Kau)))

Southern Ocean Vertical Carbon Stratification Across the Mid‐Pleistocene Transition Breakdowns of Southern Ocean carbon isotope stratification occur at multiple glacial terminations back to at least 1.55 million years ago An increasingly efficient Southern Ocean biological pump ...

Fantastic work by Aidan Starr, @ianhall.bsky.social & colleagues published in Paleo Paleo yesterday: Subsurface-to-deep C isotope gradients in the Southern Ocean across the MPT! agupubs.onlinelibrary.wiley.com/doi/10.1029/...

“The authors claim these are spherule fragments identified as cosmic impact indicators. During expert consultation, these have been identified as marine foraminifera.”

💀

Global and regional Pleistocene benthic δ18O stacks with a comparison of different age modeling strategies Abstract. Constructing accurate age models for Pleistocene marine sediments is crucial for our understanding of glacial-interglacial cycles and other climatic processes. Benthic foraminiferal δ18O sta...

A suite of benthic δ18O stacks intended as updates to the LR04 has been published. We compiled new data, updated the chronology, and provided regional stacks. gchron.copernicus.org/articles/8/8...

Happy birthday @tinysnekcomics.bsky.social !!

Starting my academic reading this year with a fascinating study documenting the frequency of tropical cyclones in the South China Sea over the past ~650 years. We need more of this type of data to understand extreme weather patterns and their relationship with climate.

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

Deglaciation of the Prudhoe Dome in northwestern Greenland in response to Holocene warming - Nature Geoscience The ~500-metre-thick Prudhoe Dome in northwestern Greenland completely deglaciated 7,000 years ago, highlighting the sensitivity of the ice sheet to mid-Holocene warming, according to luminescence and...

The Prudhoe Dome, currently a 500m-thick ice dome attached to the northwestern Greenland Ice Sheet, completely melted away ~ 7,000 years ago in response to Holocene warming.

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

A photo of a flock (or "fling") of >40 Least Sandpipers—a small shorebird—with many individuals (quasi-synchronized!) with outstretched wings whose silheouttes are viewable amidst the marshy mud/grass blurred background.

A "fling" of Least Sandpipers—mesmerizing how they become a collective, organized, and synchronized entity 🪶

Not particularly at the moment, I suppose 😓 Back in the good ol' days (~2019) there was a v strong potential proposal to drill the Miocene offshore the Western Ghats, Malabar Coast, which I think would've been right up both of our alleys? One can still hope (+ make our luck as you say)

YouTube video by Adult Swim Tradigital | Ambient Swim | adult swim

Moar excellent writing-ambient btw

www.youtube.com/watch?v=1vzg...

Lol...challenge accepted—if we are fortunate to sail together some day!

A bird of prey—a Northern Harrier—in flight; with wings extended, sharp, hooked beak, and yellow eyes. The bird is brown and white (mottled) overall, has a sharp white eyebrow, and a white rump—with a sleek, aerodynamic body.

A bird of prey—a Northern Harrier—in flight; with wings extended, sharp, hooked beak, and yellow eyes. The bird is brown and white (mottled) overall, has a sharp white eyebrow, and a white rump—with a sleek, aerodynamic body. In this photo, there is a backdrop of mountains and sand.

Here's a majestic Northern Harrier in flight, spotted in Avra Valley (southern AZ) 🪶

Fun fact: apparently Northern Harriers are moving their range into NE Russia for the first time in recorded history over the past few years (link.springer.com/article/10.1...)

YouTube video by Paralisis NYC S.P.K. - Zamia Lehmanni Songs Of Byzantine Flowers [1986] (1992 Edition)

In exchange, here’s a good ambient album to write to: youtu.be/MmdNFc31w0Q?...

An art and a science: Scripps Oceanography showcases 5,000 seaweed pressings UC San Diego’s Smith Seaweed Ecology Lab is digitizing its collection of more than 5,000 pressings and making it accessible to the public

Seaweed pressing as an art and a science: our newly reestablished herbarium collection at Scripps and the history behind it #Phycology

Ah yes... the "coat bath"room—where my jacket goes to cry after a particularly tough day in the office...

Paysage d'Hiver - Die Festung [full album] - YouTube Die Festung is the second demo of Paysage d'Hiver, recorded in 1999.

