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Reposted by Anya Hess

PO2 - Past Ocean Oxygen Working Group @pastoxygen.bsky.social · Jun 11

📢The Past Ocean Oxygenation @pages-ipo.bsky.social Working Group is here! 🚤 We provide insights into the natural variability of seawater oxygen in key periods of the geological record & communicate the science behind oxygen reconstructions 🐳 PO2 is here! pastglobalchanges.org/science/wg/p...

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Anya Hess @anya-hess.bsky.social · Aug 8

Can we have a tldr for those who prefer written over oral communication?

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Kau))) @carbon8.bsky.social · Jul 28

Led by U. LA Lafayette Ph.D. student Gracie Babineaux, we have a new paper out in #EPSL showing how individual foraminiferal δ¹³C analyses of benthic Pyrgo spp. can record short-lived #methane seepage events from the seafloor. 🌊

www.sciencedirect.com/science/arti...

A schematic showing carbon isotope values for different benthic foraminiferal species living in sedimentary habitats reflecting different methane and dissolved inorganic carbon (DIC) values. IFA = individual foraminiferal analyses. SMTZ = sulfate-methane transition zone.

A scanning electron microscope image of an intact versus a broken benthic foraminiferal test belonging to the genus Pyrgo.

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David Ho @davidho.bsky.social · Jul 26

The first planned migration of an entire country due to climate change is happening! Tuvalu, a Pacific island nation, is at risk of being submerged under rising sea level, so it has signed an agreement with Australia to allow 280 Tuvaluans to settle in Australia as permanent residents each year.

The First Planned Migration of an Entire Country Is Underway

The Pacific island nation of Tuvalu could be submerged in 25 years due to rising sea levels, so a plan is being implemented to relocate its population to Australia.

www.wired.com

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Kevin J. CREATURE @kevinjkircher.com · Jul 26

Yes. Air conditioners are all powered by electricity, so will get cleaner as we clean up the grid. Heat, by contrast, is mostly fossil-fueled. The real goals, IMO, are ensuring that a) everyone who will need AC in outr heated world, gets it; b) all those ACs are heat pumps (ACs that can also heat).

Richard Waite @waiterich.bsky.social · Jul 26

Global emissions from heating are about 4x those from cooling.

Air conditioning is an important and lifesaving adaptation to climate change.

Decarbonize the grid.

Graph showing global carbon emissions from heating vs cooling. Heating is about 4 billion tonnes CO2e/year; cooling is about 1. Source https://ourworldindata.org/grapher/co2-heating-cooling

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Anya Hess @anya-hess.bsky.social · Jul 16

It's going to be a grand old (like 5-23 My old) time!

Anta-Clarisse Sarr @antacl.bsky.social · Jul 16

🚨Working in Miocene #climate and going to #AGU25 ? We have the perfect session for you ➡️ PP018 agu.confex.com/agu/agu25/me...

Any part of the climate system welcome🌦️🧊🌊🌳 …!

ℹ️ Deadline - 30th July 2025

Advertisement for AGU 2025 session PP018 - Miocene climate dynamics: from poles to tropics and land to sea. Details can be accessed on AGU 2024 Website.

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James Rae @mudwaterclimate.bsky.social · Jul 15

🚨New paper just out on environmental upset at the Triassic-Jurassic boundary🚨

Using boron isotopes in fossil oysters, we find a major pulse of ocean acidification and CO2 rise, driving global warming and delaying ecosystem recovery following the end-Triassic mass extinction
rdcu.be/ev6XV

🧪🌊⚒️🐚🧵

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EGU Climate Division @egu-cl.bsky.social · Jul 16

After a quiet period, we are very happy to finally join Bluesky!🦋. This is the official account of the #Climate Division of the @egu.eu

Follow us to stay up to date with Division news, blog posts, Campfires, ways to get involved, and more!😊

We are also on LinkedIn🎉 Come say hello!
#EGU

EGU Climate Division | LinkedIn

EGU Climate Division | 5 followers on LinkedIn. Official account of EGU Division on Climate: Past, Present & Future (CL) | Official account of EGU Division on Climate: Past, Present & Future 🌤...

www.linkedin.com

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Anya Hess @anya-hess.bsky.social · Jul 16

The N-S equatorial Pacific cross section in this post is Fig. 1C. I created it during my PhD when I was trying to understand this OMZ and couldn't find any similar figures out there, so I made my own. I'm so happy to have found a good home for it!

