#SeaLevel

2025-04-26

Atmospheric shifts accelerate Patagonian glacier loss, contributing to sea-level rise phys.org/news/2025-04-atmosphe Why are Patagonian glaciers rapidly losing mass? sciencedaily.com/releases/2025

#environment #glaciers #sea #SeaLevel #SeaLevelRise

2025-04-21
Autumn sunset sailing at Engabreen, part of Svartisen/Black Ice Glacier

The secondary glacier Engabreen from the main Black Ice Glacier stretches an arm as low as 20 meter over sea level.

That is the closest to sea level for any glacier in mainland Europe.

West Svartisen Glacier is the 2nd largest glacier in Norway, and the white on top of all the mountains in this picture is this glacier main plateau.

https://en.m.wikipedia.org/wiki/Svartisen

#sunset #glacier #europeslowestlaying #svartisen #svartisenglacier #blackiceglacier #northlandcounty #sailing #2018CE #sealevel #Nordland #Norway #Engabreen
Photo shows a fiord surrounded by mountains. On top of the central one there is a white rom representing a large glacier. An arm of the glacier is stretching down the mountainside towards the water. On the salt water just beside where the glacier arm is stretching there is a small sailboat. The photo is taken from a point framed by trees. The fiord is deep cold blue. The sky is lightly clouded blue. The colours in the mountain are colourful as the fall colours are emerging in the trees and bushes.
2025-04-19

In episode 5 of the Raised Beaches Podcast, I highlighted five papers. These cover the subjects of determining past sea level position from beach ridges, Holocene sea level, an orbital theory of interglacials, and two paleo sea level compilations. Links to the papers are in this thread!

#SeaLevel #ClimateChange #Paleoclimate

youtube.com/watch?v=TfQK3evJS2

Thomas Barriohomohortus
2025-04-14

@LouisY @boeken

La mer des Wadden face à l’élévation du niveau de la mer : un patrimoine en péril

🌊 La , site unique inscrit au patrimoine mondial, est menacée par l'élévation du niveau de la mer. L'accrétion des sédiments pourrait être insuffisante pour compenser cette montée, rendant ses estrans impraticables à terme. Une gestion durable est cruciale pour préserver cet écosystème fragile.

homohortus31.wordpress.com/202

Planetary Ecologistplanetaryecologist
2025-04-12

North West Shelf Operational Oceanographic System (Oceanography 🌊)

The North West Shelf Operational Oceanographic System monitors physical, sedimentological and ecological variables for the North Sea area. NOOS is operated by partners from the nine countries bordering the extended North Sea and European North West Shelf; Belgium, De...

en.wikipedia.org/wiki/North_We

Thomas Barriohomohortus
2025-04-11

@primonatura La liste des vainqueurs ici : carbonmajors.org/Entities ... en ce qui concerne la , nous sommes représentés en vingtième position par avec des de 17,943 MtCO2e

"No ACC slowdown has actually been observed yet in the real world, but the study shows a concerning trend."
The paper this article is about is actually from March news.mongabay.com/short-articl

A prose summary by the authors: theconversation.com/melting-an

paper iopscience.iop.org/article/10.

ACC = Antarctic circumpolar current. It races around the continent, mixes warm surface water with deeper cold water , hides our CO2 in the process, is also a driver in the AMOC.

So, reading that sentence, I misunderstood it to mean that it never slowed in #paleoclimate either. But if it is in part salinity-driven and if meltwater influx slows it down as the authors found in their super-high-resolution model, then surely it did happen in the past, as well.
And in a past from when ~reliable proxies would exist, if one knows what to look for, of course.
If the ACC didn't slow down during the last 1mio years, okay. Maybe, salinity and cold temperature stayed suitable then.
But from #sealevel reconstructions like Miller et al 2020, it is known that Antarctica shed and regrew a lot of ice when temperatures were higher than in the last 1mio years.

And 15mio years ago, the continent was ice free for the last time. Between then and 3mio years ago, lotsa melt & regrowth occurred, meaning lotsa periods with a potentially slow ACC in salty but too-warm waters.
What to look for tho? What else does occur and leave a footprint when ACC slows?

Ah! The mixing between ocean basins is slowed or paused.
A temperature spike in the Indian #ocean for example takes longer to propagate into the Pacific, longer than a comparable spike takes in a ACC at full-speed. Maybe a stupid example because such a spike would be too short... something else then...
ah! The Southern Annular Mode would change with a slow ACC, I bet. Maybe going from annual changes to decadal changes or such like.
And the SAM should be detectable in lake sediment in Australia. Maybe even sediment from that dry salt lake North of Adelaide that gets flooded every 50yrs or so . Maybe, with a slow ACC, that salt lake is flooded permanently - or never.
Cool.
Did researchers drill a 3-15mio year sediment core in an Australian lake?

Benjamin Carr, Ph.D. 👨🏻‍💻🧬BenjaminHCCarr@hachyderm.io
2025-03-28

Melting #glaciers caused almost 2cm of #sealevelrise this century, study reveals
Decades-long research shows world’s glaciers collectively lost 6.542tn tonnes of #ice between 2000 and 2023, causing an 18mm (0.7in) rise in global #sealevel.
Regional losses were highly variable; the Antarctic and subantarctic islands lost 2% of their volume but central Europe’s glaciers lost 39%.
36% more ice having melted between 2012 and 2023 compared with the previous decade.
theguardian.com/environment/20
#climate

Zeitgeisty Aphorismszeitgeisty
2025-03-27
Daniel Pomarèdepomarede
2025-03-25

Satellite Record of Sea Level Rise From 1993 to 2024

This NASA-led analysis is based on a sea level dataset featuring more than 30 years of satellite observations, starting with the U.S.-French TOPEX/Poseidon mission, which launched in 1992.

Credit: NASA/JPL-Caltech
jpl.nasa.gov/images/pia26189-s

A plot of the satellite record of the global sea level rise as a function of time, starting in 1993. The total rise since 1993 is 10.1 cm. The expected rate is 0.43 cm/year. The 2024 rise is 0.59 cm.
2025-03-20

Hijma et al provide a high resolution reconstruction of sea level change during the early Holocene from the North Sea. They find there were two periods of relatively high sea level rise, at around 10.3 and 8.3 ka.

#SeaLevel #Holocene #GlacialIsostaticAdjustment #IceSheets

doi.org/10.1038/s41586-025-087

2025-03-20

Sea level rise after the last ice age revealed by new geological data phys.org/news/2025-03-sea-ice-

#environment #sea #seaLevel #SeaLevelRise

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