snail shells, revealing monsoon-like conditions in Europe. The findings help predict how future warming could affect rainfall and seaso...
www.nature.com
October 28, 2025 at 12:13 PM
⏰New paper⏰
Very excited to share our more recent paper published today in @nature.com Communications, where we show based on #clumped #isotope measurements in a giant sea #snail 🐚 that Europe experienced a monsoon-like climate during the #Eocene high-CO2 period.
www.nature.com/articles/s41...
Very excited to share our more recent paper published today in @nature.com Communications, where we show based on #clumped #isotope measurements in a giant sea #snail 🐚 that Europe experienced a monsoon-like climate during the #Eocene high-CO2 period.
www.nature.com/articles/s41...
Reposted by Aniket Dhar
Our new study finds that the upper atmosphere is becoming more sheared and less stratified because of climate change. Both these changes are making the air less stable and more conducive to turbulence.
Published in the November issue of Journal of the Atmospheric Sciences.
doi.org/10.1175/JAS-...
Published in the November issue of Journal of the Atmospheric Sciences.
doi.org/10.1175/JAS-...
October 14, 2025 at 5:05 PM
Our new study finds that the upper atmosphere is becoming more sheared and less stratified because of climate change. Both these changes are making the air less stable and more conducive to turbulence.
Published in the November issue of Journal of the Atmospheric Sciences.
doi.org/10.1175/JAS-...
Published in the November issue of Journal of the Atmospheric Sciences.
doi.org/10.1175/JAS-...
Reposted by Aniket Dhar
#S42025 is grateful to all the instructors who took out time from their busy schedule and came to join us. Also not to forget who joined us online.
Thanks for sharing your experience in the field.
Thanks for sharing your experience in the field.
October 23, 2025 at 12:55 AM
#S42025 is grateful to all the instructors who took out time from their busy schedule and came to join us. Also not to forget who joined us online.
Thanks for sharing your experience in the field.
Thanks for sharing your experience in the field.
Couldn’t have asked for a better talk
@carbon8.bsky.social !
@carbon8.bsky.social !
Up next we have Dr. Kaustubh Thirumalai from the University of Arizona talking about linking speleothem records and climate models to understand atmospheric dynamics
October 23, 2025 at 12:56 AM
Couldn’t have asked for a better talk
@carbon8.bsky.social !
@carbon8.bsky.social !
Reposted by Aniket Dhar
Next we have Prof. Heather Stoll from ETH Zurich talking about marine- speleothem record connections
October 22, 2025 at 9:29 AM
Next we have Prof. Heather Stoll from ETH Zurich talking about marine- speleothem record connections
Reposted by Aniket Dhar
The late 1450s eruption (eruptions?) continues to be an odd one www.nature.com/articles/s43...
Origin of the 1458/59 CE volcanic eruption revealed through analysis of glass shards in the firn core from Antarctic Vostok station - Communications Earth & Environment
The 1458/59 CE cryptotephra in the Antarctic Vostok Station firn core shows a bimodal distribution of dacite and rhyolite, sourced from the Kuwae and potentially an unrecorded southern high-latitude e...
www.nature.com
October 22, 2025 at 12:23 AM
The late 1450s eruption (eruptions?) continues to be an odd one www.nature.com/articles/s43...
@jonbakerocean.bsky.social talking about this today in #S42025 - Amazing work and congratulations to the entire team !
Amazing such archives were preserved…
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems - Nature Geoscience
The Late Miocene terrestrial climate in eastern North Greenland displayed elevated temperatures at moderate atmospheric CO2 levels and was highly variable, reflecting the shifting orbital and ocean ci...
www.nature.com
October 21, 2025 at 10:12 PM
@jonbakerocean.bsky.social talking about this today in #S42025 - Amazing work and congratulations to the entire team !
