#seaice — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #seaice, aggregated by home.social.
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One of the many presentations at #scar2026 showing @ZLabe's #seaice graphs to illustrate the scale of anomaly in #antarctic sea ice in recent years 👍.
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One of the many presentations at #scar2026 showing @ZLabe's #seaice graphs to illustrate the scale of anomaly in #antarctic sea ice in recent years 👍.
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The Third World Ocean Assessment
#WOA IIISince the publication of the second World Ocean Assessment, significant changes have taken place in high-latitude sea ice. #Arctic #SeaIce continues to decline, and an ice-free Arctic in September is likely within the next few decades. Meanwhile, Antarctic sea ice, which had gradually in creased from 1979 to 2015, has rapidly declined since 2016, possibly indicating a regime shift.
The sea level continues to rise at increasing rates, from less than 2.0 mm per year prior to 2015 to 4.3 mm per year in 2023. Tropical seas are rising more rapidly due to thermal expansion.
> #SeaLevelRise doubled within the last 10 years
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The Third World Ocean Assessment
#WOA IIISince the publication of the second World Ocean Assessment, significant changes have taken place in high-latitude sea ice. #Arctic #SeaIce continues to decline, and an ice-free Arctic in September is likely within the next few decades. Meanwhile, Antarctic sea ice, which had gradually in creased from 1979 to 2015, has rapidly declined since 2016, possibly indicating a regime shift.
The sea level continues to rise at increasing rates, from less than 2.0 mm per year prior to 2015 to 4.3 mm per year in 2023. Tropical seas are rising more rapidly due to thermal expansion.
> #SeaLevelRise doubled within the last 10 years
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Your monthly global #seaice status, right on time for #scar2026.
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Your monthly global #seaice status, right on time for #scar2026.
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Sea ice melt in the Beaufort and Chukchi Seas accelerated in the past week in NSIDC data, though extent remains well above the 1991-2020 median. That said, ice is still delaying barge traffic to Utqiaġvik, Alaska and the Northwest Passage remains closed to non-ice hardened vessels. @Climatologist49 @ZLabe
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Sea ice melt in the Beaufort and Chukchi Seas accelerated in the past week in NSIDC data, though extent remains well above the 1991-2020 median. That said, ice is still delaying barge traffic to Utqiaġvik, Alaska and the Northwest Passage remains closed to non-ice hardened vessels. @Climatologist49 @ZLabe
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Sea Surface Height Anomaly (SSHA) - Updated weekly
#ClimateChange #Ocean #SeaIce #SeaSurfaceHeightAnomaly
⏩ 1 new picture and 1 new video from NASA (SVS) https://commons.wikimedia.org/w/index.php?search=incategory%3A%22NASA+SVS+files+uploaded+by+OptimusPrimeBot%22&sort=create_timestamp_desc&ns6=1
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Sea Surface Height Anomaly (SSHA) - Updated weekly
#ClimateChange #Ocean #SeaIce #SeaSurfaceHeightAnomaly
⏩ 1 new picture and 1 new video from NASA (SVS) https://commons.wikimedia.org/w/index.php?search=incategory%3A%22NASA+SVS+files+uploaded+by+OptimusPrimeBot%22&sort=create_timestamp_desc&ns6=1
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In July 2026, the #SeaIce global extent was 7.8% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 6th lowest monthly mean, with 9.6% less extent than normal (-878,322 km²)
- #Antarctic, 5th lowest monthly mean, with 6.4% less exent than normal (-1,044,619km²)
for more: https://osi-saf.eumetsat.int/sea-ice-index
#ClimateChange #OSISAF @eumetsat -
In July 2026, the #SeaIce global extent was 7.8% below 1991-2020 mean. Since the beginning of records (1978):
- #Arctic, 6th lowest monthly mean, with 9.6% less extent than normal (-878,322 km²)
- #Antarctic, 5th lowest monthly mean, with 6.4% less exent than normal (-1,044,619km²)
for more: https://osi-saf.eumetsat.int/sea-ice-index
#ClimateChange #OSISAF @eumetsat -
Sea ice extent as of August 1 in the Chukchi and Beaufort Seas north and northwest of Alaska is the seventh highest in the satellite era (since 1979) and higher than any year since 2000 in NSIDC data. For the third year since 2023, ice scraps have moved in the current into the western Bering Strait.
