Anya Hess
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anya-hess.bsky.social
Anya Hess
@anya-hess.bsky.social
220 followers 340 following 15 posts
Paleoceanographer and geochemist interested in ocean redox | Postdoc at WHOI | foraminifera | she/they 🏳️‍🌈
Posts Replies Media Videos
Reposted by Anya Hess
pastoxygen.bsky.social
📢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...
June 11, 2025 at 6:16 PM
Reposted by Anya Hess
carbon8.bsky.social
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.
July 28, 2025 at 5:00 AM
Reposted by Anya Hess
davidho.bsky.social
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
July 26, 2025 at 10:20 AM
Reposted by Anya Hess
kevinjkircher.com
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).
waiterich.bsky.social 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.
July 26, 2025 at 8:30 PM
anya-hess.bsky.social
It's going to be a grand old (like 5-23 My old) time!
antacl.bsky.social 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.
July 16, 2025 at 3:28 PM
Reposted by Anya Hess
mudwaterclimate.bsky.social
🚨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

🧪🌊⚒️🐚🧵
Journal title in Nature Communications
July 15, 2025 at 3:57 AM
Reposted by Anya Hess
egu-cl.bsky.social
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
July 16, 2025 at 7:44 AM
anya-hess.bsky.social
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.
July 16, 2025 at 2:48 PM
Reposted by Anya Hess
chrislowery.bsky.social
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
December 15, 2024 at 6:13 PM
anya-hess.bsky.social
So happy to have been a part of this 📖
obialik.bsky.social 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).
May 4, 2025 at 1:38 PM
Reposted by Anya Hess
carbonick.bsky.social
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
May 4, 2025 at 10:22 AM
Reposted by Anya Hess
deepseadawn.bsky.social
🧪 🌊 #geosky #geogchat 🌎🌍🌏
May 4, 2025 at 1:45 AM
Reposted by Anya Hess
davidho.bsky.social
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.
August 31, 2024 at 2:00 AM
Reposted by Anya Hess
pages-ipo.bsky.social
Update!
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
April 22, 2025 at 10:09 AM
Reposted by Anya Hess
alexauderset.bsky.social
Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera!
Check out our latest paper:
bg.copernicus.org/articles/22/...
April 22, 2025 at 1:27 PM
Reposted by Anya Hess
rebeccarhelm.bsky.social
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...
April 21, 2025 at 8:55 PM
Reposted by Anya Hess
anandpallavijha.bsky.social
#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
April 21, 2025 at 11:46 AM
Reposted by Anya Hess
jennfehrenbacher.bsky.social
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?
A Globigerina bulloides with a brand new chamber and a shell surrounded by or covered in small round vacuoles. A Globigerina bulloides with a brand new chamber and a shell surrounded by or covered in small round vacuoles. A Globigerina bulloides with a brand new chamber and a shell surrounded by or covered in small round vacuoles. There is debris in the spines here, typically a sign the forams is not doing well. They usually clear debris quickly. There was cytoplasm streaming on the spines, so it was definitely still alive. The shell is very thin.
April 7, 2025 at 11:37 PM
Reposted by Anya Hess
helenczerski.bsky.social
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.
April 21, 2025 at 1:03 PM
Reposted by Anya Hess
anandpallavijha.bsky.social
#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.
April 19, 2025 at 9:56 AM
Reposted by Anya Hess
chillocean.bsky.social
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: ncei.info@noaa.gov
Notice of Changes
Notices of changes are formal public announcements of planned services changes to applications and other products.
www.nesdis.noaa.gov
April 17, 2025 at 12:44 AM
Reposted by Anya Hess
bobgooday.bsky.social
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.
maryrosemuseum.bsky.social 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...
April 15, 2025 at 12:28 PM
Reposted by Anya Hess
stefansobo.bsky.social
The @datarescueproject.org has been working for the past month or so to back up "all" data that might be lost. They have a helpful tracker so that scientists can ensure that their crucial resource doesn't slip through the cracks. #StandUpForScience www.datarescueproject.org/data-rescue-...
The Data Rescue Tracker
The Data Rescue Tracker is a collaborative tool built to catalog existing public data rescue efforts so that we can coordinate better across initiatives. At this stage, you can use the tool to help re...
www.datarescueproject.org
April 15, 2025 at 10:41 AM
Reposted by Anya Hess
katharinehayhoe.com
The @noaa.gov science seminars continue! All are online and open to the public.

Upcoming topics include:

Listening to Whales: Using bioacoustics & behavior for conservation

Changing Estuaries & Shrimp

Monterey Bay’s Iconic Kelp Forests

Increasing educational impacts through citizen science
Center for Satellite Applications and Research - NOAA / NESDIS / STAR
STAR translates raw satellite data into critical information needed to inform the public and safeguard the environment across the country and around the world.
www.star.nesdis.noaa.gov
April 15, 2025 at 3:57 PM
anya-hess.bsky.social
As a postdoc, there's a sad irony to Facebook's people you might know suggestions. I've moved around so much as an academic, I certainly don't know the people my friends know now
April 15, 2025 at 4:35 PM