Bluesky · Hashtag

#SeaIce

35
posts · 30d
15
users
1
posts / day
2.3
posts / user
+ 33% vs last week

#SeaIce is an active hashtag on Bluesky. In the last 30 days, 15 people shared 35 posts with it — around 1 a day. Activity is up 33% versus the previous week, peaking on Jul 13 with 4 posts.

#SeaIce posts per day (last 30 days)

Posts with #SeaIce

Rick Thoman
@alaskawx.bsky.social
over 1 year ago
Devastating data disruptions for #Alaska & the #Arctic. With no advance notice: "Effective May 5, 2025, NOAA’s National Centers for Environmental Information (NCEI) will decommission its snow and ice data products from the Coasts, Oceans, and Geophysics Science Division (COGS)." #NOAA #SeaIce #Snow
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Rick Thoman
@alaskawx.bsky.social
4 months ago
More bad news for climate monitoring. Much like the fiasco with satellite derived sea ice info last summer, the very short notice of termination of a product that’s been available for decades has real world consequences. #Arctic #SeaIce

I had a feeling this was going to happen. Sad news, especially given the poor state of sea ice after this winter. Looks like we won't be getting any more data for Arctic sea-ice thickness and volume for a while from PIOMAS. See: psc.apl.uw.edu/research/pro...

Screenshot of text that says: "Important Notice (3/24/2026): 
NOAA NWS/NCEP has terminated the NCEP/NCAR R1 reanalysis as of March 18th, 2026. NCEP/NCAR R1 has been used as the atmospheric forcing data in the PIOMAS reanalysis . We had not been aware of this change in service which was apparently formally announced Feb 13. 2026. This means that we will have to find alternatives and generate a replacement. It will take considerable effort and time to update data streams, re-calibrate the model and generate updated time series. We don’t yet have a good sense if that’s possible with available funds and if so, when we will be able to resume production of a new PIOMAS time series. While a replacement of the NCAR/NCEP R1 as the forcing product makes ultimate sense, we would have wished for a longer time period to facilitate the transition. We are sorry what this means to our many users.  PIOMAS has been in production since March 2010 and we rarely missed updates by more than a couple of weeks (except for  government shutdowns). This will be longer. Check back here for updates! "
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Rick Thoman
@alaskawx.bsky.social
11 months ago
The 2025 Arctic minimum sea ice extent has probably been reached. The min extent was typical for the past decade but occurred earlier that most recent years. Details in the latest post from the Alaska and Arctic Climate newsletter. #Arctic #SeaIce #Climate alaskaclimate.substack.co….
Splash screen for the Alaska and Arctic Newsletter post: "Arctic 2025 Sea Ice Minimum typical minimum extent but unusually early"
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Rick Thoman
@alaskawx.bsky.social
11 months ago
Sea ice extent in the Chukcki Sea, northwest of Alaska, continues to very slowly decrease in NSIDC data. Forecast winds during the upcoming week are not conducive to very much more decline, so the 2025 minimum extent will not be in the ten lowest of past 47 years. #akwx #Arctic #SeaIce
Plot of the minimum daily sea ice extent and the date of occurrence each year 1979 to 2024 plus the 2025 daily ice extent since August 11, with the years color-coded by decade.
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Rick Thoman
@alaskawx.bsky.social
6 days ago
Sea ice extent as of August 1 in the Chukchi and Beaufort Seas 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 drifted in the current into the western Bering Strait. #akwx #Arctic #SeaIce
Left: Daily sea ice extent for the combined Chukchi and Beaufort Seas each year 1979 to 2026 with the past two years and the smoothed 1991-2020 median. Right: NWS Alaska Sea Ice Program sea ice concentration analysis to August 1, 2026.
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Rick Thoman
@alaskawx.bsky.social
9 months ago
In case you're wondering, it's November 9 and there's no sea ice to be seen from Utqiaġvik, northernmost community in Alaska. Sunday at 1125am AKST, 18F (-7.8C) with northeast winds 18kt (21mph). Webcam image courtesy UAF and NSRC. #akwx #Arctic #SeaIce
Webcam image from downtown Utqiaġvik at 1130am AKST Sunday November 9, 2025 looking north to the Chukchi Sea with leaden gray clouds in the sky above.
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Rick Thoman
@alaskawx.bsky.social
over 1 year ago
Bering Sea #SeaIce extent has fallen 30 percent since the start of February and is now the 2nd lowest for this point in the season in the past 47 years of NSIDC data. The only lower season, 2017-18, showed that this will impact the Bering Sea ecosystem and people's lives/livelihoods. #Arctic #akwx
Left: Daily sea ice extent in the Bering Sea each season 1978-79 to 2024-25 with the past two seasons, 2017-18 (the lowest on record) and the smoothed 1991-2020 median highlighted. Right: NWS Alaska region sea ice concentration analysis to February 15, 2025.
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