#seaice — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #seaice, aggregated by home.social.
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13 min ago @ Seattle, WA, USA
https://iceout.org/en/reportInfo/145978
#SeaICE #SeattleICE #ICE #Seattle -
Sea ice extent in both the Chukchi and Beaufort seas is at the lowest of the season, though it's still the highest for Sept 12 since 2018 in NSIDC data. The ongoing stormy weather is likely to increase the open water area at least a bit in the next few days. @Climatologist49 @ZLabe
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Sea ice extent in both the Chukchi and Beaufort seas is at the lowest of the season, though it's still the highest for Sept 12 since 2018 in NSIDC data. The ongoing stormy weather is likely to increase the open water area at least a bit in the next few days. @Climatologist49 @ZLabe
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Sea ice extent in both the Chukchi and Beaufort seas is at the lowest of the season, though it's still the highest for Sept 12 since 2018 in NSIDC data. The ongoing stormy weather is likely to increase the open water area at least a bit in the next few days. @Climatologist49 @ZLabe
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Sea ice extent in both the Chukchi and Beaufort seas is at the lowest of the season, though it's still the highest for Sept 12 since 2018 in NSIDC data. The ongoing stormy weather is likely to increase the open water area at least a bit in the next few days. @Climatologist49 @ZLabe
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Sea ice extent in both the Chukchi and Beaufort seas is at the lowest of the season, though it's still the highest for Sept 12 since 2018 in NSIDC data. The ongoing stormy weather is likely to increase the open water area at least a bit in the next few days. @Climatologist49 @ZLabe
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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.
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Pressure ridge (ice) (Glaciology 🗻)
A pressure ridge is a linear pile-up of sea ice fragments formed in pack ice by accumulation in the convergence between floes in an oceanic or coastal environment. Such a pressure ridge develops in an ice cover as a result of a stress regime established within the plane of the ice. Within sea ice expanses, pressure ridges originate from the int...
https://en.wikipedia.org/wiki/Pressure_ridge_(ice)
#PressureRidge #SeaIce #Landforms #Glaciology #Geomorphology
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#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."
Archived version:
https://archive.ph/E1Dlw#ClimateChange #TippingPoint #GlobalWarming #WarmingOceans #ArcticEcosystems #SeaIce #OceansAreLife
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#FYI #ClimateGenn #Antarctic #Antarctica #seaIce #landIce #glacierCalving
#NickBreeze interviews dr. #NaomiOchwat on the fate of the #Hektoria #Glacier
https://www.youtube.com/watch?v=DwmfliWvoOo
#climate #ClimateScience #climatechange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption #globalWarming #globalHeating #ExtremeWeather
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Global Views of ICESat-2 Data
#Clouds #GlobalVegetation #ICESat2 #IceDepth/Thickness #LandIce #SeaIce #TerrainElevation
⏩ 1 new picture and 1 new video from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=6&user=OptimusPrimeBot&ilshowall=1&offset=20260310125704
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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
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🚧Urgent notice to all SSMIS product users 🚧
We've just been informed that #SSMIS from the US #DMSP satellite will stop to be distributed on Monday 30th June 2025.
Consequently, we advise SSMIS only-based #SeaIce products users to urgently change.
Find more information and guidance on our website :
https://osi-saf.eumetsat.int/community/stories/implications-end-ssmis-data-osi-saf-products
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🚧 Access to SSMIS data from the US #DMSP satellites is becoming less reliable as this satellite program is reaching its end. Data will become scarser with the time until a full stop in 09/2026. Several OSI SAF #SeaIce products are affected.
More information: https://osi-saf.eumetsat.int/community/stories/implications-end-ssmis-data-osi-saf-products
this story will be maintained up to date regularly -
Some of the most unusual #heat this summer occurred in #Antarctica, where plumes of warm air disrupted the deep freeze of the 6-month #PolarNight. #Temperatures on the continent spiked about 28°C (50°F) above usual levels, & the surrounding #SeaIce shrank to nearly unprecedented lows. The changes in Antarctica are especially eye-opening, Buontempo said, because the region has historically been isolated from the rest of the warming #planet by a strong polar vortex & the swirling Southern Ocean.
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Long-Term Satellite Tracking Reveals Patterns Of Long-Distance Dispersal In Juvenile And Adult Arctic Foxes (Vulpes Lagopus)
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https://royalsocietypublishing.org/doi/10.1098/rsos.220729 <-- shared paper
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#GIS #spatial #mapping #remotesensing #radiocollar #tracking #arcticfox #canada #arctic #biology #ecosystems #habitat #monitoring #research #distribution #competition #predator #ecology #satellite #collars #wildlife #WhereAnimalsGo #predator #predators #HighArctic #seaice #circumpolar #geography #publichealth #gischat #fox #foxes
