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Snow White

@greatwhitecon.info
136 followers 73 following 101 posts

Putting the Arctic sea ice record straight

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Snow White @greatwhitecon.info · 09/09/2026
For the third month running low pressure was dominant over the Central Arctic Basin during August: greatwhitecon.info/2026/09/fact... Temperatures at the 925 hPa pressure level were anomalously high across most of the Arctic, particularly over the Kara Sea and Canadian Arctic Archipelago.
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Snow White @greatwhitecon.info · 21/07/2026
New record retreat of the Jakobshavn Glacier in West Greenland: greatwhitecon.info/2026/07/new-... Animation via Espen Olsen at the Arctic Sea Ice Forum Cc: @peterwsinclair.bsky.social @ruthmottram.eurosky.social
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Damian Carrington @dpcarrington.bsky.social · 16/06/2026
'This would have been a wild dream a year ago': meet the scientists trying to refreeze the Arctic - Sea ice is melting fast, worsening the #climatecrisis, but a bold attempt to rethicken it is showing early signs of success #geoengineering Story by me www.theguardian.com/environment/...
theguardian.com
‘At first, the idea does sound crazy’: meet the scientists trying to refreeze the Arctic
Sea ice is melting fast, worsening the climate crisis, but a bold attempt to rethicken it is showing early signs of success
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Snow White @greatwhitecon.info · 16/06/2026
Here's a “false colour” image of the swirl of cloud caused by a cyclone over the central #Arctic this morning. The choice of frequencies in the visualisation makes it easier to distinguish clouds from snow and ice. More at: greatwhitecon.info/2026/06/fact...
A “false colour” image of an Arctic cyclone centred over the Laptev Sea on June 16th 2026, from the VIIRS instrument on the Suomi satellite
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Snow White @greatwhitecon.info · 20/02/2026
Here is our mid February update on Arctic sea ice thickness and volume, based on the Alfred Wegener Institute’s merged CryoSat-2/Sentinel 3/SMOS gridded sea ice thickness data: greatwhitecon.info/2026/02/fact... 1/
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Snow White @greatwhitecon.info · 17/02/2026
"Thousands of federal data sets have vanished without warning, including many key to climate research. One day last May, @noaa.gov announced that the Sea Ice Index, a nearly half-century-long archive kept by one of its centers, would no longer be maintained or updated." 👇 #SeaIce
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We Don't Have Time @wedonthavetime.wsocial.eu · 15/02/2026
“A complete total assault on all our environmental progress.” At the Munich Security Conference, California Governor Gavin Newsom @governor.ca.gov did not hold back when speaking to #WeDontHaveTime about Donald Trump’s latest attack on science. Share this interview if you agree.
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Snow White @greatwhitecon.info · 15/02/2026
ERA5 data for January 2026 has still not made it over to @noaa.gov's "Web-based Reanalyses Intercomparison Tools". Rather belatedly here is our @nsidc.bsky.social #Arctic sea ice news replacement service, reverting to the NCEP/NCAR R1 reanalysis: greatwhitecon.info/2026/02/fact...
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Snow White @greatwhitecon.info · 12/02/2026
Thanks Jake. "Returning the Rule of Law to EPA Regulations. Creating Policy Rooted in Reality! Restoring the American Dream!! Prioritizing Consumer Choice!!!" "Major Supreme Court decisions in the intervening years... have significantly clarified the scope of EPA’s authority under the CAA" 1/
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Peter Gleick @petergleick.bsky.social · 12/02/2026
Who is suing to protect the Endangerment Finding? Cause I've still got 2026 money to donate.
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UK Centre for Polar Observation and Modelling @cpom-uk.bsky.social · 05/02/2026
📣 New research by Rachel Tilling examines how different satellites track Arctic sea ice 'leads' and 'floes'. This is crucial for understanding how sea ice is changing seasonally and over the longer-term. agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Lead and Floe Detection From CryoSat‐2 Radar and ICESat‐2 Laser Altimetry
The CryoSat-2 and ICESat-2 satellite altimeters provide invaluable data for resolving small-scale sea ice features across the Arctic Because CryoSat-2 and ICESat-2 differ in their geometric and r...
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Snow White @greatwhitecon.info · 05/02/2026
Two different varieties of Arctic sea ice thickness, and hence volume, at the end of January 2026. Compare and contrast the PIOMAS "model" versus satellite "measurements": greatwhitecon.info/2026/02/fact...
A map of Arctic sea ice thickness on January 31st 2026, based on the PIOMAS model developed by the Polar Science Center at the University of Washington.A map of Arctic sea ice thickness on January 31st 2026.

