#seaice — Public Fediverse posts

4 min ago @ 10616 16th Ave SW, Seattle, WA 98146, USA

https://iceout.org/en/reportInfo/144954
#SeaICE #SeattleICE #ICE #Seattle

29 min ago @ 8500 Linden Ave N, Seattle, WA 98103, USA

https://iceout.org/en/reportInfo/144934
#SeaICE #SeattleICE #ICE #Seattle

2 min ago @ 163 I-5, Seattle, WA, USA

https://iceout.org/en/reportInfo/144809
#SeaICE #SeattleICE #ICE #Seattle

14 min ago @ QFC, Holman Road Northwest, Seattle, WA, USA

https://iceout.org/en/reportInfo/144746
#SeaICE #SeattleICE #ICE #Seattle

...and the big dog. Longest / biggest, although lower operational risk (slightly) than the stretch north option.

Bearing in mind that it was also proposing putting an instrumented aircraft pretty close to an international marine boundary, so the political landscape forms part of planning.

#arctic #seaice #research

...here's the "stretch north" option - longer, riskier.

#arctic #seaice #research

That time I asked for aerial imagery supporting an Arctic expedition, timed to coincide with field sampling / drone flights / already planned satellite overpasses. This is one map (of 3), one possible flight path - the "small scenario".

While it had a solid science rationale supported by existing publications - and attracted a lot of big names to the table - the support request was denied.

#arctic #seaice #remotesensing #funding

5 min ago @ 9450 8th Ave SW, Seattle, WA 98106, USA

https://iceout.org/en/reportInfo/144514
#SeaICE #SeattleICE #ICE #Seattle

@ZLabe Promoting to #ClimateChange #SeaIce #Arctic

In August 2026, the #SeaIce global extent was 7.2% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 12th lowest monthly mean, with 9.1% less extent than normal (-617,526km²)
- #Antarctic, 4th lowest monthly mean, with 6.5% less exent than normal (1,178,424km²)

for more: https://osi-saf.eumetsat.int/sea-ice-index

In August 2026, the #SeaIce global extent was 7.2% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 12th lowest monthly mean, with 9.1% less extent than normal (-617,526km²)
- #Antarctic, 4th lowest monthly mean, with 6.5% less exent than normal (1,178,424km²)

for more: https://osi-saf.eumetsat.int/sea-ice-index

In August 2026, the #SeaIce global extent was 7.2% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 12th lowest monthly mean, with 9.1% less extent than normal (-617,526km²)
- #Antarctic, 4th lowest monthly mean, with 6.5% less exent than normal (1,178,424km²)

for more: https://osi-saf.eumetsat.int/sea-ice-index

In August 2026, the #SeaIce global extent was 7.2% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 12th lowest monthly mean, with 9.1% less extent than normal (-617,526km²)
- #Antarctic, 4th lowest monthly mean, with 6.5% less exent than normal (1,178,424km²)

for more: https://osi-saf.eumetsat.int/sea-ice-index

In August 2026, the #SeaIce global extent was 7.2% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 12th lowest monthly mean, with 9.1% less extent than normal (-617,526km²)
- #Antarctic, 4th lowest monthly mean, with 6.5% less exent than normal (1,178,424km²)

for more: https://osi-saf.eumetsat.int/sea-ice-index

Sea ice in the Beaufort and Chukchi Seas continues melt, with the combined extent slightly higher than last year but well below the 1991-2020 median in NSIDC data. The higher concentration sea ice north of the northeast Alaska coast is an area of thicker multi-year ice that moved southwest in the spring from the Canadian High Arctic in the ocean currents. @Climatologist49 @ZLabe

#akwx #Arctic #SeaIce

Meereisflächen der Arktis und Antarktis im Juli 2026: https://www.wetterkontor.de/de/wetternews.asp

#wetter #météo #weather #climate #climatechange #Juli2026 #Nachrichten #Klima #Copernicus #seaice #Meereis #Arktis #Antarktis

Meereisflächen der Arktis und Antarktis im Juni 2026: https://www.wetterkontor.de/de/wetternews.asp

#wetter #météo #weather #climate #climatechange #Juni2026 #Nachrichten #Klima #Copernicus #seaice #Meereis #Arktis #Antarktis

#SeaIce loss in the #Arctic has triggered a critical #TippingPoint that's destroying the food chain

Story by Sascha Pare, June 8, 2026

"The Arctic Ocean has crossed a tipping point that is wreaking havoc on the region's food chain, with potentially dire consequences for commercial fishing and the ocean's capacity to soak up carbon, a new study reports.

