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Reposted by Yuxin Zhou

Patrick Rafter @oceanandclimate.bsky.social · 6d

Today, we published a study long in the making on how upper and subsurface tropical Pacific waters responded (and maybe will adjust) to warmer global climate. Here’s the story of how we got here after 15 years. many authors but shout out @jfarmersalmanac.bsky.social
🌊
www.science.org/doi/10.1126/...

Persistent eastern equatorial Pacific Ocean upwelling since the warm Pliocene

Upwelling generates a nutrient-rich “cold tongue” in the eastern equatorial Pacific Ocean (EEP), with impacts on global climate, oceanic biological productivity, and the carbon cycle. The cold tongue ...

www.science.org

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Reposted by Yuxin Zhou

Kau))) @carbon8.bsky.social · 16d

🚨New work🚨 led by Ph.D. student Dipesh Chuphal (IIT Gandhinagar), shows that the recent drying of the Ganga River basin is unprecedented in 1,300 years—more severe than historical famines. This ~multidecadal drying appears forced, but many models do not capture it. ☔️ 🌧️

www.pnas.org/doi/10.1073/...

Time series of standardized streamflow anomaly for the Ganga River from year 700 to 2020 (derived from a hydrological model and from the Monsoon Asia Drought Atlas built from tree rings). The plot shows mostly balanced wet (blue/green bars) and dry (brown bars) years until the 20th century, when the black moving-average line dips sharply after 1990. The 1991–2020 mean (blue horizontal line) is well below the range of previous 1,300 years. Orange dots mark major documented historical droughts, but the recent drying is clearly the most severe.

Observed changes in precipitation and temperature between 1951 and 2020. Spatial distribution of change in (A) annual precipitation (%) and (B) annual mean temperature (°C) between 1951 and 2020 based on the Sen’s slope calculation. Grids with statistically significant trends (P <= 0.05), based on the Mann–Kendall test, are highlighted with stippling. The Inset panels in (A) and (B) represent the interannual variability in precipitation anomaly (%) and temperature (°C) averaged
for the Ganga River Basin (blue boundary). The total change in average precipitation and temperature over the GRB during 1951−2020, estimated using the Sen’s slope, is statistically significant (P-value <= 0.05) based on the Mann–Kendall test.

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Yuxin Zhou @yzhouclimate.bsky.social · Aug 28

Link?

Yuxin Zhou @yzhouclimate.bsky.social · Aug 27

Humpback?

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Reposted by Yuxin Zhou

Alexis Licht @alexislicht.bsky.social · Aug 25

Unbelievable experience with the journal Palaeo3. Our manuscript was rejected because… they couldn’t find a second reviewer, and it had been in their system “too long” (7 weeks), according to the editor. In other words, just to preserve their review-speed metrics, they rejected our submission.

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Yuxin Zhou @yzhouclimate.bsky.social · Aug 14

Many thanks to coauthors, including @cpallone.bsky.social!! Work done @lamont.columbia.edu

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Yuxin Zhou @yzhouclimate.bsky.social · Aug 14

Earth scientists know a lot more about getting out of an ice age than going into one. We report an episode of AMOC slowdown at 115 thousand years ago that's likely astronomically forced (via sea-ice) and coincides with a delayed drawdown of atmospheric CO2 @natcomms.nature.com rdcu.be/eALD1

Abrupt weakening of deep Atlantic circulation at the last glacial inception - Nature Communications

Zhou et al. report an abrupt weakening of the Atlantic Meridional Overturning Circulation at the last glacial inception. The observed circulation slowdown could explain the delayed timing of the atmos...

www.nature.com

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Yuxin Zhou @yzhouclimate.bsky.social · Jul 30

We all know an AMOC slowdown impacts tropical rainfall, but how exactly? DiNezio et al. point to cooling in the tropical Norht Atlantic as the main pathway. Today in Nature: www.nature.com/articles/s41...

