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
Wrapping up fieldwork with some data logger downloads.
That's another 6 months of continuous measurement of water flux into Harrie Wood Cave. 6 more potential recharge events identified.
Thanks to Pauline Treble, 2026 will be the 20th year of long term monitoring at this site.
That's another 6 months of continuous measurement of water flux into Harrie Wood Cave. 6 more potential recharge events identified.
Thanks to Pauline Treble, 2026 will be the 20th year of long term monitoring at this site.
November 26, 2025 at 6:56 PM
Wrapping up fieldwork with some data logger downloads.
That's another 6 months of continuous measurement of water flux into Harrie Wood Cave. 6 more potential recharge events identified.
Thanks to Pauline Treble, 2026 will be the 20th year of long term monitoring at this site.
That's another 6 months of continuous measurement of water flux into Harrie Wood Cave. 6 more potential recharge events identified.
Thanks to Pauline Treble, 2026 will be the 20th year of long term monitoring at this site.
Reposted by Aniket Dhar
Temperature extremes are amongst the most dangerous consequences of climate change. This study shows the (modelled) impact of warming on day-to-day temperature swings.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Global warming intensifies extreme day-to-day temperature changes in mid–low latitudes - Nature Climate Change
Climate change is expected to lead to higher day-to-day temperature variability in mid- to low latitudes. Here the authors show that extreme day-to-day temperature changes have distinct impacts on hum...
www.nature.com
November 25, 2025 at 5:11 PM
Temperature extremes are amongst the most dangerous consequences of climate change. This study shows the (modelled) impact of warming on day-to-day temperature swings.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Aniket Dhar
I presented our latest research on groundwater recharge yesterday to the NSW government water planners for groundwater and coastal syatems. And then led tours to show the team our recharge monitoring sites at Harrie Wood Cave, Yarrangobilly.
November 25, 2025 at 7:05 PM
I presented our latest research on groundwater recharge yesterday to the NSW government water planners for groundwater and coastal syatems. And then led tours to show the team our recharge monitoring sites at Harrie Wood Cave, Yarrangobilly.
Reposted by Aniket Dhar
Join the Laboratory of Tree-Ring Research at the University of Arizona for our 2026 Dendrochronology Intensive Summer Course (DISC)! Spend 3 great weeks (May 18th to June 5, 2026) in the field, lab, and classroom learning first-hand how tree-ring research is done! ltrr.arizona.edu/summerschool
Dendrochronology Intensive Summer Course (DISC) 2026 | Laboratory of Tree-Ring Research
ltrr.arizona.edu
November 24, 2025 at 10:01 PM
Join the Laboratory of Tree-Ring Research at the University of Arizona for our 2026 Dendrochronology Intensive Summer Course (DISC)! Spend 3 great weeks (May 18th to June 5, 2026) in the field, lab, and classroom learning first-hand how tree-ring research is done! ltrr.arizona.edu/summerschool
Reposted by Aniket Dhar
Missed this when it came out (was in the field) - agupubs.onlinelibrary.wiley.com/doi/10.1029/... - For Antarctica, tropical aerosol injection transport more strongly affected by the strength of the polar winds; for extratropical injection the season matters more
Stratospheric Polar Vortex Exerts Different Controls on the Transport of Tropical and Mid‐Latitude Volcanic Aerosols
Volcanic eruptions and extreme wildfire events contribute 67% Antarctic stratospheric aerosol burden over the past two decades Antarctic October stratospheric aerosol anomalies from tropical erup...
agupubs.onlinelibrary.wiley.com
November 24, 2025 at 5:18 PM
Missed this when it came out (was in the field) - agupubs.onlinelibrary.wiley.com/doi/10.1029/... - For Antarctica, tropical aerosol injection transport more strongly affected by the strength of the polar winds; for extratropical injection the season matters more
White Sandhill Crane migration at Whitewater Draw, AZ today morning
November 23, 2025 at 9:43 PM
White Sandhill Crane migration at Whitewater Draw, AZ today morning
Reposted by Aniket Dhar
📢 New paper on the impacts of AMOC collapse on European hydroclimate. 🌊
We find an AMOC collapse would exacerbate drought conditions across Europe, linked to reduced precipitation. In combination with climate change droughts are expected to become more frequent and severe.
doi.org/10.5194/hess...
We find an AMOC collapse would exacerbate drought conditions across Europe, linked to reduced precipitation. In combination with climate change droughts are expected to become more frequent and severe.
doi.org/10.5194/hess...
Changing European hydroclimate under a collapsed AMOC in the Community Earth System Model
Abstract. The Atlantic Meridional Overturning Circulation (AMOC) is expected to weaken or even collapse under anthropogenic climate change. Given the importance of the AMOC in the present-day climate,...
doi.org
November 21, 2025 at 2:41 PM
📢 New paper on the impacts of AMOC collapse on European hydroclimate. 🌊
We find an AMOC collapse would exacerbate drought conditions across Europe, linked to reduced precipitation. In combination with climate change droughts are expected to become more frequent and severe.
doi.org/10.5194/hess...
We find an AMOC collapse would exacerbate drought conditions across Europe, linked to reduced precipitation. In combination with climate change droughts are expected to become more frequent and severe.
doi.org/10.5194/hess...
