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
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...
Reposted by Aniket Dhar
TIL: Someone found piece of the asteroid that killed the dinosaurs in a sediment core from the middle of the Pacific Ocean.
Kyte, F. A meteorite from the Cretaceous/Tertiary boundary. Nature 396, 237–239 (1998). doi.org/10.1038/24322
🌠💥💣
Kyte, F. A meteorite from the Cretaceous/Tertiary boundary. Nature 396, 237–239 (1998). doi.org/10.1038/24322
🌠💥💣
A meteorite from the Cretaceous/Tertiary boundary - Nature
Nature - A meteorite from the Cretaceous/Tertiary boundary
doi.org
December 4, 2025 at 8:49 PM
TIL: Someone found piece of the asteroid that killed the dinosaurs in a sediment core from the middle of the Pacific Ocean.
Kyte, F. A meteorite from the Cretaceous/Tertiary boundary. Nature 396, 237–239 (1998). doi.org/10.1038/24322
🌠💥💣
Kyte, F. A meteorite from the Cretaceous/Tertiary boundary. Nature 396, 237–239 (1998). doi.org/10.1038/24322
🌠💥💣
Reposted by Aniket Dhar
Our paper is published! 🎉🎉🎉
If you want to understand changes in total rainfall under warming, give this a read!
Happy to chat about it with people :)
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
If you want to understand changes in total rainfall under warming, give this a read!
Happy to chat about it with people :)
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
December 4, 2025 at 6:49 PM
Our paper is published! 🎉🎉🎉
If you want to understand changes in total rainfall under warming, give this a read!
Happy to chat about it with people :)
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
If you want to understand changes in total rainfall under warming, give this a read!
Happy to chat about it with people :)
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Excited to be a part of the regional coordinators for this project
Hydroclimate2k will be at #AGU25! Come along to poster PP33C-1090 from 2:15 on Weds 17th to say hi and see what we're up to.
#21daysof2k @pages-ipo.bsky.social
agu.confex.com/agu/agu25/me...
#21daysof2k @pages-ipo.bsky.social
agu.confex.com/agu/agu25/me...
Hydroclimate2k: A New PAGES Database of Hydroclimate Proxy Records for the Common Era
The PAGES 2k Network has provided important context for current global warming,...
agu.confex.com
December 3, 2025 at 11:29 PM
Excited to be a part of the regional coordinators for this project
Reposted by Aniket Dhar
🚨CCRC researchers @drjucker.bsky.social, Laurie Menviel and Valentina Guzmán joined other leading and emerging climate scientists across Australia to produce a new review of the Southern Annular Mode and its impacts. The study just published in @natrevearthenviron.nature.com. doi.org/10.1038/s430...
Southern Annular Mode dynamics, projections and impacts in a changing climate - Nature Reviews Earth & Environment
The Southern Annular Mode (SAM) has shifted towards its positive phase owing to ozone depletion and increasing greenhouse gas concentrations. This Review discusses the dynamics, trends and projections...
doi.org
December 3, 2025 at 12:44 AM
🚨CCRC researchers @drjucker.bsky.social, Laurie Menviel and Valentina Guzmán joined other leading and emerging climate scientists across Australia to produce a new review of the Southern Annular Mode and its impacts. The study just published in @natrevearthenviron.nature.com. doi.org/10.1038/s430...
Reposted by Aniket Dhar
Hi, I'm Joe a 4th year PhD student
@utas.edu.au
who is currently looking for a post-doc!
My research has focused on reconstructing paleo-productivity and iron fertilisation in the Indian sector across the last 100 ka.
Here’s what I've been up to across the last 4 years:
@utas.edu.au
who is currently looking for a post-doc!
My research has focused on reconstructing paleo-productivity and iron fertilisation in the Indian sector across the last 100 ka.
Here’s what I've been up to across the last 4 years:
December 2, 2025 at 10:46 PM
Hi, I'm Joe a 4th year PhD student
@utas.edu.au
who is currently looking for a post-doc!
My research has focused on reconstructing paleo-productivity and iron fertilisation in the Indian sector across the last 100 ka.
Here’s what I've been up to across the last 4 years:
@utas.edu.au
who is currently looking for a post-doc!
My research has focused on reconstructing paleo-productivity and iron fertilisation in the Indian sector across the last 100 ka.
Here’s what I've been up to across the last 4 years:
Reposted by Aniket Dhar
🚨 New manuscript! 🚨
We use speleothem calcium isotopes and Mg/Ca to reconstruct rainfall amount. Turns out central Vietnam was 50 % drier during the LGM 🤯. Climate models agree but most underestimate rainfall change.
www.sciencedirect.com/science/arti...
We use speleothem calcium isotopes and Mg/Ca to reconstruct rainfall amount. Turns out central Vietnam was 50 % drier during the LGM 🤯. Climate models agree but most underestimate rainfall change.
www.sciencedirect.com/science/arti...
Quantifying changes in central Vietnam rainfall amount since the Late Pleistocene
Paleorecords of the Southeast Asian autumn monsoon indicate that global sea-level change drove abrupt shifts in rainfall, yet the magnitude of these c…
www.sciencedirect.com
December 1, 2025 at 2:51 PM
🚨 New manuscript! 🚨
We use speleothem calcium isotopes and Mg/Ca to reconstruct rainfall amount. Turns out central Vietnam was 50 % drier during the LGM 🤯. Climate models agree but most underestimate rainfall change.
www.sciencedirect.com/science/arti...
We use speleothem calcium isotopes and Mg/Ca to reconstruct rainfall amount. Turns out central Vietnam was 50 % drier during the LGM 🤯. Climate models agree but most underestimate rainfall change.
www.sciencedirect.com/science/arti...
Reposted by Aniket Dhar
New publication: how does a collapse of the Atlantic Meridional Overturning Circulation (AMOC) affect carbon and d13C cycles in the ocean?
doi.org/10.1029/2025...
doi.org/10.1029/2025...
doi.org/10.1029/2025...
doi.org/10.1029/2025...
Impact of Atlantic Meridional Overturning Circulation Collapse on Carbon‐13 Components in the Ocean
Simulated collapse of the Atlantic Meridional Overturning Circulation affects atmospheric CO2 ${\text{CO}}_{2}$ and δ13CCO2 ${C}_{\mathit{CO2}}$ Largest effect on ocean δ13CDIC ${C}_{\mathit{DIC}...
doi.org
December 1, 2025 at 8:29 PM
New publication: how does a collapse of the Atlantic Meridional Overturning Circulation (AMOC) affect carbon and d13C cycles in the ocean?
doi.org/10.1029/2025...
doi.org/10.1029/2025...
doi.org/10.1029/2025...
doi.org/10.1029/2025...
Reposted by Aniket Dhar
Mediterranean drying by a positive North Atlantic Oscillation trend over the last 65 years is an extreme outlier in the CMIP6 multimodel ensemble journals.ametsoc.org/view/journal... 'observed Mediterranean drying and NAO trends are at the very limit of what climate model simulations can do'
journals.ametsoc.org
November 30, 2025 at 4:28 PM
Mediterranean drying by a positive North Atlantic Oscillation trend over the last 65 years is an extreme outlier in the CMIP6 multimodel ensemble journals.ametsoc.org/view/journal... 'observed Mediterranean drying and NAO trends are at the very limit of what climate model simulations can do'