Reposted by Aniket Dhar
Amazing such archives were preserved…
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems - Nature Geoscience
The Late Miocene terrestrial climate in eastern North Greenland displayed elevated temperatures at moderate atmospheric CO2 levels and was highly variable, reflecting the shifting orbital and ocean ci...
www.nature.com
October 21, 2025 at 7:15 PM
Amazing such archives were preserved…
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Reposted by Aniket Dhar
New paper out on @natcomms.nature.com!
We found recurring deep ocean oxygen minimum events in the Pacific Southern Ocean during Marine Isotope Stage 11, that are linked with perturbed Antarctic Bottom Water formation driven by West Antarctic Ice Sheet destabilization. www.nature.com/articles/s41...
We found recurring deep ocean oxygen minimum events in the Pacific Southern Ocean during Marine Isotope Stage 11, that are linked with perturbed Antarctic Bottom Water formation driven by West Antarctic Ice Sheet destabilization. www.nature.com/articles/s41...
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11 - Nature Communications
Recurring deep ocean oxygen minimum events occur in the Pacific Southern Ocean during the warm climate interval Marine Isotope Stage 11. They are linked with perturbed Antarctic Bottom Water formation...
www.nature.com
October 21, 2025 at 6:52 AM
New paper out on @natcomms.nature.com!
We found recurring deep ocean oxygen minimum events in the Pacific Southern Ocean during Marine Isotope Stage 11, that are linked with perturbed Antarctic Bottom Water formation driven by West Antarctic Ice Sheet destabilization. www.nature.com/articles/s41...
We found recurring deep ocean oxygen minimum events in the Pacific Southern Ocean during Marine Isotope Stage 11, that are linked with perturbed Antarctic Bottom Water formation driven by West Antarctic Ice Sheet destabilization. www.nature.com/articles/s41...
Reposted by Aniket Dhar
🌊 Proxy data + models show the AMOC was shallow during the last ice age, similar to projections for future warming. Its depth is set mainly by AABW density.
The Southern Ocean plays a key role in AMOC strength across climate states.
www.nature.com/articles/s41...
The Southern Ocean plays a key role in AMOC strength across climate states.
www.nature.com/articles/s41...
Southern Ocean influence on Atlantic Meridional Overturning Circulation across climate states - Nature Communications
The properties of the Antarctic Bottom Water largely determine the Atlantic Meridional Overturning Circulation’s depth and strength across climate states by affecting the routes via which North Atlant...
www.nature.com
October 20, 2025 at 5:34 AM
🌊 Proxy data + models show the AMOC was shallow during the last ice age, similar to projections for future warming. Its depth is set mainly by AABW density.
The Southern Ocean plays a key role in AMOC strength across climate states.
www.nature.com/articles/s41...
The Southern Ocean plays a key role in AMOC strength across climate states.
www.nature.com/articles/s41...
Reposted by Aniket Dhar
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11 - Nature Communications
Recurring deep ocean oxygen minimum events occur in the Pacific Southern Ocean during the warm climate interval Marine Isotope Stage 11. They are linked with perturbed Antarctic Bottom Water formation...
www.nature.com
October 19, 2025 at 4:55 AM
Southern Ocean evidence for recurring West Antarctic Ice Sheet destabilization during Marine Isotope Stage 11
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Jay was on my PhD committee and taught me carbonate geochemistry, and to approach my speleothem problems with patience and depth. I’m deeply grateful for the time I got to learn from him. His influence will always remain a part of my journey. Will miss you, Jay!
A sad piece of news: I am heartbroken to learn that Jay Quade passed away today—a profound loss for our geoscience community. Jay was an inspirational scientist, an exemplary colleague, and an extraordinary human being.
I’ll miss you, Jay! 😞
I’ll miss you, Jay! 😞
V v glad to see Prof. Jay Quade—a most wonderful colleague and someone I am lucky to call my mentor—be inducted into the National Academy of Sciences.
October 18, 2025 at 1:21 AM
Jay was on my PhD committee and taught me carbonate geochemistry, and to approach my speleothem problems with patience and depth. I’m deeply grateful for the time I got to learn from him. His influence will always remain a part of my journey. Will miss you, Jay!
Reposted by Aniket Dhar
