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
Parker et al provide a revised model of the ice sheet margin retreat of the Ross Sea sector of Antarctica. They show there was a rapid retreat of ice shelf between about 6900 and 5400 years ago. doi.org/10.1038/s414...
Synchronous mid-Holocene marine and terrestrial deglaciation in the Ross Sea, Antarctica - Nature Communications
Methods used to date a network of marine sediment cores reveal that rapid retreat of the Ross Ice Shelf was contemporaneous with the lowering of nearby outlet glaciers, implicating warm ocean waters a...
doi.org
December 24, 2025 at 3:32 AM
Parker et al provide a revised model of the ice sheet margin retreat of the Ross Sea sector of Antarctica. They show there was a rapid retreat of ice shelf between about 6900 and 5400 years ago. doi.org/10.1038/s414...
Reposted by Aniket Dhar
A new study has examined 5.7 million years of mid latitude rainfall to examine the pattern of hydro climate extremes. 300m lacustrine sediments cores were drilled and analysed for the work.
www.nature.com/articles/s41...
#climatechange #jetstream #hydroclimate #drought #flood #arcticamplification
www.nature.com/articles/s41...
#climatechange #jetstream #hydroclimate #drought #flood #arcticamplification
Westerly jet waviness modulates mid-latitude hydroclimate variability - Nature Communications
This study provides robust evidence that Arctic warming affects precipitation variability in the mid-latitudes by modulating westerly waviness. Under global warming, extreme precipitation events in mi...
www.nature.com
December 22, 2025 at 12:26 PM
A new study has examined 5.7 million years of mid latitude rainfall to examine the pattern of hydro climate extremes. 300m lacustrine sediments cores were drilled and analysed for the work.
www.nature.com/articles/s41...
#climatechange #jetstream #hydroclimate #drought #flood #arcticamplification
www.nature.com/articles/s41...
#climatechange #jetstream #hydroclimate #drought #flood #arcticamplification
Reposted by Aniket Dhar
I had a great time presenting at #AGU25! Grateful for the support of my advisor @kimcobb.bsky.social and amazing @ncar-cgd.bsky.social scientists. NCAR makes my research, and so much other vital climate science, possible.
December 19, 2025 at 8:22 PM
I had a great time presenting at #AGU25! Grateful for the support of my advisor @kimcobb.bsky.social and amazing @ncar-cgd.bsky.social scientists. NCAR makes my research, and so much other vital climate science, possible.
Reposted by Aniket Dhar
It's been a fantastic #AGU25 week for Hydroclimate2k - lots of new H2k friends made at the poster session, SO many amazing Common Era hydroclimate talks, and an H2k lunch so fun that I forgot to take a photo.
A great reminder of what a wonderful global community we have :)
#21daysof2k
A great reminder of what a wonderful global community we have :)
#21daysof2k
December 19, 2025 at 2:54 AM
It's been a fantastic #AGU25 week for Hydroclimate2k - lots of new H2k friends made at the poster session, SO many amazing Common Era hydroclimate talks, and an H2k lunch so fun that I forgot to take a photo.
A great reminder of what a wonderful global community we have :)
#21daysof2k
A great reminder of what a wonderful global community we have :)
#21daysof2k
Reposted by Aniket Dhar
Typically, I forgot to ask someone to take a photo of my #AGU25 talk. But I liked the part where people giggled instead of hurling fruit every time I (mostly accidentally) threw shade on various parts of the community.
December 18, 2025 at 2:19 AM
Typically, I forgot to ask someone to take a photo of my #AGU25 talk. But I liked the part where people giggled instead of hurling fruit every time I (mostly accidentally) threw shade on various parts of the community.
Reposted by Aniket Dhar
AGU25 attendees: Ever failed before? (probably, right?!). Then our panel discussion is for you! Come hear epic fail stories from your peers and maybe even share your own.
Tuesday 16:15-17:45, Room 343
agu.confex.com/agu/agu25/me...
Tuesday 16:15-17:45, Room 343
agu.confex.com/agu/agu25/me...
December 15, 2025 at 12:08 AM
AGU25 attendees: Ever failed before? (probably, right?!). Then our panel discussion is for you! Come hear epic fail stories from your peers and maybe even share your own.
Tuesday 16:15-17:45, Room 343
agu.confex.com/agu/agu25/me...
Tuesday 16:15-17:45, Room 343
agu.confex.com/agu/agu25/me...
Reposted by Aniket Dhar
If you’re attending #AGU25 and like paleoclimate come see my talks tomorrow!