Tropical response to ocean circulation slowdown raises future drought risk - Nature

An Atlantic meridional overturning circulation slowdown drives widespread shifts in tropical rainfall through the propagation of high-latitude cooling into the tropical North Atlantic.

www.nature.com

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Yuxin Zhou @yzhouclimate.bsky.social · Jul 19

NCAR is not under NOAA and is not mentioned in the news article www.cpr.org/2025/07/01/p...

Proposed NOAA budget would shutter Boulder’s world-class climate research laboratories

The plan follows through on Project 2025, which called to radically shrink the agency’s research arm.

www.cpr.org

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Reposted by Yuxin Zhou

Jiawei Da @paleoisocw.bsky.social · Jul 19

Our new study is out in @natcomms.nature.com!
We present a glacial CO₂ reconstruction from the Chinese Loess Plateau over the past 2.6 million years and explore what it reveals about climate sensitivity during the Pleistocene.
🔗 rdcu.be/ewIfh

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Yuxin Zhou @yzhouclimate.bsky.social · Jun 4

Great work - congrats!! How does your findings impact the use of the North Atlantic warming hole as a proxy for AMOC strength?

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Yuxin Zhou @yzhouclimate.bsky.social · May 16

I think I just did my part but it's nice to be recognized!

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Reposted by Yuxin Zhou

Nature Geoscience @natgeosci.nature.com · May 6

⚒️ Article: North Atlantic Deep Water formation was only moderately weaker than present during the Last Glacial Period, even when freshwater inputs were high

@paddylaser.bsky.social @unil.bsky.social @fpoeppelmeier.bsky.social @unibe.ch

www.nature.com/articles/s41...

Schematic illustrations showing source water mixing in the Atlantic Basin during Heinrich Stadial 1 and the Last Glacial Maximum

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Reposted by Yuxin Zhou

klehnert55.bsky.social @klehnert55.bsky.social · Apr 18

SESAR2 (www.geosamples.org) is rescuing NOAA's Index of Marine and Lacustrine Geological Samples. The IMLGS will be hosted by SESAR2 in the future.

SESAR2

Welcome to the System For Earth Sample Registration (SESAR²) An Allocating Agent for IGSN

www.geosamples.org

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Reposted by Yuxin Zhou

Jesse Farmer @jfarmersalmanac.bsky.social · Apr 18

Just published open-access in @agu.org's Paleo Paleo: A new foraminifera-bound nitrogen isotope perspective on one of geology's evergreen mysteries: The history of the Central American Seaway agupubs.onlinelibrary.wiley.com/doi/full/10.... (1/a few)...

Early Pliocene Shoaling of the Central American Seaway Reconstructed From Foraminifera‐Bound Nitrogen and Oxygen Isotopes

Foraminifera-bound nitrogen isotopes trace the early Pliocene restriction of nutrient exchange across the Central American Seaway Geochemical data indicate four phases of seaway shoaling between ...

agupubs.onlinelibrary.wiley.com

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Dr. Thomas Ronge @thomasronge.bsky.social · Apr 4

🚨Opening of the Scientific Ocean Drilling Coordination Office (SODCO). The US' IODP successor is a collaboration between @tamu.bsky.social and @lamontearth.bsky.social.

mailchi.mp/ldeo/sodco-a...

Announcement: Opening of U.S. Scientific Ocean Drilling Coordination Office

mailchi.mp

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Yuxin Zhou @yzhouclimate.bsky.social · Mar 6

Extra carbon during the Last Glacial Maximum, for example, so I’d love to know how the two scenarios can be reconciled. Thanks in advance!

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Yuxin Zhou @yzhouclimate.bsky.social · Mar 6

Such a cool study! I have a question: does the AMOC slowdown lead to an expansion of the carbon-rich Antarctic Bottom Water, therefore partially compensating the loss of North Atlantic absorption of anthropogenic CO2? Circulation reorganization has been proposed as a way for ocean to store (1/2)

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Zack Labe @zacklabe.com · Mar 5

Hi - I'd like to share this story of what is happening at NOAA GFDL, where some of my colleagues and I worked until the mass firings at NOAA last week.