It's based on merged CryoSat-2, Sentinel 3 and SMOS satellite data from the Alfred Wegener Institute.A graph of Arctic sea ice volume on January 31st 2026, including data going back to 2010.

It's based on the PIOMAS model developed by the Polar Science Center at the University of Washington.A graph of Arctic sea ice volume on January 31st 2026, including data going back to 2010.

It's based on merged CryoSat-2, Sentinel 3 and SMOS satellite data from the Alfred Wegener Institute.
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Snow White @greatwhitecon.info · 24/01/2026
Here's the latest instalment in the #Climategate3 scandal 👇 www.edf.org/media/newly-... "The records reveal brazenly unlawful actions behind the creation of a report that underlies the administration’s attack on the Endangerment Finding – including evidence of at least 18 meetings held in secret."
edf.org
Newly Disclosed Records Show Trump Administration’s Unlawful Actions Related to Secretly Formed “Climate Working Group”
The records are part of more than 68,000 pages of records obtained by EDF and the Union of Concerned Scientists as as the result of a lawsuit.
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Snow White @greatwhitecon.info · 23/01/2026
Speaking of NCA6, See also: bsky.app/profile/jim-...
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Snow White @greatwhitecon.info · 23/01/2026
A very interesting addendum to my article on the evisceration of NCAR and the (potential!) MAGA flavoured Sixth US National Climate Assessment 👇 greatwhitecon.info/2026/01/the-...
greatwhitecon.info
The Sixth US National Climate Assessment | The Great White Con
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David Ho @davidho.bsky.social · 20/01/2026
This is the most astonishing graph of what the Trump regime has done to US science. They have destroyed the federal science workforce across the board. The negative impacts on Americans will be felt for generations, and the US might never be the same again. www.nature.com/immersive/d4...
This line graph illustrates the percentage change in agency staff levels from the previous year for nine major U.S. federal scientific and health organizations between the fiscal years 2016 and 2025. The agencies tracked include the CDC, Department of Energy, EPA, FDA, NASA, NIH, NIST, NOAA, and NSF. For the majority of the timeline between 2016 and 2023, the agencies show relatively stable fluctuations, generally staying within a range of +5% to -5% change per year. However, there is a dramatic and uniform plummet starting in the 2024–25 period. Every agency depicted shows a sharp downward trajectory, with staffing losses ranging from approximately -15% to over -25%. The Environmental Protection Agency (EPA) shows the most significant decline, dropping to roughly -26%, while the National Institute of Standards and Technology (NIST) shows the least severe but still substantial drop at approximately -15%.
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Helen Czerski @helenczerski.bsky.social · 20/01/2026
A pretty unambiguous top line judgement in the UK's "National security assessment on global ecosystems" report, released today: "Global ecosystem degradation and collapse threaten UK national security and prosperity" Confidence: high. Time to speed up action, then? www.gov.uk/government/p...
gov.uk
Nature security assessment on global biodiversity loss, ecosystem collapse and national security
This strategic assessment explores how global biodiversity loss and the collapse of critical ecosystems could affect the UK’s resilience, security and prosperity.
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Ruth Mottram @ruthmottram.eurosky.social · 19/01/2026
Fairly exciting weather today, hurricane force winds + blizzard. The neighbours* have been on the radio offering an Antarctic film festival this evening if we can get out the door.. * Finland. The Finnish station Aboa is about a hundred metres away on the same nunatak as Wasa #iQ2300 #Antarctica
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Snow White @greatwhitecon.info · 18/01/2026
"Ooh, let the drums mark this day" youtu.be/hS0wFiWpU4U #Greenland
youtu.be
Greenland Defense Front - The Hungry Giant (Official Music Video)
YouTube video by demonflyingfox
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Snow White @greatwhitecon.info · 18/01/2026
"Ooh, let the drums mark this day" youtu.be/hS0wFiWpU4U #Greenland
youtu.be
Greenland Defense Front - The Hungry Giant (Official Music Video)
YouTube video by demonflyingfox
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Claes de Vreese @claesdevreese.bsky.social · 17/01/2026
Copenhagen town hall square, Denmark right now. Massive solidarity with Greenland demonstrations. Source: dr.dk
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The Barents Observer @thebarentsobserver.com · 16/01/2026
Maritime identity fraud in the Arctic: An oil tanker with false IMO number is on the way along the Norwegian coast en route to Murmansk www.thebarentsobserver.com/news/tanker-...
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Katharine Hayhoe @katharinehayhoe.com · 16/01/2026
Yes - see: www.eenews.net/articles/its...
eenews.net
It’s the gold standard of US climate research. Contrarians could write the next one.
Researchers who have downplayed the threat of global warming have been asked to author the next National Climate Assessment.
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Jim Hunt @jim-hunt.bsky.social · 16/01/2026
My article on the (potential!) 6th edition of the US National Climate Assessment 👇 greatwhitecon.info/2026/01/the-... "It is already clear that @katharinehayhoe.com, @hausfath.bsky.social and the other scientists who produced #NCA5 will not be invited by the Trump administration to write #NCA6"
A photograph of the NCAR Mesa laboratory in Boulder, Colorado taken in 2014.