1) Atmospheric River Impacts on the Greenland Ice Sheet through the Last Interglacial (A12D-04; 271 at 11:05 AM)
2) Southern Ocean response to a rapid retreat of the West Antarctic Ice Sheet (PP14A-02; 214 at 4:25 PM)
1) Atmospheric River Impacts on the Greenland Ice Sheet through the Last Interglacial (A12D-04; 271 at 11:05 AM)
2) Southern Ocean response to a rapid retreat of the West Antarctic Ice Sheet (PP14A-02; 214 at 4:25 PM)
December 15, 2025 at 1:55 AM
If you’re attending #AGU25 and like paleoclimate come see my talks tomorrow!
1) Atmospheric River Impacts on the Greenland Ice Sheet through the Last Interglacial (A12D-04; 271 at 11:05 AM)
2) Southern Ocean response to a rapid retreat of the West Antarctic Ice Sheet (PP14A-02; 214 at 4:25 PM)
1) Atmospheric River Impacts on the Greenland Ice Sheet through the Last Interglacial (A12D-04; 271 at 11:05 AM)
2) Southern Ocean response to a rapid retreat of the West Antarctic Ice Sheet (PP14A-02; 214 at 4:25 PM)
Reposted by Aniket Dhar
This is the only parody song about geophysical fluid dynamics you’ll ever need:
urldefense.com/v3/__https:/...
urldefense.com/v3/__https:/...
Call Me Charney: A GFD Parody
This was so fun to make!! #lamontdoherty #lamont #atmosphere #science #charney #GFS #vallis #geostrophic #quasigeostrophic #hydrostatic #rossby
urldefense.com
December 12, 2025 at 8:29 PM
This is the only parody song about geophysical fluid dynamics you’ll ever need:
urldefense.com/v3/__https:/...
urldefense.com/v3/__https:/...
Reposted by Aniket Dhar
An atmospheric river continues to drench the Pacific Northwest in heavy rainfall, resulting in a widespread flooding threat across western Washington.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
December 10, 2025 at 11:40 PM
An atmospheric river continues to drench the Pacific Northwest in heavy rainfall, resulting in a widespread flooding threat across western Washington.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
Reposted by Aniket Dhar
Have you been following @profmattjones.bsky.social and @raindrop-herder.bsky.social who are sharing insights into the work of the PAGES 2k Network working group?
Drop them a follow to see what else they have in store during the #21daysof2k!
Website: pastglobalchanges.org/science/wg/2...
Drop them a follow to see what else they have in store during the #21daysof2k!
Website: pastglobalchanges.org/science/wg/2...
December 10, 2025 at 9:50 AM
Have you been following @profmattjones.bsky.social and @raindrop-herder.bsky.social who are sharing insights into the work of the PAGES 2k Network working group?
Drop them a follow to see what else they have in store during the #21daysof2k!
Website: pastglobalchanges.org/science/wg/2...
Drop them a follow to see what else they have in store during the #21daysof2k!
Website: pastglobalchanges.org/science/wg/2...
Reposted by Aniket Dhar
Did you know the current Hydroclimate2k project isn't the first time PAGES 2k has dipped a toe into understanding global hydroclimate? In 2016, researchers gathered in Palisades, USA to discuss data-model comparisons of Common Era hydroclimate. Read about it here: pages2kpmip3.github.io #21daysof2k
December 10, 2025 at 11:33 PM
Did you know the current Hydroclimate2k project isn't the first time PAGES 2k has dipped a toe into understanding global hydroclimate? In 2016, researchers gathered in Palisades, USA to discuss data-model comparisons of Common Era hydroclimate. Read about it here: pages2kpmip3.github.io #21daysof2k
Reposted by Aniket Dhar
North American ice sheets contributed a lot more to sea level rise during 7 to 9 thousand years ago than previously thought, according to Mukherjee et al. (2025) doi.org/10.1038/s415...
Sea-level rise at the end of the last deglaciation dominated by North American ice sheets - Nature Geoscience
The melting of the last remnants of the North American ice sheets in the early Holocene led to 14 m of global sea-level rise, higher than prior estimates, according to proxy constraints from the Missi...
doi.org
December 10, 2025 at 6:35 PM
North American ice sheets contributed a lot more to sea level rise during 7 to 9 thousand years ago than previously thought, according to Mukherjee et al. (2025) doi.org/10.1038/s415...
Reposted by Aniket Dhar
Measuring rainfall recharge thresholds allows researchers to assess how much rainfall is needed to recharge groundwater and when this recharge occurs, write @andy-baker.bsky.social + colleagues at CSIRO, UNSW, @flindersuniversity.bsky.social, & @deakinuniversity.bsky.social
eos.org/science-upda...
eos.org/science-upda...
When Does Rainfall Become Recharge? - Eos
Counting drips in caves is helping to reveal how much precipitation is needed to start refilling underground aquifers.
eos.org
December 4, 2025 at 3:34 PM
Measuring rainfall recharge thresholds allows researchers to assess how much rainfall is needed to recharge groundwater and when this recharge occurs, write @andy-baker.bsky.social + colleagues at CSIRO, UNSW, @flindersuniversity.bsky.social, & @deakinuniversity.bsky.social
eos.org/science-upda...
eos.org/science-upda...
