Happy holidays Bsky! - from the MICOlab and our Pyrodinium ❤️🌊 #microbialsky #microsky #phytosky animation by recent MICOlab graduate @lydiaruggles.bsky.social

It is hard to overstate how critical @ncar-ucar.bsky.social is to climate science in the US and around the world. It's the beating heart of our field. Generations of scientists have trained there, and almost everyone I know relies on deep collaborations with NCAR scientists. It's end is unthinkable.

Oh no... Seeing the direct tweet is even more frightening. Every day is a new crisis, and the repercussions are unimaginable.

NCAR is quite literally our global mothership.

Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.

Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.

Unbelievable.

A deeply dangerous — and blatantly retaliatory action against Colorado — by the Trump administration.

NCAR is one of the most renowned scientific facilities in the WORLD — where scientists perform cutting-edge research everyday.

We will fight this reckless directive with every legal tool we have.

Most of the scientists at the nonprofit that I cofounded, including my two cofounders, came from NCAR. It’s hard to overstate the importance of this place for climate science.

The beautiful idea of NCAR, to improve understanding of our planet through a cooperative, shared and open intellectual team effort, is literally what has got me out of bed every morning for nearly two decades. This cannot, CANNOT be allowed to happen.

eu.usatoday.com/story/news/p...

Friends at NCAR, we're with you.

@ncar-ucar.bsky.social is a trailblazer in community modelling driven not by idealogy, but by open science. We share all our code, thoughts, ideas. These can't be shut down.

We'll fight and find every mechanism to support the ongoing CESM community.

I have been seeing posts today that NCAR might be shut down by the US government. This would be a tragic loss for climate science. They develop CESM, probably the most widely used climate model. I used it in the last paper I published!

The Trump regime wants to dismantle a world leading climate research center. Why? Because the US has become a petrostate where the government has been captured by fossil fuel interests.
They’re calling climate science “green new scam research”, in full denial of reality. 🤯

It’s simply not possible to overstate how important NCAR is to US and world science. We need to fight this with everything we’ve got.

NCAR is a unique & valuable asset - far more than a climate model, or observations, or technology, or training ground, or gathering space. It covers weather, space weather, data, climate, paleo-climate, and everything in-between. It's building is an icon, but it's iconic status goes far beyond that.

Postdoctoral Research Associate at University of Liverpool Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!

Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊

www.jobs.ac.uk/job/DPG117/p...

🌊 #Postdoc position available

📍 At WHOI with Dr. Le Bras

Analyse data from moored oxygen as part of the Overturning and Horizontal circulation of the Subpolar North Atlantic Program (GOHSNAP).

Requirements
✅ PhD in physical #oceanography

To apply: whoi.wd5.myworkdayjobs.com/en-US/WHOI-E...

Postdoctoral Scholar Program - Woods Hole Oceanographic Institution Eighteen-month Postdoctoral Scholar awards are offered to recipients of new or recent doctorates in the fields of chemistry, engineering, geology, geophysics, mathematics, meteorology, physics, and bi...

🌊Exciting opportunity @whoi.edu! The WHOI’s Postdoctoral Scholar Program supports innovative ocean science and interdisciplinary reseearch. If you are interested in marine microbiology, computational biology, biogeochemistry or modelling, get in touch! #Bioinformatics #Deoxygenation #Microbiology

Underwater Glacier-Guarding Walls Could Have Unintended Consequences - Eos Although they would likely impede the warm currents that melt glaciers, such walls would also likely block fish migration and nutrient upwelling, harming marine ecosystems and Greenland fisheries.

Could underwater walls keeping warm water away from glaciers be the key to limiting future ice melt? Not so fast, new research says.

Underwater Glacier-Guarding Walls Could Have Unintended Consequences - Eos Although they would likely impede the warm currents that melt glaciers, such walls would also likely block fish migration and nutrient upwelling, harming marine ecosystems and Greenland fisheries.

Underwater barriers might slow warm currents from melting Greenland’s glaciers, but not without hurting fisheries, @markinchina.bsky.social and colleagues point out in a recent commentary. eos.org/research-spo...

The primacy of dissolved organic matter to aquatic light variability Abstract. Absorption and scattering by optically active constituents (OACs) modify the sunlit aquatic light environment, facilitating the derivation of biogeochemical data products at scales spanning…

🗞️ New article in Biogeosciences #EGU by Henry F. Houskeeper and Stanford B. Hooker ⬇️
Read more:

High Antarctic coastal productivity in polynyas revealed by considering remote sensing ice‐adjacency effects Ocean color-based estimates of Antarctic net primary productivity (NPP) have indicated low nearshore productivity in ice-adjacent waters, contrasting with coupled physical–biogeochemical models. To u....

In pursuing this, my coauthors Jessie Turner, Alex Castagna, Henry Houskeeper, and Heidi Dierssen taught me a lot about more carefully considering satellite Chl products in optically challenging areas. And many thanks to the L&O Early Career Publication Honor for supporting publishing this work!

