Anya Hess
@anya-hess.bsky.social
Paleoceanographer and geochemist interested in ocean redox | Postdoc at WHOI | foraminifera | she/they 🏳️🌈
Understanding Greenland's response to climate change is critical, and depends on Greenland's sovereignty and inclusion in NATO
As world leaders, businesses and civil society gather in #Davos for the #WEF, here is a timely reminder why Greenland is indispensable to global #climate science 🧪
via: Prof Martin Siegert in @theconversation.com
theconversation.com/why-greenlan...
via: Prof Martin Siegert in @theconversation.com
theconversation.com/why-greenlan...
Why Greenland is indispensable to global climate science
With no Antarctica-style treaty to protect Greenland, a US takeover could mean scientists lose access.
theconversation.com
January 21, 2026 at 12:49 PM
Understanding Greenland's response to climate change is critical, and depends on Greenland's sovereignty and inclusion in NATO
Reposted by Anya Hess
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...
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...
www.nature.com
January 21, 2026 at 2:08 AM
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...
Reposted by Anya Hess
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...
eartharxiv.org/repository/v...
January 20, 2026 at 3:22 PM
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...
eartharxiv.org/repository/v...
Reposted by Anya Hess
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. 🧪🌊
New paper shows:
Sediment resuspension and reductive dissolution of terrigenous Fe-Mn oxides control dissolved neodymium and hafnium inputs from the Amazon shelf
doi.org/10.1016/j.gc...
Sediment resuspension and reductive dissolution of terrigenous Fe-Mn oxides control dissolved neodymium and hafnium inputs from the Amazon shelf
doi.org/10.1016/j.gc...
January 21, 2026 at 6:03 AM
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. 🧪🌊
🚨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...
Link to paper: www.nature.com/articles/s43...
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...
www.nature.com
January 16, 2026 at 5:21 PM
🚨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...
Link to paper: www.nature.com/articles/s43...
Reposted by Anya Hess
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.
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.
thebulletin.org
December 20, 2025 at 4:03 PM
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.
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
December 1, 2025 at 3:58 PM
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
Reposted by Anya Hess
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/...
🌊
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
October 3, 2025 at 12:04 AM
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/...
🌊
www.science.org/doi/10.1126/...
Reposted by Anya Hess
📢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
📢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...
Reposted by Anya Hess
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...
www.sciencedirect.com/science/arti...
July 28, 2025 at 5:00 AM
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...
www.sciencedirect.com/science/arti...
Reposted by Anya Hess
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
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.
Reposted by Anya Hess
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).
Global emissions from heating are about 4x those from cooling.
Air conditioning is an important and lifesaving adaptation to climate change.
Decarbonize the grid.
Air conditioning is an important and lifesaving adaptation to climate change.
Decarbonize the grid.
July 26, 2025 at 8:30 PM
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).
It's going to be a grand old (like 5-23 My old) time!
🚨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
Any part of the climate system welcome🌦️🧊🌊🌳 …!
ℹ️ Deadline - 30th July 2025
July 16, 2025 at 3:28 PM
It's going to be a grand old (like 5-23 My old) time!
Reposted by Anya Hess
🚨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
🧪🌊⚒️🐚🧵
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
🧪🌊⚒️🐚🧵
July 15, 2025 at 3:57 AM
🚨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
🧪🌊⚒️🐚🧵
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
🧪🌊⚒️🐚🧵
Reposted by Anya Hess
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
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
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
#paleoceanography
July 16, 2025 at 2:48 PM
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
#paleoceanography
Reposted by Anya Hess
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
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
So happy to have been a part of this 📖
#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/...
bg.copernicus.org/articles/22/...
May 4, 2025 at 1:38 PM
So happy to have been a part of this 📖
Reposted by Anya Hess
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
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. 🌎
Reposted by Anya Hess
**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 !
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
May 4, 2025 at 1:45 AM
Reposted by Anya Hess
Psst…You want to know about the NASA website that spells out your name in Landsat imagery. 🧪
landsat.gsfc.nasa.gov/apps/YourNam...
landsat.gsfc.nasa.gov/apps/YourNam...
August 31, 2024 at 2:00 AM
Psst…You want to know about the NASA website that spells out your name in Landsat imagery. 🧪
landsat.gsfc.nasa.gov/apps/YourNam...
landsat.gsfc.nasa.gov/apps/YourNam...
Reposted by Anya Hess
Update!
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
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]
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
April 22, 2025 at 10:09 AM
Update!
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
PAGES has received confirmation that this does not concern the WDS-Paleo datasets which are curated by a different division within #NCEI.
Reposted by Anya Hess
Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera!
Check out our latest paper:
bg.copernicus.org/articles/22/...
Check out our latest paper:
bg.copernicus.org/articles/22/...
April 22, 2025 at 1:27 PM
Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera!
Check out our latest paper:
bg.copernicus.org/articles/22/...
Check out our latest paper:
bg.copernicus.org/articles/22/...
Reposted by Anya Hess
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...
📽️ www.youtube.com/watch?v=1xkN...
April 21, 2025 at 8:55 PM
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...
📽️ www.youtube.com/watch?v=1xkN...
Reposted by Anya Hess
#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 👇🏼.
www.icp15.com/news/registr...
Please submit abstracts - #biogeochemistry , #paleomonsoon , #ocean #climate #dynamics , #paleoclimate #reconstructions and #innovation in #paleoceanography
+ perspectives talks!
#ICP15 #pleanry #speakers 👇🏼.
April 21, 2025 at 11:46 AM
#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 👇🏼.
www.icp15.com/news/registr...
Please submit abstracts - #biogeochemistry , #paleomonsoon , #ocean #climate #dynamics , #paleoclimate #reconstructions and #innovation in #paleoceanography
+ perspectives talks!
#ICP15 #pleanry #speakers 👇🏼.