Alf Norkko

Yes - i think the Swedes have calculated 330 km3. Lining up for a major inflow event!

‘Profound impacts’: record ocean heat is intensifying climate disasters, data shows Oceans absorb 90% of global heating, making them a stark indicator of the relentless march of the climate crisis

‘Profound impacts’: record ocean heat is intensifying #climate disasters, data shows
Oceans absorb 90% of global heating, making them a stark indicator of the relentless march of the climate crisis
www.theguardian.com/environment/...

YouTube video by Federal Reserve Statement by Federal Reserve Chair Jerome H. Powell

Video message from Federal Reserve Chair Jerome H. Powell:
www.youtube.com/watch?v=KckG...
www.federalreserve.gov/newsevents/s...

The additional greenhouse gases in the atmosphere now cause about 33 Hiroshima bombs per second of additional heat to be radiated back down to Earth.

The Earth's Energy Imbalance is now ~10 Hiroshimas per second.

But who's counting.
bsky.app/profile/leon...

A path towards appropriate degradation experiments for assessing carbon sequestration potential of macroalgae We systematically reviewed literature on macroalgal degradation. To date, most degradation experiments are carried out in aquaria or shallow environments, span short timescales or rarely incorporate ...

🚨 New publication!! 🚨
Read the review paper by Lydia White & @alfnorkko.bsky.social, on how to experimentally assess carbon sequestration potential of macroalgae.
doi.org/10.1111/1365...

This review clearly shows that macroalgal decomposition rates vary significantly between experimental approaches and are severely underestimated when a refractory pool is not considered, impacting scaled-up estimates of macroalgal carbon export to the deep ocean 🌊🌱

A path towards appropriate degradation experiments for assessing carbon sequestration potential of macroalgae We systematically reviewed literature on macroalgal degradation. To date, most degradation experiments are carried out in aquaria or shallow environments, span short timescales or rarely incorporate ....

Check out our new review paper, championed by Lydia White, "A path towards appropriate degradation experiments for assessing carbon sequestration potential of macroalgae". Read it here: besjournals.onlinelibrary.wiley.com/doi/10.1111/... @coastclim.bsky.social @tvarminne.bsky.social #mCDR

‘Completely unexpected’: Antarctic sea ice may be in terminal decline due to rising Southern Ocean salinity Scientists once thought Antarctica might hold onto its sea ice as the world warmed. No longer.

Southern Ocean circulation reversal may have already happened. This is a surprise and scary stuff.

theconversation.com/completely-u...

Water Flows Downhill: How Looking “Upstream” Can Help Maintain A Healthy Sea Our planet is in trouble. We are losing plants, animals, and habitats, and the processes that link them are changing. Nature is becoming sick. People have been trying to fix this problem, but the situ...

New paper championed by Rebecca Gladstone-Gallagher et al for kids (with kids as reviewers) on the importance of connecting across ecosystems and human values
@tvarminne.bsky.social
@helsinki.fi
@aucklanduni.bsky.social
@coastclim.bsky.social

kids.frontiersin.org/articles/10....

DEBATT: Finland och Sverige måste sätta ett friskt hav främst Ekologisk hållbarhet är en förutsättning för ekonomiska och sociala värden i haven, skriver Alf Norkko och Christoph…

Ekologisk hållbarhet är en förutsättning för både ekonomiska och sociala värden – och måste sättas främst också i det kortsiktiga beslutsfattandet. Läs uppmaningen från @alfnorkko.bsky.social & Christoph Humborg @coastclim.bsky.social i @hbl.fi, med anledning av den pågående havskonferensen.

DEBATT: Finland och Sverige måste sätta ett friskt hav främst Ekologisk hållbarhet är en förutsättning för ekonomiska och sociala värden i haven, skriver Alf Norkko och Christoph…

Det är dags för Finland och Sverige att ta FNs havskonferens på allvar! @tvarminne.bsky.social @ostersjocentrum.bsky.social @coastclim.bsky.social @balticseacentre.bsky.social @helsinki.fi
www.hbl.fi/2025-06-07/f...

Marine biodiversity loss in Finnish coastal waters: Evidence and implications for management - Ambio Marine biodiversity loss poses significant ecological and socio-economic challenges. This paper examines how coastal biodiversity loss is expressed and outlines implications for management. Synthesizi...