@Climatologist49 @ZLabe -
Sea ice extent as of August 1 in the Chukchi and Beaufort Seas north and northwest of Alaska is the seventh highest in the satellite era (since 1979) and higher than any year since 2000 in NSIDC data. For the third year since 2023, ice scraps have moved in the current into the western Bering Strait.
@Climatologist49 @ZLabe -
The Chukchi Sea July 2026 average daily sea ice extent was the highest of any July since 1994 (though 1998, 1999 and 2000 were only slightly lower). After several years with very low ice extent in the 2010s, the 2020s (so far) have a bit of a recovery of mid-summer sea ice extent northwest of Alaska. Data courtesy NSIDC. @Climatologist49 @ZLabe
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The Chukchi Sea July 2026 average daily sea ice extent was the highest of any July since 1994 (though 1998, 1999 and 2000 were only slightly lower). After several years with very low ice extent in the 2010s, the 2020s (so far) have a bit of a recovery of mid-summer sea ice extent northwest of Alaska. Data courtesy NSIDC. @Climatologist49 @ZLabe
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End-of-July Arctic sea ice extent on the Atlantic side at record low levels, while on the Pacific side ice extent is more typical of the 1990s. Details in the latest from theAlaska and Arctic Climate newsletter. #Arctic #SeaIce #Climate 1/2
alaskaclimate.substack.com/p/late-july-... -
End-of-July Arctic sea ice extent on the Atlantic side at record low levels, while on the Pacific side ice extent is more typical of the 1990s. Details in the latest from theAlaska and Arctic Climate newsletter. #Arctic #SeaIce #Climate 1/2
alaskaclimate.substack.com/p/late-july-... -
End-of-July Arctic sea ice extent on the Atlantic side is at record low levels , while on the Pacific side, ice extent is more typical of the 1990s. Details on the tale of two Arctics in the latest from the Alaska and Arctic Climate newsletter. @Climatologist49
https://alaskaclimate.substack.com/p/late-july-2026-arctic-sea-ice-update
https://alaska-arctic-climate.beehiiv.com/p/late-july-2026-arctic-sea-ice-update
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End-of-July Arctic sea ice extent on the Atlantic side is at record low levels , while on the Pacific side, ice extent is more typical of the 1990s. Details on the tale of two Arctics in the latest from the Alaska and Arctic Climate newsletter. @Climatologist49
https://alaskaclimate.substack.com/p/late-july-2026-arctic-sea-ice-update
https://alaska-arctic-climate.beehiiv.com/p/late-july-2026-arctic-sea-ice-update
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The Formation and Movement of Nilas Ice in the Baltic Sea
📰 Original title: Watch the Baltic Sea Breathe Under a Sheet of Ice
🤖 IA: It's not clickbait ✅
👥 Users: It's not clickbait ✅View full AI summary https://en.killbait.com/the-formation-and-movement-of-nilas-ice-in-the-baltic-sea.html?utm_source=mastodon_world&utm_medium=social&utm_campaign=killbait.mastodon_world
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Sea ice in the Chukchi Sea remains well above the 1991-2020 and amazingly is the highest for the this point in the season since 1994 in NSIDC data. This week ice cleared to create, for the first time this season, an open water path to Utqiaġvik, Alaska. Ice extent in the Beaufort Sea is the highest since 2006. @Climatologist49 @ZLabe
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Sea ice in the Chukchi Sea remains well above the 1991-2020 and amazingly is the highest for the this point in the season since 1994 in NSIDC data. This week ice cleared to create, for the first time this season, an open water path to Utqiaġvik, Alaska. Ice extent in the Beaufort Sea is the highest since 2006. @Climatologist49 @ZLabe
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Arctic Today with a sea ice story. Always a plus to be in the same story as @ZLabe 🙂
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Arctic Today with a sea ice story. Always a plus to be in the same story as @ZLabe 🙂
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Dramatic drop in #Arctic #seaice levels puts an end to hopes of short-term recovery | The Independent
https://www.independent.co.uk/climate-change/news/arctic-sea-ice-decline-2025-b3018642.html
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Dramatic drop in #Arctic #seaice levels puts an end to hopes of short-term recovery | The Independent
https://www.independent.co.uk/climate-change/news/arctic-sea-ice-decline-2025-b3018642.html
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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
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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
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Sea ice concentration (Remote sensing 🛰️)
Sea ice concentration is a useful variable for climate scientists and nautical navigators. It is defined as the area of sea ice relative to the total at a given point in the ocean. This article will deal primarily with its determination from remote sensing measurements.