Reposted by Aniket Dhar
The Himalaya and Tibetan Plateau are only the most *recent* of the big mountain systems to have formed in south-central Asia.
Well before India began to collide with Asia, the Gangdese Volcanic Arc had reached Andes-like proportions, standing ~3.5 km tall.
Well before India began to collide with Asia, the Gangdese Volcanic Arc had reached Andes-like proportions, standing ~3.5 km tall.
High-elevation Tibetan Plateau before India–Eurasia collision recorded by triple oxygen isotopes - Nature Geoscience
The triple oxygen isotope composition of quartz veins indicates that the southern Tibetan Plateau was already around 3.5 km high by 60 million years ago, showing that substantial surface uplift starte...
www.nature.com
November 14, 2025 at 7:47 PM
The Himalaya and Tibetan Plateau are only the most *recent* of the big mountain systems to have formed in south-central Asia.
Well before India began to collide with Asia, the Gangdese Volcanic Arc had reached Andes-like proportions, standing ~3.5 km tall.
Well before India began to collide with Asia, the Gangdese Volcanic Arc had reached Andes-like proportions, standing ~3.5 km tall.
Reposted by Aniket Dhar
🚨 New paper alert! 🚨
The correlation between ENSO and Tropical Cyclone activity in the Pacific has strengthened in the recent decades.
Meanwhile, there is a multidecadal oscillation in the ENSO-Atlantic TCs teleconnection strength.
🔗 dx.doi.org/10.1029/2025...
The correlation between ENSO and Tropical Cyclone activity in the Pacific has strengthened in the recent decades.
Meanwhile, there is a multidecadal oscillation in the ENSO-Atlantic TCs teleconnection strength.
🔗 dx.doi.org/10.1029/2025...
dx.doi.org
November 11, 2025 at 8:51 PM
🚨 New paper alert! 🚨
The correlation between ENSO and Tropical Cyclone activity in the Pacific has strengthened in the recent decades.
Meanwhile, there is a multidecadal oscillation in the ENSO-Atlantic TCs teleconnection strength.
🔗 dx.doi.org/10.1029/2025...
The correlation between ENSO and Tropical Cyclone activity in the Pacific has strengthened in the recent decades.
Meanwhile, there is a multidecadal oscillation in the ENSO-Atlantic TCs teleconnection strength.
🔗 dx.doi.org/10.1029/2025...
Reposted by Aniket Dhar
The #UN today proclaimed The International Day of Caves and Karst! To be celebrated 13th September 2026 for the first time! 😍 @mariabox.bsky.social @pucicu.de @olakwiecien3.bsky.social
unesdoc.unesco.org/ark:/48223/p...
unesdoc.unesco.org/ark:/48223/p...
International Day of Caves and Karst
UNESCO Digital Library
unesdoc.unesco.org
November 12, 2025 at 10:22 PM
The #UN today proclaimed The International Day of Caves and Karst! To be celebrated 13th September 2026 for the first time! 😍 @mariabox.bsky.social @pucicu.de @olakwiecien3.bsky.social
unesdoc.unesco.org/ark:/48223/p...
unesdoc.unesco.org/ark:/48223/p...
Reposted by Aniket Dhar
This is very good reading!
From the archive. An anthropologist explores laughter as a far more complex phenomenon than simple delight—reflecting on its surprising power to disturb and disrupt. Read more: www.sapiens.org/culture/unco...
The Strange Power of Laughter
An anthropologist explores laughter as a far more complex phenomenon than simple delight—reflecting on its surprising power to disturb and disrupt.
www.sapiens.org
November 12, 2025 at 8:16 PM
This is very good reading!
Congrats Georgina !
Flowstones from the Cradle of Humankind in #SouthAfrica reveal no evidence of intrusion.
New work, led by HERI’s Georgina Luti, counters arguments that the flowstones are uniform & intrusive, adding support for their role in dating fossils.
🔗 www.heriuct.co.za/news-content...
New work, led by HERI’s Georgina Luti, counters arguments that the flowstones are uniform & intrusive, adding support for their role in dating fossils.
🔗 www.heriuct.co.za/news-content...
November 12, 2025 at 8:17 PM
Congrats Georgina !
Reposted by Aniket Dhar
Congratulations @sfeakins.bsky.social on becoming the new Editor in Chief of Paleoceanography and Paleoclimatology, and thank you to Matthew Huber for all the years of service that did so much to strengthen this important journal!
AGU Publications is pleased to welcome five new Editors-in-Chief to our journals program in 2026!🎉
We thank the outgoing EiCs for their leadership and contributions during their terms, and offer a warm welcome to their successors!
🔗 buff.ly/PZKSOuC
#AGUPubs #Publishing
We thank the outgoing EiCs for their leadership and contributions during their terms, and offer a warm welcome to their successors!
🔗 buff.ly/PZKSOuC
#AGUPubs #Publishing
Announcing New AGU Journal Editors-in-Chief Starting in 2026 - Eos
AGU is excited to welcome new Editors-in-Chief for five of our journals in 2026.
buff.ly
November 12, 2025 at 6:46 PM
Congratulations @sfeakins.bsky.social on becoming the new Editor in Chief of Paleoceanography and Paleoclimatology, and thank you to Matthew Huber for all the years of service that did so much to strengthen this important journal!
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 !