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
We're hiring a full-time technician to support radiocarbon analyses. If you have some experience with analytical instruments and background in chemistry, earth sciences, archaeology, and/or ecology, this could be the job for you! arizona.csod.com/ux/ats/caree...
Research Technician III, Tree Ring Laboratory
Duties and Responsibilities:Assisting with the meticulous preparation of samples for radiocarbon analysis following established protocols. This includ...
arizona.csod.com
February 5, 2026 at 2:40 PM
We're hiring a full-time technician to support radiocarbon analyses. If you have some experience with analytical instruments and background in chemistry, earth sciences, archaeology, and/or ecology, this could be the job for you! arizona.csod.com/ux/ats/caree...
Reposted by Aniket Dhar
📣 Register & join CESM Paleoclimate Working Group Meeting on Feb 12
Hybrid community meeting on paleo modeling, proxy data, & model–data integration. Talks cover deep-time, isotopes, community efforts & coordination
Register for virtual link www.cesm.ucar.edu/events/worki...
@ncar-cgd.bsky.social
Hybrid community meeting on paleo modeling, proxy data, & model–data integration. Talks cover deep-time, isotopes, community efforts & coordination
Register for virtual link www.cesm.ucar.edu/events/worki...
@ncar-cgd.bsky.social
February 2, 2026 at 4:53 PM
📣 Register & join CESM Paleoclimate Working Group Meeting on Feb 12
Hybrid community meeting on paleo modeling, proxy data, & model–data integration. Talks cover deep-time, isotopes, community efforts & coordination
Register for virtual link www.cesm.ucar.edu/events/worki...
@ncar-cgd.bsky.social
Hybrid community meeting on paleo modeling, proxy data, & model–data integration. Talks cover deep-time, isotopes, community efforts & coordination
Register for virtual link www.cesm.ucar.edu/events/worki...
@ncar-cgd.bsky.social
Reposted by Aniket Dhar
Really excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...
Paleoclimate pattern effects help constrain climate sensitivity and 21st-century warming | PNAS
Paleoclimates provide examples of past climate change that inform estimates of modern
warming from greenhouse-gas emissions, known as Earth’s clima...
www.pnas.org
January 23, 2026 at 3:36 PM
Really excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...
Reposted by Aniket Dhar
Excited to see Dr. Bryan Black's research using dendrochronology to establish an exact date (and season!) of the Electron Mudflow in the Puget Sound/Tacoma/Seattle region featured in the NY Times today! 'If the Volcanic Eruption Doesn’t Scare You, the Mudflow Should' www.nytimes.com/2026/01/16/s...
If the Volcanic Eruption Doesn’t Scare You, the Mudflow Should
www.nytimes.com
January 16, 2026 at 3:16 PM
Excited to see Dr. Bryan Black's research using dendrochronology to establish an exact date (and season!) of the Electron Mudflow in the Puget Sound/Tacoma/Seattle region featured in the NY Times today! 'If the Volcanic Eruption Doesn’t Scare You, the Mudflow Should' www.nytimes.com/2026/01/16/s...
Reposted by Aniket Dhar
🚨New paper out with @alexauderset.bsky.social! We show that the Arabian Sea oxygen minimum zone (OMZ) was better oxygenated during the warm Miocene Climate Optimum than today, but its path to full deoxygenation was slow and complex.
Link to paper: www.nature.com/articles/s43...
Link to paper: www.nature.com/articles/s43...
Contrasting evolution of the Arabian Sea and Pacific Ocean oxygen minimum zones during the Miocene - Communications Earth & Environment
The Arabian Sea and eastern tropical Pacific oxygen minimum zones were better oxygenated during the warm Miocene, but with regional complexities, according to analysis of trace elements and nitro...
www.nature.com
January 16, 2026 at 5:21 PM
🚨New paper out with @alexauderset.bsky.social! We show that the Arabian Sea oxygen minimum zone (OMZ) was better oxygenated during the warm Miocene Climate Optimum than today, but its path to full deoxygenation was slow and complex.
Link to paper: www.nature.com/articles/s43...
Link to paper: www.nature.com/articles/s43...
Reposted by Aniket Dhar
New York Climate Report for December 2025:
🌡The entire state saw a below-average December, driven by a handful of cold air outbreaks.