New paper: Marine biodiversity is declining across Finnish coastal waters, with loss driven by eutrophication, climate change & seabed disturbance. Urgent action, better monitoring & bridging knowledge gaps are key to ecosystem recovery. #Biodiversity #BalticSea

link.springer.com/article/10.1...

Functional traits are moderate predictors of above‐ and below‐ground biomass in multispecies seagrass habitats Read the free Plain Language Summary for this article on the Journal blog.

🚨 NEW paper alert!
#Seagrass #functional #traits act as predictors of #biomass, albeit moderately. Study conducted across 1500 km coastline.
Main #biodiversity mechanism driving seagrass #biomass stock is through dominance.

@tvarminne.bsky.social @uwaoceans.bsky.social

doi.org/10.1111/1365...

It's gettin hot in here...

Yes! It is marvellous 😀

Check out our new paper on experimental manipulations in situ of #marine #heatwaves championed by @aquanorman.bsky.social ‬& Laura Kauppi @joannanorkko.bsky.social @coastclim.bsky.social @tvarminne.bsky.social @helsinki.fi

Hot Water, Busy Seafloor: How Marine Heatwaves Amplify Nutrient Cycling Norman Göbeler, Laura Kauppi, Alf Norkko, Joanna Norkko. This is a plain language summary of a Functional Ecology article which can be found here. Marine heatwaves—periods of abnormally high water …

Also check out our summary blog: “Hot Water, Busy Seafloor: How Marine Heatwaves Amplify Nutrient Cycling”
fesummaries.wordpress.com/2025/03/07/h...

Laura Kauppi, @alfnorkko.bsky.social, @joannanorkko.bsky.social, Nottbeck Foundation, Roth Finland Oy, @coastclim.bsky.social, @tvarminne.bsky.social

Are the Oceans Reaching Their Limit? Join the Discussion at #ACCCImpactWeek on April 22. Top researchers from CoastClim participate @alfnorkko.bsky.social and Anna Villnäs. Register by April 9, the event is free of charge.

'You look up and see light coming through': The divers venturing under the ice in the name of science It is a world cut off from our own by thick blankets of floating ice, but some scientists are taking the plunge to learn how these frozen depths are changing.

Check out this BBC story, covering our first Polar scientific diving course run by Edd Stockdale at the Finnish Scientific Diving Academy in 2024, building capacity for collecting data to understand rapid changes in polar regions. @tvarminne.bsky.social @helsinki.fi

www.bbc.com/future/artic...

NZ hopes to store carbon in marine ecosystems – but some are so degraded they’re already a source of emissions Seagrass meadows, mangroves and kelp forests are carbon sinks. Restoring or protecting them addresses both biodiversity loss and the climate crisis.

Read a news article written by our New Zealand collaborator Prof. Simon Thrush. He writes about the importance of the findings from the joint CoastClim- @aucklanduni.bsky.social field campaign that was conducted earlier this year.

How often do we explore temporal context dependece in ecological pattern and process? Not nearly enough!
Coastal ecosystem functions depend on biodiversity—but temporal context shapes how benthic species influence solute fluxes, with effects varying by season, species & site. Timing is key!

Congratulations!! :-)

Finally in my hands! Graduated with distinction!🎓🌊🎉 Huge thanks to @dansmale1.bsky.social for an engaging defense discussion, my supervisors J. Norkko and @alfnorkko.bsky.social, and colleagues and supporters NottbeckFdn @coastclim.bsky.social RothFinland.
Link to thesis: hdl.handle.net/10138/587464

Looking for a PhD student to join us - focusing on quantifying GHG across coastal seascapes. Please help spread the word!

📢 3-year Postdoc Opportunity ❗❗ #FoodWebs

I am seeking a postdoc to reconstruct energy fluxes in food webs using gut DNA and eDNA in mesocosms under heatwave scenarios
@tvarminne.bsky.social @coastclim.bsky.social

📅 31. of Jan. 2025

➡️ jobs.helsinki.fi/job/Hanko-3-...

Please share post ❗❗

Oooh. This looks very interesting and cool site... (ping @alfnorkko.bsky.social )

Thanks for visiting. Awesome job with public defense!

Sorry @dansmale1.bsky.social - still trying to learn tagging!

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