Most of the sea ice in the #Arctic Ocean was around 0.5-2 meters thinner than the 1981-2010 average in March 2025. The largest anomalies were north of Greenland and the Lincoln Sea.

Data from PIOMAS. Graphics at https://zacklabe.com/arctic-sea-ice-volumethickness/

https://www.europesays.com/2005912/ As Trade Changes, So Does US Defense #america #Arctic #China #geopolitics #military #Politics #UnitedStates #UnitedStatesOfAmerica #UnitedStatesPolitics #US #USPolitics #USA #UsaPolitics

In Näätämö, Mustonen says, the steps taken by the Sámi to protect their natural prosperity stand out.

“Instead of empty talk, they have actually created visible and positive change on the ground.”

#rewilding #finland #arctic #rivers #salmon #europe

https://www.rewildingmag.com/the-skolt-sami-are-rewilding-the-naatamo-river-to-protect-their-way-of-life/

The Routledge Handbook of Arctic Governance ed. by Elena Conde & Corine Wood-Donnelly, 2025

A comprehensive exploration of the multifaceted issues surrounding governance in the Arctic region. Delving into the complex intersections of justice, sustainability, and security in Arctic politics.

@bookstodon
#books
#nonfiction
#Arctic
#governance

Visualizing changes in April temperatures across the #Arctic region during the last four decades...

Data provided by https://doi.org/10.24381/cds.f17050d7

I've added a new visualization of #Antarctic sea ice thickness averaged by year, which parallels my version for the #Arctic by design. However, unlike the Arctic, there aren't any obvious long-term trends (annual mean).

Graphic will be updated yearly at https://zacklabe.com/arctic-sea-ice-figures/. GIOMAS data.

Monday ice update - #Arctic sea ice extent is currently the 7th lowest on record (JAXA data)...

• about 250,000 km² below the 2010s mean
• about 540,000 km² below the 2000s mean
• about 1,000,000 km² below the 1990s mean
• about 1,560,000 km² below the 1980s mean

More plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

A new study has shed light on the highly variable and climate-sensitive routes that substances from Siberian rivers use to travel across the Arctic Ocean. The findings raise fresh concerns about the increasing spread of pollutants and the potential consequences for fragile polar ecosystems as climate change accelerates

https://phys.org/news/2025-04-arctic-pathways-poised-major-shifts.html

New technologies are helping to regrow Arctic sea ice

But should we use them?

https://grist.org/climate/new-technologies-are-helping-to-regrow-arctic-sea-ice/

Canada is making a significant push to boost its military strength in the Arctic, which accounts for 40% of its territory. https://www.japantimes.co.jp/news/2025/04/14/world/canadian-troops-arctic-defense/?utm_medium=Social&utm_source=mastodon #worldnews #canada #us #russia #defense #china #arctic

I just updated my monthly mean #Arctic sea ice thickness graph with data through all of 2024 from CryoSat-2 (satellite).

Note the data length is too short to assess long-term trends, but reveals important variability. Visualization: https://zacklabe.com/arctic-sea-ice-volumethickness/

Sea ice extent in the Bering showing little change overall. Well below normal temperatures and prevailing north winds over the central and eastern Bering Sea for the past week have maintained the ice. @Climatologist49 @ZLabe

Each line represents one year of #Arctic sea ice thickness from 1979 [dark blue] to 2024 [dark red]. This year is shown in yellow - now updated through March 2025 which is around the 2nd thinnest on record for the month.

+ More visuals of thickness and volume: https://zacklabe.com/arctic-sea-ice-volumethickness/

My #Arctic sea-ice thickness and volume data visualizations were just updated through March 2025: https://zacklabe.com/arctic-sea-ice-volumethickness/ #SciComm #DataViz #OpenScience #OpenData

Sea surface temperatures around Alaska for the week ending April 11 are above the 1991-2020 average in almost all areas without sea ice. The Gulf of Alaska and Bristol Bay warmth is especially dramatic. Data courtesy NOAA/PSL/ESRL. #akwx #Arctic #SST @Climatologist49

Most regions of the Arctic are close to a new climate state (for temperature and sea ice), with wide-ranging and possibly irreversible consequences for vulnerable Arctic ecosystems and human activities

https://www.nature.com/articles/s41598-025-96607-1

https://www.europesays.com/1988445/ ‘Hard on the body’: Canadian troops battle brutal conditions to train for Arctic defence #Arctic #Canadá #CanadianAirForce #ClimateChange #ColonelDarrenTurner #CorporalCassidyLambert #DonaldTrump #Iqaluit #MarkCarney #military #NaturalResources #NewfoundlandAndLabrador #OperationNanook #People'sRepublicOfChina #RussianFederation #troops

Friday ice update - #Arctic sea ice extent is currently the 5th lowest on record (JAXA data)

• about 310,000 km² below the 2010s mean
• about 660,000 km² below the 2000s mean
• about 1,130,000 km² below the 1990s mean
• about 1,640,000 km² below the 1980s mean

Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

#Arctic #Permafrost #Science #ClimateChange

From BBC.com: Treading gently: The scientists who leave little trace at the world's northernmost lab

https://www.bbc.com/future/article/20250408-the-scientists-leaving-no-trace-in-the-arctic

Just added #Arctic climate rankings for March 2025: https://zacklabe.com/archive-2025/, a month with particularly low wintertime sea ice conditions