🌧The Lower Hudson River Valley, NYC, and LI saw a drier than average Dec, while W.NY and the ADKS saw a wetter Dec. Statewide, precipitation was near average.
🌡The entire state saw a below-average December, driven by a handful of cold air outbreaks.
🌧The Lower Hudson River Valley, NYC, and LI saw a drier than average Dec, while W.NY and the ADKS saw a wetter Dec. Statewide, precipitation was near average.
January 14, 2026 at 1:14 AM
New York Climate Report for December 2025:
🌡The entire state saw a below-average December, driven by a handful of cold air outbreaks.
🌧The Lower Hudson River Valley, NYC, and LI saw a drier than average Dec, while W.NY and the ADKS saw a wetter Dec. Statewide, precipitation was near average.
🌡The entire state saw a below-average December, driven by a handful of cold air outbreaks.
🌧The Lower Hudson River Valley, NYC, and LI saw a drier than average Dec, while W.NY and the ADKS saw a wetter Dec. Statewide, precipitation was near average.
Reposted by Aniket Dhar
Excited to share our new paper (w/ @aakashsane.bsky.social @baylorfk.bsky.social) where we used the CESM-LME and information theory to understand Pacific decadal variability! 🌊
link.springer.com/epdf/10.1007...
link.springer.com/epdf/10.1007...
Understanding the characteristics and drivers of Pacific decadal variability in the Community Earth System Model Last Millennium Ensemble
link.springer.com
January 6, 2026 at 4:11 PM
Excited to share our new paper (w/ @aakashsane.bsky.social @baylorfk.bsky.social) where we used the CESM-LME and information theory to understand Pacific decadal variability! 🌊
link.springer.com/epdf/10.1007...
link.springer.com/epdf/10.1007...
Reposted by Aniket Dhar
Has anyone here used the PMIP4 past1000 submissions from IPSL-CM6A-LR or MPI-ESM1-2-LR? And more importantly: could point me to where I could find them?! I only recently learned that they exist but can't find them.
At this stage I'm only after tas (past1000 and the associated historical sim)
tyty
At this stage I'm only after tas (past1000 and the associated historical sim)
tyty
January 5, 2026 at 3:22 AM
Has anyone here used the PMIP4 past1000 submissions from IPSL-CM6A-LR or MPI-ESM1-2-LR? And more importantly: could point me to where I could find them?! I only recently learned that they exist but can't find them.
At this stage I'm only after tas (past1000 and the associated historical sim)
tyty
At this stage I'm only after tas (past1000 and the associated historical sim)
tyty
Reposted by Aniket Dhar
Thrilled to share our new paper in GRL investigating future changes to Indonesias Seas currents using a high resolution climate model (CESM-HR)!
doi.org/10.1029/2025...
doi.org/10.1029/2025...
Remote and Regional Drivers of the Indonesian Throughflow Under Future Warming: Implications for Inter‐Basin Freshwater Transport
Under future warming, Pacific wind changes reduce Indonesian Throughflow surface transport through the Halmahera Sea Future Atlantic Meridional Overturning Circulation decline induces oceanic adj...
doi.org
January 3, 2026 at 4:28 PM
Thrilled to share our new paper in GRL investigating future changes to Indonesias Seas currents using a high resolution climate model (CESM-HR)!
doi.org/10.1029/2025...
doi.org/10.1029/2025...
Reposted by Aniket Dhar
And what better way to celebrate this anniversary than attending the FORAMS 2026 meeting in Amherst this June! Abstract submission is now open: sites.google.com/view/forams2...
January 1, 2026 at 4:24 PM
And what better way to celebrate this anniversary than attending the FORAMS 2026 meeting in Amherst this June! Abstract submission is now open: sites.google.com/view/forams2...
Reposted by Aniket Dhar
Paleoclimatologist Jessica Tierney recently published a global temperature record covering almost the past half-billion years. According to her model, 50 million years ago, inland temperatures approached 122 degrees Fahrenheit. www.quantamagazine.org/climate-extr...
December 29, 2025 at 9:04 PM
Paleoclimatologist Jessica Tierney recently published a global temperature record covering almost the past half-billion years. According to her model, 50 million years ago, inland temperatures approached 122 degrees Fahrenheit. www.quantamagazine.org/climate-extr...
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 !!