Revisiting Paysage d’Hiver’s Die Festung after… too long—vast, hypnotic, immersive, solemn, and unsettling wintry atmospheres. ❄️
#DarkAmbient

www.youtube.com/playlist?lis...

Common Era time-transgressive forcing of Caribbean water balance - Communications Earth & Environment The balance between precipitation and evaporation in the Caribbean region during the Common Era can be estimated through analyses of sedimentary foraminiferal assemblages that record submarine groundw...

Led by Pete van Hengstum (Texas A&M), we have a new article out focusing on water balance ☔️ in the #Caribbean region over the past two millennia (+ implications for future changes under #climatechange), using a coastal Blue Hole in the Bahamas as a natural archive!

www.nature.com/articles/s43...

New octopus dropped down in Coral City 👽✌️🐙 #octopus #cephalopodsofcoralcity #cephalopod #headfoot #alien #dropdown #peaceout #coral #coralhead #coralcitycamera #miami #portmiami #biscaynebay #coralcity

Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations Abstract. Anomalous freshwater fluxes from the Greenland and Antarctic ice sheets and ice shelves are impacting the surrounding oceans, and we need to be able to account for these effects in climate m...

Finally out! The outcome of a virtual workshop in Feb 2024 with modelers and observationalists to put together data and protocols to include historical changes in ice sheet/ice shelf discharge in CMIP models. Hopefully not too late for some CMIP7 runs!

gmd.copernicus.org/articles/18/...

Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...

Huge paper for the Arctic Ocean published today in @science.org - a new 30,000 year history of Arctic Ocean sea-ice cover reconstructed from the accumulation of cosmic dust-derived helium-3! www.science.org/doi/10.1126/... (1/n)

Jay was on my PhD committee and taught me carbonate geochemistry, and to approach my speleothem problems with patience and depth. I’m deeply grateful for the time I got to learn from him. His influence will always remain a part of my journey. Will miss you, Jay!

A sad piece of news: I am heartbroken to learn that Jay Quade passed away today—a profound loss for our geoscience community. Jay was an inspirational scientist, an exemplary colleague, and an extraordinary human being.

I’ll miss you, Jay! 😞

An illustration showing the new view of the equatorial Pacific temperature, nutrients, upwelling, and subsurface oxygen during the Pliocene epoch (5.3 to 2.6 million years ago)

I'm also quite happy that Yair Rosenthal (a friend and mentor) and @anya-hess.bsky.social wrote a Perspective on our work.

www.science.org/doi/epdf/10....

Very excited to be a part of this epic journey with @oceanandclimate.bsky.social. Check out our #NSFfunded paper published in @science.org today & his thread below. After that, come back here for more... (1/n)

Perhaps—but I’d think us geologists would *specifically* be interested in (& pay detailed attention to) the exact physical mechanism through which things get time-averaged over long, geological timescales…I suspect it has more to do with our training being decoupled w atmos science/meteorology.

When a hurricane can take off, boy does it take off:
the 2025 Atlantic hurricane season story.

Watch Humberto also rapidly intensify from a lopsided tropical storm to a major hurricane.

Notable intensity changes:
- 40 to 125 kt within 48 hours
- 65 to 125 kt within 24 hours

It's unfortunate and inaccurate—particularly in speleothem isotope studies, where we geoscientists seem to forget that there is a thing that does *A LOT* of stuff to the isotopes called "the atmosphere", located between the ocean and the cave...

A map depicting much of central and South Asia, the Indian Ocean, with very high resolution topography, with a number of cave sites depicted, and absolutely fantastic(/unrealistic) singular wind arrows purported to represent different wind regimes.

It's amusing to me how geologists use *extremely* high-resolution datasets for topography, but then forget (?/ignore/don't know?) that equally high-resolution data exists for the atmosphere... and that unrealistic/artistic/fantastical depictions of winds are not necessary (nor scientific). /rant

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.

🚨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/...

E-see you all the climate enthusiasts at our upcoming ICCP speleothem lecture series on 25th September with Dr. Stacy Carolin
Zoom link: pusan.zoom.us/j/8901635789...

Happy #fossilfriday
Checkout this cool #Mississippian ? #brachiopod which I believe is #Composita encrusted by some #bryozoa #fossilsofmissouri