Image: Tim Farley, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
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Jim Hunt @jim-hunt.bsky.social · 15/01/2026
My Arctic alter ego has been experimenting with deepfake images of fantasy emperors: bsky.app/profile/grea... Would you like to see the "undressed" version @alastaircampbell2.bsky.social?
bsky.app
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Lars Kaleschke @seaice.de · 13/01/2026
New preprint: Ludwig, V.,et al.: Biases, Uncertainties, and Trends in Arctic Sea-Ice Thickness: A Cross-Product Analysis from 1995 to 2023, EGUsphere [preprint], doi.org/10.5194/egus..., 2026.
doi.org
Biases, Uncertainties, and Trends in Arctic Sea-Ice Thickness: A Cross-Product Analysis from 1995 to 2023
Abstract. Sea-ice thickness is a key component of the Arctic climate system, but yet a comprehensive assessment across observations and numerical models is still missing. Previous studies have either ...
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Snow White @greatwhitecon.info · 13/01/2026
The Democrats have made their next move in the ongoing 19 dimensional chess game over #Greenland greatwhitecon.info/2025/12/the-... In response to Rep. Fine’s opening gambit, Congressman @gomez.house.gov (CA-34) announced today that he had "Introduced the Greenland Sovereignty Protection Act" 1/n
greatwhitecon.info
The US National Security Strategy 2025 | The Great White Con
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Snow White @greatwhitecon.info · 13/01/2026
Here's the latest move in the Trump administration's game of 19 dimensional chess, with #Greenland the prize to be awarded to the winner: greatwhitecon.info/2025/12/the-... "Congressman Randy Fine (FL-06) introduced the Greenland Annexation and Statehood Act..." 1/n
greatwhitecon.info
The US National Security Strategy 2025 | The Great White Con
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Scott Waldman @scottpwaldman.bsky.social · 12/01/2026
NEW: I obtained internal emails from the Department of Energy's climate working group. They show the group plotting to produce a second misleading climate report, DOE officials avoiding public disclosure laws, DOE peer reviewers stating they weren't qualified: www.eenews.net/articles/doe...
eenews.net
DOE sees bigger role for climate contrarians, records show
A small team of researchers who dispute mainstream climate science may play an outsize role in the next National Climate Assessment.
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Snow White @greatwhitecon.info · 12/01/2026
Due to Trump administration funding cuts @nsidc.bsky.social is no longer providing this sort of information on a monthly basis. Hence here are the ERA5 MSLP and 925 hPa air temperature anomaly maps of the #Arctic for December 2025: greatwhitecon.info/2026/-01/fac...
ERA5 mean sea level pressure map of the Arctic for December 2025.ERA5 temperature anomaly map of the Arctic at the 925 hPa pressure level for December 2025.
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Snow White @greatwhitecon.info · 11/01/2026
Since AI imagery is in the news at the moment, here's one I prepared earlier, with the assistance of ImageFX rather than #Grok
An AI generated image of Donald Trump cosplaying a Viking warrior in a Greenland fjord.
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Snow White @greatwhitecon.info · 11/01/2026
Here's my review of the recently published "US National Security Strategy" greatwhitecon.info/2025/12/the-... "The Trump Administration’s document makes no mention of the #Arctic or #Alaska or even #Greenland... There is no mention of any risk of conflict between #Russia and the United States"
greatwhitecon.info
The US National Security Strategy 2025 | The Great White Con
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Snow White @greatwhitecon.info · 05/01/2026
Whichever way you look at it, PIOMAS modelled #Arctic sea ice volume is currently the lowest it has ever been for the time of year since satellite coverage began in 1979. Here's plots of the daily, monthly and annual data 👇 greatwhitecon.info/2026/01/fact...
Daily plot of PIOMAS Arctic sea ice volume from 2010 to December 31st 2025Plot of December average PIOMAS Arctic sea ice volume from 1979 to 2025Plot of annual average PIOMAS Arctic sea ice volume from 1979 to 2025
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Andy Lee Robinson @ahaveland.bsky.social · 22/12/2025
Arctic Sea Ice Minimum Volumes 1979-2025 youtu.be/8lYQnxGharo?... #Arctic sea ice volume for Sept 2025 in 2nd lowest place ever with 3,874 km³. That's a *quarter* of what it was just 40 years ago at 16,855 km³. (Now in 4k 60fps!) #ClimateChange #ClimateCrisis #dataviz
youtu.be
Arctic Sea Ice Minimum Volumes 1979-2025
YouTube video by Andy Lee Robinson
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Snow White @greatwhitecon.info · 09/12/2025
The Trump White House’s [lack of] National Security Strategy in the Arctic: greatwhitecon.info/2025/12/the-... "It makes no mention of the #Arctic or Alaska or even Greenland... Or of any risk of conflict between Russia and the United States, in the Arctic or anywhere else on Planet Earth."
The Nagurskoye military base on Aleksandra Island in Franz Josef Land.