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Anya Hess @anya-hess.bsky.social · Jul 16

doi.org/10.1016/j.gc...

Redirecting

doi.org

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Anya Hess @anya-hess.bsky.social · Jul 16

In this paper, we present new global calibrations for the I/Ca proxy for ocean oxygenation, with the first Pacific transect. By comparing data from planktonic foram species that live at different water depths, we gain a better understanding of the proxy and its relationship to O2

#paleoceanography

South-North cross section through the eastern tropical Pacific oxygen minimum zone. It shows the north and south lobe of the oxygen minimum zone, separated by the equatorial undercurrent. The Peru-Chile current and California Current ventilate the near-surface waters, North Pacific Intermediate waters bring low-oxygen waters to the northern lobe at ~550m, and Antarctic Intermediate Waters ventilate the southern lobe at the same depth. The oxygen minimum zone is fueled by Ekman upwelling and remineralization of sinking organic material.

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Chris Lowery @chrislowery.bsky.social · Dec 15

On my last exam for Marine Geology one of the questions was "what was the most important thing you learned in this class?" and by far the most common answer was some version of "how the record of past climate change can help us understand what's happening now". The people hunger for Paleoceanography

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Anya Hess @anya-hess.bsky.social · May 4

So happy to have been a part of this 📖

Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · Mar 21

#WeekendReading: Hoogakker (and 67 other people) go into the current state of low-oxygen proxies currently in use in paleoceanography. It's a small book (95 pages), more than a paper, and covers a lot. 🧪⚒️
bg.copernicus.org/articles/22/...

Overview of oxygen “stage” nomenclature used in this review. From top to bottom shows the ranges most often associated with the descriptive terms OMZ, oxygen-deficient zone (ODZ), anoxia, dysoxia/hypoxia, and anoxia in seawater. Oxygen concentrations are shown on a log-linear scale along with a simplified schematic of several proxy-relevant components of other redox-sensitive reactions. Chemical concentrations other than oxygen are non-dimensional, but all relate to scales. The redox ladder is modified from Canfield and Thamdrup (2009).

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Nicolas Mainville @carbonick.bsky.social · May 4

A new study has calculated that increasing vegetation in urban areas by 30 per cent could have prevented more than one third of all global heat-related deaths between 2000 to 2019. In total, 1.16 million lives may have been saved with more greenery during this 20-year period. 🌎

How more trees in cities could have saved 400,000 lives in Europe

‘Expanding greenness’ could save millions of lives, a comprehensive new study finds.

www.euronews.com

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Dr. Dawn Wright @deepseadawn.bsky.social · May 4

🧪 🌊 #geosky #geogchat 🌎🌍🌏

Dr. Dawn Wright @deepseadawn.bsky.social · May 3

**Rapid Response Bridge Funding Program** -- $25,000 grants earmarked for early-career researchers whose NSF-funded research on STEM and education has just been terminated.

www.spencer.org/grant_types/...

hub.jhu.edu/2025/04/28/j...

Thanks @lizneeley.bsky.social !

Rapid Response Bridge Funding Program

In the face of recent abrupt shifts in federal funding for education research, including large-scale terminations of National Science Foundation (NSF) research grant awards, we have developed a rap...

www.spencer.org

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David Ho @davidho.bsky.social · Aug 31

Psst…You want to know about the NASA website that spells out your name in Landsat imagery. 🧪

landsat.gsfc.nasa.gov/apps/YourNam...