"Scientists found that vast areas of melting sea ice in the Arctic are leading to a significant reduction in nitrate, a key nutrient that forms the base of the marine food web and thus underpins important regional fisheries. As the ice disappears, more light hits the water's surface, promoting the growth of microscopic, plant-like organisms called phytoplankton. When phytoplankton die, their cells sink to the seafloor and are decomposed by nitrate- and oxygen-consuming bacteria.

"The new study, published May 28 in the journal Communications Earth & Environment, found that the bacteria are consuming more nitrate than the Arctic ecosystem can withstand.

"This effect, known as 'denitrification,"' is irreversible under current climate conditions because we have passed a threshold where so much sunlight reaches the ocean that it's supercharging phytoplankton's productivity, said Marta Santos-García, a doctoral student of Arctic marine biogeochemistry at the University of Edinburgh in Scotland and the first author of the study.

" 'Even if sea ice were to increase temporarily, the Arctic nutrient system responds over much longer timescales,' Santos-García told Live Science in an email. 'Short-term increases in sea ice would be unlikely to rapidly reverse the decline in nitrate inventories, which may take much longer to recover.'

"Dropping nitrate levels may eventually come back to bite phytoplankton, because these tiny organisms need nitrate to carry out photosynthesis. As a result, the transition to a low-nitrate regime could accelerate #ClimateChange, as nitrate plays an essential role in the ocean's biological pump, which takes #CarbonDioxide from the atmosphere via photosynthesis and locks it away at depth when #phytoplankton and the animals that eat it die.

" 'With nutrients such as nitrate in limited supply this mechanism cannot work effectively,' Santos-García said.

"To understand ecosystem changes in the Arctic, the researchers analyzed two decades of data from the Fram Strait, a passage between Greenland and Svalbard, Norway, that is the main gateway through which Arctic waters flow into the Atlantic Ocean. They found a sharp decline in nitrate levels in this region after 2009, which coincided with a dramatic reduction in Arctic sea ice and a gradual shift in phytoplankton communities toward smaller species that can cope with low nutrient levels.

" 'Shifts towards smaller phytoplankton have already been observed in parts of the Arctic, although these changes have not previously been linked to nitrate losses,' Santos-García said. 'This matters because smaller phytoplankton are generally less efficient at transferring energy up the food web. More of the energy is recycled within microbial communities rather than being passed on to larger zooplankton, fish, seabirds, and marine mammals.'

"Phytoplankton sit at the very bottom of the marine food chain, so the impacts of nitrate depletion will ripple through the Arctic ecosystem, impacting species at the highest levels. This could also affect fisheries in regions that depend on Arctic nutrient exports, such as the North Atlantic. But pinpointing what will happen in ecosystems downstream of the Arctic Ocean requires more research, Santos-García said.

"For years, researchers thought the long-term impact of sea ice loss in the Arctic would be an increase in phytoplankton, because more organisms can bathe in sunlight and multiply when the sea ice extent is small. However, the increase in phytoplankton since 2009 has depleted nitrate levels enough to limit future phytoplankton growth.

"Whereas phytoplankton proliferation used to be limited by how much sunlight reached surface waters, it is now controlled by nitrate levels. Therefore, nitrate must be considered as a key driver of future changes in the Arctic, Santos-García said.

" 'As nitrate is the nutrient that limits Arctic productivity, understanding these changes is therefore important not only for Arctic communities and ecosystems, but also for improving projections of future climate change,' she said."

Source:
https://www.msn.com/en-us/weather/topstories/sea-ice-loss-in-the-arctic-has-triggered-a-critical-tipping-point-that-s-destroying-the-food-chain/ar-AA257Nx3?ocid=winp2fptaskbarhoverent&cvid=fc8829987c62417bd8585d854cb2ec7b&ei=5

Archived version:
https://archive.ph/E1Dlw

#ClimateChange #TippingPoint #GlobalWarming #WarmingOceans #ArcticEcosystems #SeaIce #OceansAreLife

Meereisflächen der Arktis und Antarktis im April 2026: https://www.wetterkontor.de/de/wetternews.asp

#wetter #météo #weather #climate #climatechange #April2026 #Nachrichten #Klima #Copernicus #seaice #Meereis #Arktis #Antarktis

We are excited to announce the official release of two Sea-Ice climate products on next Monday (04/05):
- Our Global Sea-Ice Concentration Interim Climate Data Record (AMSR) https://osi-saf.eumetsat.int/products/osi-438
This product, together with the AMSR Climate Data Record it complements will provide a coverage of #SeaIce concentration, retrieved from #AMSR sensors from 01/06/2002 to present.
More info on https://osi-saf.eumetsat.int/community/list-of-service-messages/operational-release-global-sea-ice-concentration-interim-climate
👇 1/3

RE: https://fediscience.org/@Ruth_Mottram/116250388094443741

For the morning team: We're looking for scientists excited to work at the cutting edge of Polar science with the latest high resolution climate models and Earth Observation data.
Funding support available for travel, accomodation + food costs covered