Image via @thebarentsobserver.com
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Peter Sinclair @peterwsinclair.bsky.social · 08/12/2025
UK Briefing on Climate and National Security thinc.blog/2025/12/08/u...
thinc.blog
UK National Briefing: Climate Crisis, Defense, and Security
On 27th November, ten of the UK’s leading experts briefed an invite-only audience of around 1,250 politicians and leaders from business, culture, faith, sport and the media with the latest implicat…
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Snow White @greatwhitecon.info · 08/12/2025
Here's an extract from Lieutenant General (Ret’d) Richard Nugee's presentation at the recent UK #NationalEmergencyBriefing: greatwhitecon.info/2025/12/the-... "The Russian Duma has claimed [the Arctic Ocean] is a Russian internal sea, whereas we treat the #Arctic as international waters." 1/n
Map of ports and military bases near and within the Arctic Circle
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Snow White @greatwhitecon.info · 08/12/2025
At the end of November JAXA #Arctic sea ice extent and PIOMAS volume were both lowest for the time of year since satellite measurements began: greatwhitecon.info/2025/12/fact... Extent was 9.27 million km², and volume 9.20 thousand km³.
A graph of JAXA/ViSHOP Arctic sea ice extent on December 4th 2025A graph of PIOMAS "modelled" Arctic sea ice volume on November 30th 2025
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Snow White @greatwhitecon.info · 07/11/2025
Here's a map of #Arctic sea ice thickness at the end of October: greatwhitecon.info/2025/11/fact... It's based on data from the CryoSat-2, Sentinel 3 and SMOS satellites.
A map of Arctic sea ice thickness on October 31st 2025.

It's based on merged CryoSat-2, Sentinel 3 and SMOS data from the Alfred Wegener Institute.
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Snow White @greatwhitecon.info · 05/11/2025
FYI @thedisproof.bsky.social 👇 bsky.app/profile/grea...
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Snow White @greatwhitecon.info · 04/11/2025
Prompted by a regular reader, I've been experimenting with trying to persuade an LLM to accurately answer some scientific questions about #Arctic sea ice: greatwhitecon.info/2025/11/grok... Preliminary results obtained using xAI via Grok provide compelling empirical proof of Brandolini's Law:
A brief extract from a long conversation with Grok about Arctic sea ice.

I point out to Grok that a supposed reference to Arctic data in the US Department of Energy's "Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate" actually refers to Antarctic data.

