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Anya Hess

@anya-hess.bsky.social
320 followers 376 following 29 posts

Paleoceanographer and geochemist interested in ocean redox | Postdoc at WHOI | foraminifera | she/they 🏳️‍🌈

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Anya Hess @anya-hess.bsky.social · 24/09/2026
Very excited to announce our paper is out in Science Advances @science.org! Our reconstructions show Pacific Walker Circulation was stronger during the Little Ice Age, consistent with projections of weakening with future warming www.science.org/doi/10.1126/... @whoi.edu @rutgersupress.bsky.social
science.org
A strong Pacific Walker Circulation during the Little Ice Age
Reconstructions of climate over the past millennium provide context for disentangling anthropogenic forcing from natural multidecadal variability. However, the strength of the east-west tropical Pacif...
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Anya Hess @anya-hess.bsky.social · 21/01/2026
Understanding Greenland's response to climate change is critical, and depends on Greenland's sovereignty and inclusion in NATO
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Dr. Evan J. Gowan @evangowan.bsky.social · 21/01/2026
Lewright et al provide a prediction of relative sea level change by the end of the 21st century for Greenland. Due to glacial isostatic adjustment effects, most of Greenland will experience a sea level fall of over 1 m by the end of the century. www.nature.com/articles/s41...
nature.com
Projections of 21st-century sea-level fall along coastal Greenland - Nature Communications
Melting from the Greenland Ice Sheet triggers land uplift beneath the ice sheet and changes to Earth’s gravitational field and rotation axis, a process called Glacial Isostatic Adjustment. Lewright et...
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Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 20/01/2026
We have a new preprint, led by @petrash.bsky.social, using wicked electrochemistry and really nifty microscopy to look at how manganese redox cycling and carboxyl groups play into the formation of protodolomite. 🧪⚒️ eartharxiv.org/repository/v...
Multiscale characterization of Mn-templated protodolomite formed under electrochemical and carboxyl modulation
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Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 21/01/2026
Neodymium is one of those elements who's budget in the ocean is off (unbalanced), also, we don't know where all the Nd is coming from. This study shows that the dissolution of iron-manganese (Fe-Mn) oxyhydroxides in resuspended sediments and dissoltuion in pore water are an important source. 🧪🌊
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Anya Hess @anya-hess.bsky.social · 16/01/2026
🚨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...
nature.com
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...
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David Ho @davidho.bsky.social · 20/12/2025
Read this from Ben Santer (very famous climate scientist for those who don’t know) about what NCAR means and what dismantling it will do.
thebulletin.org
Threatening NCAR, Trump administration seeks to extinguish a beacon of climate science
The Trump administration’s world view is that the US doesn’t need a climate science brain trust because it doesn’t like what the brains say.
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Anya Hess @anya-hess.bsky.social · 01/12/2025
It was a pleasure to dive into this excellent paper by Rafter et al. @oceanandclimate.bsky.social (www.science.org/doi/10.1126/...) and help with writing this perspective piece
science.org
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Patrick Rafter @oceanandclimate.bsky.social · 03/10/2025
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/...
science.org
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 ...
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PO2 - Past Ocean Oxygen Working Group @pastoxygen.bsky.social · 11/06/2025
📢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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Kau))) @carbon8.bsky.social · 28/07/2025
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 · 26/07/2025
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.
wired.com
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.
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Kevin J. Kircher @kevinjkircher.com · 26/07/2025
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).
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Anya Hess @anya-hess.bsky.social · 16/07/2025
It's going to be a grand old (like 5-23 My old) time!
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James Rae @mudwaterclimate.bsky.social · 15/07/2025
🚨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
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EGU Climate Division @egu-cl.bsky.social · 16/07/2025
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
linkedin.com
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 🌤...
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Anya Hess @anya-hess.bsky.social · 16/07/2025
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 · 15/12/2024
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 · 04/05/2025
So happy to have been a part of this 📖
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Nicolas Mainville @carbonick.bsky.social · 04/05/2025
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. 🌎
euronews.com
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.