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Sea ice is very slowly melting the Chukchi Sea, but only slowly. Ice extent as ofJuly 18 well above last year and is the highest for the date since 1994(!) in NSIDC data. Sea ice melt in the Beaufort Sea has also been slow but is starting to pick up speed and is now slightly lower than last year at this time. @Climatologist49 @ZLabe
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Sea ice is very slowly melting the Chukchi Sea, but only slowly. Ice extent as ofJuly 18 well above last year and is the highest for the date since 1994(!) in NSIDC data. Sea ice melt in the Beaufort Sea has also been slow but is starting to pick up speed and is now slightly lower than last year at this time. @Climatologist49 @ZLabe
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Mid-July 2026 update on Arctic sea ice is now out from the Alaska and Arctic Climate Newsletter. Overall ice extent similar to 2025 but big regional diffs. On Beehiv and Substack. #Arctic #SeaIce #Climate
alaska-arctic-climate.beehiiv.com/p/mid-july-2...
alaskaclimate.substack.com/p/mid-july-2... -
Mid-July 2026 update on Arctic sea ice is now out from the Alaska and Arctic Climate Newsletter. Overall ice extent similar to 2025 but big regional diffs. On Beehiv and Substack. #Arctic #SeaIce #Climate
alaska-arctic-climate.beehiiv.com/p/mid-july-2...
alaskaclimate.substack.com/p/mid-july-2... -
Mid-July 2026 update on Arctic sea ice is now out from the Alaska and Arctic Climate Newsletter. Overall ice extent similar to last year but big regional differences persist. Available on Beehiv and Substack. @Climatologist49
https://alaska-arctic-climate.beehiiv.com/p/mid-july-2026-arctic-sea-ice-update
https://alaskaclimate.substack.com/p/mid-july-2026-arctic-sea-ice-update
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Mid-July 2026 update on Arctic sea ice is now out from the Alaska and Arctic Climate Newsletter. Overall ice extent similar to last year but big regional differences persist. Available on Beehiv and Substack. @Climatologist49
https://alaska-arctic-climate.beehiiv.com/p/mid-july-2026-arctic-sea-ice-update
https://alaskaclimate.substack.com/p/mid-july-2026-arctic-sea-ice-update
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Sea ice extent in the Chukchi Sea is the highest for this point in the season since 2000 (although only slightly higher than 2024) in NSIDC data. The Beaufort Sea has virtually no open water, a first for this point in the summer since 2000. @Climatologist49 @ZLabe
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Sea ice extent in the Chukchi Sea is the highest for this point in the season since 2000 (although only slightly higher than 2024) in NSIDC data. The Beaufort Sea has virtually no open water, a first for this point in the summer since 2000. @Climatologist49 @ZLabe
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The Beaufort Sea (north of Alaska, northwest Canada) had no open water (sea ice concentration less than 15 percent) on July 9th in NSIDC analysis. There had been small areas of open water but these closed as ice drifted back. The only other summer since 1979 with no open water this late in the season was 2000 (July 15 and 16). @Climatologist49 @ZLabe
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The Beaufort Sea (north of Alaska, northwest Canada) had no open water (sea ice concentration less than 15 percent) on July 9th in NSIDC analysis. There had been small areas of open water but these closed as ice drifted back. The only other summer since 1979 with no open water this late in the season was 2000 (July 15 and 16). @Climatologist49 @ZLabe
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Our paper on #SeaIce area and its uncertainty is now published !