Two subplots, showing the median and IQR Chl % difference and NPP % difference between the L2gen and POLYMER Chl products as a function of distance from the coastline. Both show an exponential decay from the coastline to ~100 km from the coast, with Chl being a factor of 600% different at the coast, and NPP being a factor of ~70% different.

log-log scatterplot and linear regression showing the NPP% difference (using L2gen vs. POLYMER) vs. the mean open water area for each Antarctic coastal polynya. There is a strong linear relationship between polynya size and NPP % difference, with an R2 of 0.66.

This has major implications for our estimates of Antarctic coastal primary productivity, with large differences in NPP estimates for L2gen Chl products vs. those using an atmospheric correction less susceptible to adjacency (POLYMER, used by ESA OC-CCI). The effects are strongest in small polynyas.

Figure 1 from the paper, showing four subplots of maps of the west Antarctic shelf extending from the West Antarctic Peninsula to the Ross Sea. Figure caption: January 10-yr (2010–2019) mean (a) OBPG/L2gen Chl a (which shows low Chl near the coastline), (b) OBPG nFLH (which shows elevated nFLH near the coastline), (c) OC-CCI Chl a (which also shows high Chl near the coast, agreeing with the pattern in the nFLH), and (d) difference in Chl a products OC-CCI Chl a minus OBPG/L2gen Chl a, over the west Antarctic shelf (which shows a band of much higher Chl, ~5-10 ug/L, extending along the entire west Antarctic coastline).

🌊 I have a new paper out in L&O Letters! We show that ocean color-based estimates of chlorophyll concentrations within 100 km of the Antarctic coastline are severely underestimated when applying the standard NASA L2gen atmospheric processing. This is caused by adjacency effects from ice and snow.

Trump’s Cuts May Spell the End for America’s Only Antarctic Research Ship

An excellent article in the NYTimes about the impending demise of the last U.S. Antarctic research vessel, the N.B. Palmer, featuring US and overseas colleagues (including @polarrobs.bsky.social). Gift link:

www.nytimes.com/2025/08/22/c...

Florida’s ocean economy depends on science | Column From sharks to plankton, ocean life matters deeply to Florida.

It's not just Florida, the US ocean economy depends on science. Great piece by Dr. Dennis McGillicuddy, Woods Hole Oceanographic Institution (WHOI)!🧪🌊
www.tampabay.com/viewpoints/2...

Are technological fixes to climate change better 'solutions' than doing nothing?

This narrow framing ignores complex ecological risks & the undermining of climate action.

A more realistic framing is that geoengineering 'solutions' at best partially mitigate one problem by creating more risks 🌊 🐳 🧊

Excellent article explaining the situation relating to the only US Antarctic research icebreaker. Stopping research on why flow of some marine-based glaciers in Antarctica has accelerated, discharging increasing amounts of ice into the ocean, won't stop it happening. We'll just know less about it.

Excited to share new published work on Phaeocystis antarctica microbiomes! Given the world, I was hesitant to self-promote, but a key finding is P. antarctica phycosphere interactions should be studied in situ. Antarctic fieldwork is necessary! onlinelibrary.wiley.com/doi/full/10....
#microbialsky

New study illuminates how diatoms thrive in—and light up—the Southern Ocean An area of the remote Southern Ocean that's long confused ocean color satellites by reflecting large amounts of turquoise-colored light appears to be full of silica-rich diatoms, according to a new st...

🌊 New study reveals that silica-rich diatoms, not coccolithophores, drive bright satellite signals south of the Great Calcite Belt in the Southern Ocean

Diatom frustules mimic calcite reflectance; reshaping how we interpret ocean colour, plankton biogeog and carbon export

phys.org/news/2025-08...

Increased melt from Greenland’s most active glacier fuels enhanced coastal productivity - Communications Earth & Environment Melting from Greenland’s glaciers increases primary productivity in Qeqertarsuup Tunua by up to 40%, according to analysis of biogeochemical modelling.

🌊 New modeling study led by Mike Wood: Increasing fluxes of meltwater from Greenland fuel greater summer productivity in Disko Bay, Greenland. Subglacial discharge emerging from the glacier grounding line drives turbulent buoyant plumes that boost local productivity through nitrate upwelling.

Biological, Biogeochemical, Bio‐Optical, and Physical Variability of the Southern Ocean Along 150°W and Its Relevance to the Great Calcite Belt Particulate inorganic carbon (PIC) concentration was highest in the Great Calcite Belt (GCB) and south of 54°S, where biogenic silica (BSi) was also highest Optical backscatter by BSi exceeded ca...

🌊 New paper led by Barney Balch: High-reflectance waters south of 54°S in the Pacific dominated by diatoms, not coccolithophores as satellites suggest (biogenic silica backscattering exceeds calcite >10×). Unexpectedly, however, coccolithophore calcification rates were still elevated down to 60°S!