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Dr. Dawn Wright @deepseadawn.bsky.social · 04/05/2025
🧪 🌊 #geosky #geogchat 🌎🌍🌏
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David Ho @davidho.bsky.social · 31/08/2024
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 · 22/04/2025
Update! PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
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Alex Auderset @alexauderset.bsky.social · 22/04/2025
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 · 21/04/2025
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 · 21/04/2025
#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 · 08/04/2025
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.
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Helen Czerski @helenczerski.bsky.social · 21/04/2025
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 · 19/04/2025
#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 · 17/04/2025
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
nesdis.noaa.gov
Notice of Changes
Notices of changes are formal public announcements of planned services changes to applications and other products.
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Bob Gooday @bobgooday.bsky.social · 15/04/2025
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.
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Stefan Sobolowski @stefansobo.bsky.social · 15/04/2025
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-...
datarescueproject.org
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...
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Katharine Hayhoe @katharinehayhoe.com · 15/04/2025
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
star.nesdis.noaa.gov
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.
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Anya Hess @anya-hess.bsky.social · 15/04/2025
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
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Scripps Institution of Oceanography @scrippsocean.bsky.social · 25/03/2025
🤯
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Elizabeth Sibert, PhD @elizabethsibert.bsky.social · 25/03/2025
I'm honored to be named as an Ocean Discovery Lecturer this year. If your institution doesn't have much for seminars, but you want to learn about fish and sharks through time or the awesome work by the other lecturers, this is a great chance to bring someone in! usoceandiscovery.org/lecture-seri...
usoceandiscovery.org
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Int Assoc for Geoscience Diversity (the IAGD) @accessiblegeo.bsky.social · 22/03/2025
Carleton University and the IAGD are putting on an accessible geology field trip on May 11, 2025. We hope you can join us! Details on the attached flyer. Apply at shorturl.at/DkBOO or contact beth.mclartyhalfkenny@carleton.ca for more information.
Flyer with text on the right side and three field pictures on the left. The first is of a river bank and some foliage. The second is of a dark grey, banded outcrop. The third is of plants growing in lightly-colored soil or sand.
Text reads:
GAC MAC IAH-CNC 2025 Ottawa Conference
Geoheritage of the National Capital Accessible Field Trip
Join us for a fully inclusive field trip to visit exceptional geoheritage sites in the Ottawa area and learn how intentional design and simple technologies can remove barriers and build truly accessible field experiences.
Date: Sunday, May 11, 2025
Cost: $100. Some needs-based subsides are available. Fee includes lunch and a field guide with geology and accessibility information.
Pickup/drop off: University of Ottawa (exact location TBD)
Apply: An application is required to ensure spaces will be available for those who need accessibility accommodations. All are welcome!
For more information contact beth.mclartyhalfkenny@carleton.ca
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Anya Hess @anya-hess.bsky.social · 22/03/2025
I use the chemical composition of foraminifera to tell me about water temperature and oxygen content of past oceans. This article gives a good summary of some of the widespread ways forams are used in science 🧪👩‍🔬
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Julie Campbell @momrunninglate.bsky.social · 08/12/2024
An ongoing passion project of mine at work: making small info placards about women in STEM that hang in our campus biology building. Their stories give me strength & hope especially now when we face 4 years of darkness. Here is the 1st of many I'll be sharing. #WomeninSTEM #academicsky #skystorians
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Anya Hess @anya-hess.bsky.social · 21/03/2025
Can we all agree that writing "laboratory" instead of "lab" in our publications feels weird?
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Dr. Evan J. Gowan @evangowan.bsky.social · 13/02/2025
With the threats being levied against NOAA, I felt it was time to download all the sediment core and paleoceanography data being stored on NOAA's NCEI, just in case. I have uploaded the script to Github, just in case anyone wants to do the same! 🧪 ⚒️ 🦣 🌊 github.com/evangowan/EJ...
github.com
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Krystal Kavita Jagoo, MSW (She/Her/Hers) 🇹🇹👊🏽✍️🏾♊️♊️♏️ @equitableforall.com · 09/03/2025
Shameless plug for my article on how to improve accessibility for virtual events, as many facilitators still go out of their way to let participants know how much they want attendees on camera as if simulating eye contact on videoconferencing guarantees engagement! 🤡 web.archive.org/web/20210503...
An article screenshot is seen. Against a white background, black text states:

Facilitators may promote comfortable
engagement for folx by:

- Making expectations explicit to reduce
ambiguities for participants

- Providing both video and call-in options for attending events

- Being open to folx enjoying an activity to
minimize social pressures

- Encouraging participation during a time
when folx may pop in or out

- Sending calendar invites and reminders in
advance of virtual events

- Facilitating connections among attendees
based on shared interests

- Letting folx know that there is no pressure
for them to be on camera
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Kau))) @carbon8.bsky.social · 09/03/2025
We are now breathing air with more greenhouse gases than our earliest human ancestors. #CyanobacteriaInACoalMine
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American Meteorological Society @ametsoc.org · 21/02/2025
The AMS is temporarily opening its career services to all who need them, regardless of membership status, and offering dues waivers and meeting registration fee reductions for those impacted by job loss due to changes in the government. Read more: bit.ly/4gRiHAk
The official AMS logo.
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Dr. Jennifer Wade @volcanojw.bsky.social · 08/02/2025
Some folks have asked, given recent news, “how do I show my friends/family the impact of NSF?” We have some easy Fact Sheets for you! Here’s a brief thread about this website: new.nsf.gov/about/fact-s... which hosts a ton of useful one-pagers.
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Anya Hess @anya-hess.bsky.social · 21/02/2025
Last week I gave a presentation and I assume it went well because afterwards a woman in the back row gave me heart hands. Total stranger. Gen z is delightful
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Celeste Labedz @celestelabedz.bsky.social · 10/02/2025
The main DEI page from @agu.org has been modified to take diversity out of the title. Glad to see it's not deleted entirely, but hey AGU, we're watching what you do and remembering the big game you once talked about supporting your diverse membership. Today vs. January
Screencap of American Geophysical Union DEI webpage (URL at end) reading "Inclusion at AGU" on a banner with "AGU Ethics & Equity Center" link below it.

https://www.agu.org/learn-about-agu/about-agu/diversity-and-inclusionScreencap Wayback Machine archive version of American Geophysical Union DEI webpage (URL at end) from January 04 2025, reading "Diversity & Inclusion at AGU" on a banner with "Diversity, Equity, & Inclusion at AGU" section below it, with link to "Diversity & Inclusion Strategic Plan"
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Pam Herd @pamherd.bsky.social · 02/02/2025
Fantastic bit of good news! Looks like NSF responded to the court order and funded grantees will be able to access already dedicated funds.
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Prof Alessandro Tagliabue @altagliabue.bsky.social · 01/02/2025
Are you a GEOTRACES student or early career scientist? Get engaged and stay informed on GEOTRACES activities during this exciting period ahead! 🌊🧪❄️ Sign up for the @geotraces.bsky.social Student and Early Career Scientist Mailing list here: forms.gle/iSNWtQG58bML...
forms.gle
GEOTRACES Student and Early Career Scientist mailing list
The GEOTRACES Early Career Scientist (ECS) Committee wishes to create a mailing list of GEOTRACES students (Master and PhD) and Early Career Scientists (be no more than 10 years from PhD completion - ...
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Jesse Farmer @jfarmersalmanac.bsky.social · 01/02/2025
Jan 31 evening: Chief Judge John McConnell issues temporary restraining order against any delay in federal funds issued to 22 plaintiff states. Worth a read overall, and the conclusions text is revealing (1/8): (storage.courtlistener.com/recap/gov.us...)
storage.courtlistener.com
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