"...the birthplace of weather and climate forecasting"

NOAA firings hit the birthplace of weather and climate forecasting

Dismissed researchers were improving severe weather predictions

www.science.org

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Reposted by Yuxin Zhou

Howard Lee @hlee.bsky.social · Feb 28

This paper by Barker et al resolves many details about how Earth’s orbital wobbles caused glacial cycles of expansion & contraction of ice sheets over the last ~800,000 years 🧵 ⚒️🧪 1/11 www.science.org/doi/10.1126/...

Distinct roles for precession, obliquity, and eccentricity in Pleistocene 100-kyr glacial cycles

Identifying the specific roles of precession, obliquity, and eccentricity in glacial-interglacial transitions is hindered by imprecise age control. We circumvent this problem by focusing on the morpho...

www.science.org

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Reposted by Yuxin Zhou

Dr. Rocío Paola Caballero-Gill (she/her/ella) @caballerogill.bsky.social · Feb 19

I bet every single one of you have heard "it takes a village to raise a child".
Maybe you don't know, but it also takes a village to "raise" scientists. People like Margaret have been pivotal in supporting my work as I grew into a scientist, through rich conversations besides funding.
Heartbroken💔

Margaret Fraiser @margaretfraiser.bsky.social · Feb 18

Please let the GEO/EAR community know: Program Directors and Mission Support who’ve been at NSF under two years were just terminated via Zoom. Even those of us whose offer letter stated one probationary year and whose government data states “permanent”.

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MARUM @marumunibremen.bsky.social · Jan 27

Not all adaptation strategies to #climatechange will be sufficient for planktonic #foraminifera to survive, an international team of researchers with #MARUM participation comes to this conclusion in the scientific journal @nature.com ➡️ www.marum.de/en/Climate-c...

@juliemeilland.bsky.social

Planktonic foraminifera are tiny marine organisms that are important for the marine ecosystem. In response to the increasing warming and acidification of the oceans, they are migrating deeper into the sea to preserve their populations. Photo: Sonia Chaabane & Julien Sulpis

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Reposted by Yuxin Zhou

Brian Ricketts @kiwigeolog.bsky.social · Jan 30

Another in the Pioneering Women in Earth Sciences series - Elizabeth Gray (1831-1924) - Scotland’s foremost fossil collector, spent her life in well-worn boots, wielding a hammer over rocky bluffs and rubble in search of Lower Paleozoic specimens www.geological-digressions.com/elizabeth-gr... ⚒️🧪

Elizabeth Gray (1831 - 1924)

Elizabeth Gray, spent a life in dusty boots, wielding a hammer over rocky bluffs in search of Scotland's Lower Paleozoic fossils.

www.geological-digressions.com

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Eric Wolff @wacswain.bsky.social · Jan 29

Antarctic ice shelf kept its cool during the last interglacial period
www.nature.com/articles/d41...
@cambridge-earthsci.bsky.social @ercresearch.bsky.social @royalsociety.org @bas.ac.uk

Antarctic ice shelf kept its cool during the last interglacial period

An ice core suggests that the West Antarctic Ice Sheet lost ice 125,000 years ago, but not to the extent proposed by some scenarios.

www.nature.com

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Arthur Coquereau @arthurcoquereau.bsky.social · Jan 27

Does an increase in AMOC variability signal an imminent tipping point? In a recent article in GRL (@agu.org), authors explore the possibility of false positives (increased variance but no bistability) depending on gyre circulation intensity.
#AMOC #TippingPoint #Climate

doi.org/10.1029/2024...

Slowed Response of Atlantic Meridional Overturning Circulation Not a Robust Signal of Collapse

Critical Slowing Down (CSD) indicators can raise a false alarm of a nonexistent collapse when applied to an idealized Atlantic meridional overturning circulation (AMOC) model Applying CSD to the ...

doi.org

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