#Arctic #Antarctic #Polar #ClimateScience #ClimateModelling #EarthObservation #Climate #IceSheets #SeaIce #Permafrost

Meereisflächen in Arktis und Antarktis im Februar 2026: https://www.wetterkontor.de/de/wetternews.asp

#Meereis #seaice #climate #Klima #Februar

Meereisflächen in Arktis und Antarktis im Oktober 2025: https://www.wetterkontor.de/de/wetternews.asp

#wetter #météo #weather #climate #climatechange #Oktober #2025 #Arktis #Antarktis #seaice

Great news from the Japan Aerospace Exploration Agency #JAXA : the firsts data from #GOSAT-GW / #AMSR-3 where published ! Our #SeaIce team is looking forward to work with these data!
https://global.jaxa.jp/press/2025/09/20250905-1_e.html

https://youtu.be/cZCZEFloND4?si=J1GZovFOp-qps5en

🛰️ NEW SEA-ICE PRODUCT 🛰️
Our #SeaIce team at #MetNorway and #DMI has been working hard to ensure you reliable and lasting access to sea ice concentration Climate Data Record.
Today we release as demonstrational product of a new #AMSR-2 based Interim CDR (OSI-438)

https://osi-saf.eumetsat.int/community/list-of-service-messages/sea-ice-concentration-icdr-demonstrational-product

🚧 The US #DMPS notified us yesterday that the #SSMIS data would still be distributed for another month, and be extended to (no later than) 31/07/2025. We still strongly invite our SSMIS #SeaIce only products users to switch to our #AMSR-2 based products.

For more information, read our dedicated page on our website :

https://osi-saf.eumetsat.int/community/stories/implications-end-ssmis-data-osi-saf-products

Today is again an important day for our #seaice community, as #JAXA is about to launch #GOSAT-W. Aboard this satellite is the passive microwave radiometer #AMSR-3 that will provide us with key data for our future sea-ice concentration products.
がんばって JAXA !
https://universeodon.com/@revesdespace/114759749684802821

Tracking Ice Floes

To understand why some sea ice melts and other sea ice survives, researchers tracked millions of floes over decades. This herculean undertaking combined satellite data, weather reports, and buoy data into a database covering nearly 20 years of data. With all of that information, the team could track the changes to specific pieces of ice rather than lumping data into overall averages.

They found that an ice floe’s fate depended strongly on the route it took: ice that slipped from its starting region into warmer, more southern regions was likely to melt. They also saw region-specific effects, like that thick sea ice was more likely to melt in the East Siberian Sea’s summer, possibly due to warmer currents. The comprehensive, fine-grained analyses possible with this ice-tracking technique offer a chance to understand why some Arctic regions are more vulnerable to warming than others. (Image credit: D. Cantelli; research credit: P. Taylor et al.; via Eos)

#climateChange #Eulerian #fluidDynamics #Lagrangian #melting #physics #planetaryScience #science #seaIce

Polarstern reaches North Pole https://www.awi.de/en/about-us/service/press/single-view/polarstern-erreicht-nordpol.html

"Five weeks after setting sail from #Tromsø, #Norway, the @awi #ResearchVessel #Polarstern makes a stop at the northernmost point on Earth. Here, too, the international team of #researchers is investigating the coupling between #SeaIce, the #ocean and its life, including within the #DeepSea... the team has discovered an amazing #biodiversity at a previously unmapped #seamount at 1500 meters depth, under the ice."

#ClimateChange: Due to #SeaIce retreat, #zooplankton could remain in the deep longer
https://phys.org/news/2023-08-due-sea-ice-retreat-zooplankton-deep.html #Polarstern #ResearchVessel #ClimateCrisis #Arctic @awi

Sea-ice decline could keep zooplankton deeper for longer https://www.nature.com/articles/s41558-023-01779-1

"sunlight is now penetrating deeper and deeper into the #ocean. Since marine zooplankton respond to the available light, this is also changing their behavior—especially how the tiny organisms rise and fall within the water column."

The median date for #BeringSea maximum #SeaIce extent is still above a week away, so there's still time for ice to expand significantly IF there is a sustained period of north to northeast winds. However, it's now virtually certain that the 2023 maximum extent will be lower than the 1991-2020 average. #akwx #Arctic #ClimateMonitoring
@Climatologist49 @ZLabe

We'll be tracking the Bering Sea ice extent for the seasonal maximum in the coming weeks. It's possible the max extent happening, now as south to southeast winds are coming this weekend and will continue into next week. But as the graphic shows, it's not uncommon for max #BeringSea #seaice extent to occur in late March or even early April.
#akwx #Arctic
@Climatologist49 @ZLabe