Great stuff !!
Excited for this paper to be out! With the collaboration of met services from Central America, we evaluate in detail the biases in gridded products that arise from the underlying station data, and the effect this has on the apparent emergence of regional drying trends. Thanks to all the co-authors!
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
December 10, 2025 at 7:52 PM
Great stuff !!
Reposted by Aniket Dhar
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Impacts of Spatial and Temporal Station Availability on Gridded Precipitation Products in Central America
There are significant differences between gridded precipitation products in Central America in both variability and trends CHIRPS consistently outperforms Global Precipitation Climatology Centre ...
agupubs.onlinelibrary.wiley.com
December 10, 2025 at 2:13 PM
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Aniket Dhar
📢Submit to our EGU session!📢
We are organizing a session at EGU 2026 in Vienna, with a focus on climate sensitivity, radiative feedbacks and the pattern effect!
If you work on anything related to climate sensitivity, we'd love to have you! 🥳🥳🥳 Submit soon! :)
We are organizing a session at EGU 2026 in Vienna, with a focus on climate sensitivity, radiative feedbacks and the pattern effect!
If you work on anything related to climate sensitivity, we'd love to have you! 🥳🥳🥳 Submit soon! :)
December 9, 2025 at 7:54 PM
📢Submit to our EGU session!📢
We are organizing a session at EGU 2026 in Vienna, with a focus on climate sensitivity, radiative feedbacks and the pattern effect!
If you work on anything related to climate sensitivity, we'd love to have you! 🥳🥳🥳 Submit soon! :)
We are organizing a session at EGU 2026 in Vienna, with a focus on climate sensitivity, radiative feedbacks and the pattern effect!
If you work on anything related to climate sensitivity, we'd love to have you! 🥳🥳🥳 Submit soon! :)
Reposted by Aniket Dhar
Check out @cpallone.bsky.social et al. (2025) in QSR, which reconstructs eastern equatorial Pacific thermocline response to orbital forcing. Exciting to see research I contributed to for my undergrad thesis now published!!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Orbital forcing of the eastern equatorial Pacific thermocline in the late Pleistocene
Eastern equatorial Pacific thermocline depth is an important component of the tropical Pacific's coupled ocean-atmosphere system and varies across El …
www.sciencedirect.com
December 9, 2025 at 3:11 PM
Check out @cpallone.bsky.social et al. (2025) in QSR, which reconstructs eastern equatorial Pacific thermocline response to orbital forcing. Exciting to see research I contributed to for my undergrad thesis now published!!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Aniket Dhar
Calling early career researchers!📢
At #AGU25, learn how to craft a paper, from outlining to creating accessible figures. Engage with editors and get insights on manuscript submissions and the peer review process.
🔗 buff.ly/0toa7LR
#AGUPubs #EarlyCareer #PeerReview
At #AGU25, learn how to craft a paper, from outlining to creating accessible figures. Engage with editors and get insights on manuscript submissions and the peer review process.
🔗 buff.ly/0toa7LR
#AGUPubs #EarlyCareer #PeerReview
December 8, 2025 at 10:01 PM
Calling early career researchers!📢
At #AGU25, learn how to craft a paper, from outlining to creating accessible figures. Engage with editors and get insights on manuscript submissions and the peer review process.
🔗 buff.ly/0toa7LR
#AGUPubs #EarlyCareer #PeerReview
At #AGU25, learn how to craft a paper, from outlining to creating accessible figures. Engage with editors and get insights on manuscript submissions and the peer review process.
🔗 buff.ly/0toa7LR
#AGUPubs #EarlyCareer #PeerReview
Reposted by Aniket Dhar
One of the current flagship activities of PAGES 2k is compilation of the Hydroclimate2k database. This map shows records currently being assessed for inclusion, with more records being added by a global team of project members.
Read more here: agu.confex.com/agu/agu25/me...
#21daysof2k
Read more here: agu.confex.com/agu/agu25/me...
#21daysof2k
December 7, 2025 at 10:58 PM
One of the current flagship activities of PAGES 2k is compilation of the Hydroclimate2k database. This map shows records currently being assessed for inclusion, with more records being added by a global team of project members.
Read more here: agu.confex.com/agu/agu25/me...
#21daysof2k
Read more here: agu.confex.com/agu/agu25/me...
#21daysof2k
Reposted by Aniket Dhar
Back to depressing everyone.
We are still trying to figure out exactly how much "safe(ish) space" we still have with athmospheric CO2 to keep temperatures in the "suitable for human habitation" zone. This study tries to narrow it down: between 251 and 666 Gt.🧪
Link: www.cell.com/one-earth/fu...