A series of five satellite images showcasing diverse landscapes: an island with turquoise waters, a snowy terrain, mountainous regions with winding roads, colorful lakes, and a dry, arid area with circular features. More importantly, they spell out DAVID with their landscape images.

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PAGES (Past Global Changes) @pages-ipo.bsky.social · Apr 22

Update!
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.

Jenna C. Hill @chillocean.bsky.social · Apr 17

NOAA just announced a long list of datasets that are going away🧪⚒️🌊: www.nesdis.noaa.gov/about/docume...
Download what you need asap and send comments to: [email protected]

Notice of Changes

Notices of changes are formal public announcements of planned services changes to applications and other products.

www.nesdis.noaa.gov

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Alex Auderset @alexauderset.bsky.social · Apr 22

Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera!
Check out our latest paper:
bg.copernicus.org/articles/22/...

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Rebecca R Helm @rebeccarhelm.bsky.social · Apr 21

Watching animals eat is like my biology crack. I don’t need it, I don’t have to do it, I don’t even always like it, but there’s just something about critters noshing on one another that leaves me gobsmacked. And nothing does it like the comb jelly Beroe [Thread 🧵]
📽️ www.youtube.com/watch?v=1xkN...

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Pallavi Anand (she/her) @anandpallavijha.bsky.social · Apr 21

#ICP15 #abstract and #registration #deadlines - 30th April!
www.icp15.com/news/registr...

Please submit abstracts - #biogeochemistry , #paleomonsoon , #ocean #climate #dynamics , #paleoclimate #reconstructions and #innovation in #paleoceanography
+ perspectives talks!
#ICP15 #pleanry #speakers 👇🏼.

#ICP15 speakers across five themes - https://www.icp15.com/themes

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Jenn Fehrenbacher @jennfehrenbacher.bsky.social · Apr 7

These are some very unhappy Globigerina bulloides #Forams. I have no idea what is going on here. Are they decalcifying? What are the vacuoles around the specimen? Until this field season, I had never observed this. These were also in the high CO2 "bad water". Has anyone observed this before?

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Helen Czerski @helenczerski.bsky.social · Apr 21

These "Happy Raindrops" are very cute, but this shape is a very persistent myth - no raindrop has ever been that shape. Even at the moment a drop breaks away (see 2nd pic for reality). The boundary between air and water has surface tension & acts like an elastic sheet. Pointy regions don't form.

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Pallavi Anand (she/her) @anandpallavijha.bsky.social · Apr 19

#ICP15 #awards 120 #ECR #grants.

We were able to support a diverse group of applicants from 21 #countries, around 80% of which were #PhD students.

Congratulations to all successful applicants 👏🏽👏🏽

Read more 👇🏼
www.icp15.com/news/ecr-gra...

#ICP15 deadlines and announcement of 120 ECR grants.

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Jenna C. Hill @chillocean.bsky.social · Apr 17

NOAA just announced a long list of datasets that are going away🧪⚒️🌊: www.nesdis.noaa.gov/about/docume...
Download what you need asap and send comments to: [email protected]

Notice of Changes

Notices of changes are formal public announcements of planned services changes to applications and other products.

www.nesdis.noaa.gov

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Bob Gooday @bobgooday.bsky.social · Apr 15

This is such *chef's kiss* data visualisation. The whole thing is great, but even the first image on its own does the job flawlessly.

The Mary Rose Museum @maryrosemuseum.bsky.social · Apr 15

On the anniversary of the sinking of the Titanic, we thought we'd answer a question that's often asked,

"If they raised the Mary Rose, why not raise the Titanic?"

Allow our scaled diagram to explain...

A light blue diagram depicting the sea, with the water's surface at the top, and just below it is an outline of the Mary Rose, with the depth (12m, 40ft or 6.7 fathoms). There is a line showing the seabed, which takes a rapid dive into the vertical...

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