In response xAI  asserts that:

"The DOE report explicitly references NSIDC Arctic sea ice data for its ~5% decline estimate since 1980, reflecting annual mean extent trends with noted post-2007 pauses, not Antarctic figures. The graph you shared shows Antarctic October anomalies with a near-flat slope, unrelated to the cited Arctic plot. Conflating hemispheres overlooks distinct regional dynamics—Arctic losses dominate seasonal minima, yet overall variability tempers linear projections—emphasizing empirical scrutiny over dismissal."
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Remote Sensing of Polar Regions, University of Bremen @polarbremen.bsky.social · 27/10/2025
Great to get the latest news about the AMSR3 instrument on the recently launched GOSAT-GW #satellite 🛰️, during the JAXA PI meeting last week in #Tokyo. First data was shown and is looking great! 🥳 We are looking forward to make use of the new 183 GHz channels.
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Lars Kaleschke @seaice.de · 17/10/2025
Operational processing and dissemination of the Level 3 SMOS Sea Ice Thickness product have resumed for the winter season 2025/26. Unfortunately, RFI-induced data gaps continue to affect the #Barents–Kara sector of the #Arctic #Ocean. 🛰️🌊🌍 doi.org/10.57780/sm1...
SMOS sea ice thickness map for the Arctic on 15/10/2025 with some data gaps in the Barents–Kara or European Arctic sector of the Arctic Ocean.
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British Antarctic Survey 🐧 @bas.ac.uk · 16/10/2025
Let the science begin! Spring has sprung in Antarctica, our aircraft have landed, and #RRSSirDavidAttenborough leaves the UK tomorrow. This season our teams will deliver more than 60 science projects at research stations, on the ship, and in remote deep field and marine locations. 🧵 1/4
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Marius Årthun @mariusarthun.bsky.social · 14/07/2025
The Arctic Ocean acts to stabilize the AMOC New paper in #ScienceAdvances by researchers from @bjerknes.uib.no and @oxuniearthsci.bsky.social showing how ongoing Atlantification and sea ice loss leads to a strengthening of the Arctic overturning circulation. www.science.org/doi/10.1126/...
science.org
Atlantification drives recent strengthening of the Arctic overturning circulation
A less ice-covered Arctic shifts dense water formation northward, strengthening the Arctic Ocean overturning circulation.
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Polar Journal @polarjournal.bsky.social · 25/06/2025
Our partner @fondationtaraocean.bsky.social has sent its unique and amazing Tara Polar Station to Svalbard, not only to start its ice trials but also to start its important scientific work. One of the projects is introduced here exclusively. #science #Arctic polarjournal.net/the-tara-pol...
polarjournal.net
The Tara Polar Station, on the front line of Arctic atlantification | Polar Journal
Oceanographer Benjamin Rabe plans to study the phenomenon of upwelling of warm water and nutrients already observed at the edges of the Arctic Ocean to see if it will extend towards the North Pole ove...
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Snow White @greatwhitecon.info · 22/06/2025
A largely cloud free satellite image of the central Northwest Passage shows that the prior melt ponds along the southern route have drained, and that melt ponds have now formed on the northern route through McClure Strait: greatwhitecon.info/2025/05/the-... #Arctic #SeaIce #NWP
A “false colour” image of the Canadian Arctic Archipelago on June 21st 2025 from the MODIS instrument on the Terra satellite
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Skeptical Science @skepticalscience.bsky.social · 20/06/2025
June 21 is #showyourstripes day and we encourage everybody to join and start conversations about climate risks and solutions with the help of the icon graphic created by @edhawkins.org in 2018, inspired by a blanket crocheted by @elliehighwood.bsky.social skepticalscience.com/show-your-st...
Warming stripes - global 1850 - 2024
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Snow White @greatwhitecon.info · 20/06/2025
JAXA/ViSHOP #Arctic #SeaIce extent is now "lowest for the date" in their record going back to 1979: greatwhitecon.info/2025/06/fact...
A graph of JAXA Arctic sea ice extent showing selected years from the 2010s and 2020s, dated June 19th 2025
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Snow White @greatwhitecon.info · 16/06/2025
Sorry for the short notice, but I've only just discovered the existence of this interesting event: 👇
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