We are still trying to figure out exactly how much "safe(ish) space" we still have with athmospheric CO2 to keep temperatures in the "suitable for human habitation" zone. This study tries to narrow it down: between 251 and 666 Gt.🧪
Link: www.cell.com/one-earth/fu...
December 7, 2025 at 4:09 PM
Back to depressing everyone.
We are still trying to figure out exactly how much "safe(ish) space" we still have with athmospheric CO2 to keep temperatures in the "suitable for human habitation" zone. This study tries to narrow it down: between 251 and 666 Gt.🧪
Link: www.cell.com/one-earth/fu...
We are still trying to figure out exactly how much "safe(ish) space" we still have with athmospheric CO2 to keep temperatures in the "suitable for human habitation" zone. This study tries to narrow it down: between 251 and 666 Gt.🧪
Link: www.cell.com/one-earth/fu...
If you are at #AGU25 I shall be presenting a new reconstruction on Indian Summer Monsoon over the last millennium using speleothem records.
agu.confex.com/agu/agu25/me...
agu.confex.com/agu/agu25/me...
Has Industrial-Era Warming Already Triggered Thermodynamic Amplification of Indian Summer Monsoon Intensity?
How have natural variability and anthropogenic forcing shaped Indian Summer Mon...
agu.confex.com
December 7, 2025 at 6:27 PM
If you are at #AGU25 I shall be presenting a new reconstruction on Indian Summer Monsoon over the last millennium using speleothem records.
agu.confex.com/agu/agu25/me...
agu.confex.com/agu/agu25/me...
Reposted by Aniket Dhar
Benthic forams in the news www.nytimes.com/2025/12/05/c...
What Scientists Found When a Deep Sea Mining Company Invited Them In
www.nytimes.com
December 6, 2025 at 4:36 PM
Benthic forams in the news www.nytimes.com/2025/12/05/c...
Reposted by Aniket Dhar
Regarding news articles today on a new paper linking the Black Death to post-volcanic cooling in the Mediterranean, our reconstruction shows it was cooler during that time (e.g. 1346 CE, following a 1345 tropical eruption) but not severely so (summer temperature anomalies vs. 1338-1340 CE baseline)
December 4, 2025 at 10:33 PM
Regarding news articles today on a new paper linking the Black Death to post-volcanic cooling in the Mediterranean, our reconstruction shows it was cooler during that time (e.g. 1346 CE, following a 1345 tropical eruption) but not severely so (summer temperature anomalies vs. 1338-1340 CE baseline)
Reposted by Aniket Dhar
U of A researchers are using tree-ring science to study ancient solar storms and major earthquakes. With the TIME Lab’s advanced radiocarbon techniques, the team is uncovering patterns that may improve predictions of space-weather hazards and seismic risks. More: tinyurl.com/5x3mmakh
Unraveling the mysteries of ancient solar storms and earthquakes
Tree-ring and planetary scientists are preparing for the big natural events thanks to a Big Idea Challenge grant and a new laboratory.
tinyurl.com
December 3, 2025 at 5:34 PM
U of A researchers are using tree-ring science to study ancient solar storms and major earthquakes. With the TIME Lab’s advanced radiocarbon techniques, the team is uncovering patterns that may improve predictions of space-weather hazards and seismic risks. More: tinyurl.com/5x3mmakh
Reposted by Aniket Dhar
🚨 New job alert! 🚨
Want to work with me? We're searching for an open-rank, tenure-track faculty position at the University of Arizona in Hydrology & Atmospheric Sciences!
Desired expertise is radar meteorology, broadly defined, with a focus on mesoscale phenomena.
arizona.csod.com/ux/ats/caree...
Want to work with me? We're searching for an open-rank, tenure-track faculty position at the University of Arizona in Hydrology & Atmospheric Sciences!
Desired expertise is radar meteorology, broadly defined, with a focus on mesoscale phenomena.
arizona.csod.com/ux/ats/caree...
Assistant, Associate, or Full Professor, Hydrology and Atmospheric Sciences (T/TE)
Research Focus: The successful candidate will be expected to develop and maintain an externally funded and internationally recognized research program...
arizona.csod.com
December 4, 2025 at 11:52 PM
🚨 New job alert! 🚨
Want to work with me? We're searching for an open-rank, tenure-track faculty position at the University of Arizona in Hydrology & Atmospheric Sciences!
Desired expertise is radar meteorology, broadly defined, with a focus on mesoscale phenomena.
arizona.csod.com/ux/ats/caree...
Want to work with me? We're searching for an open-rank, tenure-track faculty position at the University of Arizona in Hydrology & Atmospheric Sciences!
Desired expertise is radar meteorology, broadly defined, with a focus on mesoscale phenomena.
arizona.csod.com/ux/ats/caree...