doi.org/10.5194/tc-20-3783-2026
Uncertainty of the satellite-retrieved sea-ice area record and its trend
Andreas Wernecke, Thomas Lavergne, Stefan Kern, and Dirk Notz
The Cryosphere, 20, 3783–3793, https://doi.org/10.5194/tc-20-3783-2026, 2026 -
Our paper on #SeaIce area and its uncertainty is now published !
doi.org/10.5194/tc-20-3783-2026
Uncertainty of the satellite-retrieved sea-ice area record and its trend
Andreas Wernecke, Thomas Lavergne, Stefan Kern, and Dirk Notz
The Cryosphere, 20, 3783–3793, https://doi.org/10.5194/tc-20-3783-2026, 2026 -
Rare summer occurrence of almost completely cloud-free skies across the entire southern Beaufort Sea from Point Barrow eastward to the Northwest Territories. Beaufort Sea has hardly any open water, with ice extent for the first week of July the highest since 2000. Chukchi Sea ice extent also very high with mostly solid near the Alaska coast north of 70ºN. Image courtesy UAF/GINA. @ZLabe @Climatologist49
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Rare summer occurrence of almost completely cloud-free skies across the entire southern Beaufort Sea from Point Barrow eastward to the Northwest Territories. Beaufort Sea has hardly any open water, with ice extent for the first week of July the highest since 2000. Chukchi Sea ice extent also very high with mostly solid near the Alaska coast north of 70ºN. Image courtesy UAF/GINA. @ZLabe @Climatologist49
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Like the majority of our #SeaIce products, the Sea Ice Index is currently based on data from #JAXA 's #AMSR2 sensor. This sensor is being operationally replaced by its successor, #AMSR3, and we are currently adapting our products accordingly.
For more details: https://osi-saf.eumetsat.int/community/stories/implications-amsr2-being-replaced-amsr3-osi-saf-products.
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Like the majority of our #SeaIce products, the Sea Ice Index is currently based on data from #JAXA 's #AMSR2 sensor. This sensor is being operationally replaced by its successor, #AMSR3, and we are currently adapting our products accordingly.
For more details: https://osi-saf.eumetsat.int/community/stories/implications-amsr2-being-replaced-amsr3-osi-saf-products.
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In June 2026, the #SeaIce global extent was 7.1% below 1991-2020 mean. Since the beginning of records (november 1978):
- #Arctic, 6th lowest monthly mean, with -5.0% less extent than normal (-567,575 km²)
- #Antarctic, 6th lowest monthly mean, with -8.3% less exent than normal (-1,141,933 km²) -
In June 2026, the #SeaIce global extent was 7.1% below 1991-2020 mean. Since the beginning of records (november 1978):
- #Arctic, 6th lowest monthly mean, with -5.0% less extent than normal (-567,575 km²)
- #Antarctic, 6th lowest monthly mean, with -8.3% less exent than normal (-1,141,933 km²) -
Sea ice extent is very high for this point in the season in the Chukchi and Beaufort Seas. The combined Chukchi and Beaufort Seas extent is the highest since 2000. Similar to 2024, the western Chukchi Sea has extensive ice on the north shore of the Chukotsk Peninsula and in there's hardly any open water yet in the Beaufort Sea. @Climatologist49 @ZLabe
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Voyage to the end of the world: floating lab to explore life in Arctic adrift in ice https://www.theguardian.com/environment/2026/jul/02/arctic-tara-ocean-foundation-expedition-floating-lab-explore-life-adrift-ice #Arctic #PolarRegions #WorldNews #Science #ClimateCrisis #Environment #Greenland #Norway #Oceans #Europe #Ice #SeaIce
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For the third year in a row, late June sea ice extent in the Chukchi Sea is well above the 1991-2020 median in NSIDC data. Ice extent is slowly decreasing but high concentration ice remains extensive offshore of the northeast Chukotka Peninsula and off the Alaska coast north of Wainwright. In the Beaufort Sea there is hardly any open water yet. @Climatologist49 @ZLabe
