#PolarPortal
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littlemurphydog.bsky.social
fediscience.org/@polarportal...
polarportal (@polarportal@fediscience.org)
Attached: 2 images Enormous melt event ongoing in #Greenland right now One of the biggest we've seen. Much of the interior melt is likely refreezing, but large mass losses at lower elevations Chec...
fediscience.org
July 28, 2025 at 4:23 PM
polarportal.bsky.social
The #PolarPortal seasonal report for 2024/2025 can now be downloaded. As always, in English, Danish and Greenlandic! See polarportal.dk/en/news/tran....
(Photo credit: @ruthmottram.bsky.social, DMI)
Fishing boats returning in the open water in front of the village of Qaanaaq, north-west Greenland, 25 May 2025. This is the earliest date in the record for this event. Credit: Ruth Mottram, DMI
January 14, 2026 at 8:30 AM
reescatophuls.bsky.social
The #Arctic Annual Sea Ice Minimum isn't what it used to be.

There is now a huge area of ice under 1.5m thick, and only tiny patches over 3.5m thick.

@polarportal.bsky.social
Image shows two images of the Arctic Sea Ice Thickness, when the Arctic Sea Ice Volume is at its annual minimum. Image on the left is for September 12th 2005 Taken from: https://polarportal-prod.dmi.dk/api/v1/serve-image/sea?image_name=CICE_combine_thick_SM_EN_20050912.png Image on the right is for September 12th 2025 (E.g. 20 years later). Taken from: https://polarportal-prod.dmi.dk/api/v1/serve-image/sea?image_name=1757683101701_CICE_combine_thick_SM_EN_20250912.png The 2005 image on the left shows substantial areas of ice which are over 3m thick, and plenty of patches which are over 4m thick. The 2025 image on the right shows huge areas which are below 1m thickness, and only tiny patches above 3.5m thickness. See the main webpage, to more details: https://polarportal.dk/en/sea-ice-and-icebergs/sea-ice-thickness-and-volume/
September 12, 2025 at 3:11 PM
ruth-mottram.fediscience.org.ap.brid.gy
Sea ice data on @polarportal is from European @osi_saf group, sea ice thickness + Greenland surface mass balance is from @dmidk.bsky.social's operational models + #grace satellite data is from our partners @dtucryo created as part of the @esaclimate..

❄️🥼⚒️🧪⛏️🌊 […]
Original post on fediscience.org
fediscience.org
May 7, 2025 at 6:19 AM
reescatophuls.bsky.social
The #Arctic sea ice isn't what it used to be.
The area covered is similar, but now much thinner.
Details in Alt Text. @polarportal.bsky.social
Image shows two images of the Arctic Sea Ice Thickness, when the Arctic Sea Ice Volume is at its annual maximum. Image on the left is for May 1st 2005 Taken from: https://polarportal.dk/fileadmin/polarportal/sea/CICE_combine_thick_SM_EN_20050501.png Image on the right is for May 1st 2025 (E.g. 20 years later). Taken from: https://polarportal.dk/fileadmin/polarportal/sea/CICE_combine_thick_SM_EN_20250501.png The 2005 image on the left shows substantial areas of ice which are over 4m thick. The 2025 image on the right shows huge areas which are below 2m thickness, very few areas above 4m thickness. See the main webpage, to more details: https://polarportal.dk/en/sea-ice-and-icebergs/sea-ice-thickness-and-volume/
May 1, 2025 at 7:54 PM
martinstendel.bsky.social
Temperatures up to 20°C above normal in large parts of the Arctic, even above freezing on Svalbard. See more on our @PolarPortal!
Temperatures up to 20°C above normal in large parts of the Arctic, even above freezing on Svalbard.
February 5, 2025 at 11:11 AM
ruthmottram.eurosky.social
In Greenland we have the #polarportal to keep a near real-time view on what's going on with the ice sheet, in #Antarctica we don't really have quite the same thing, but I'm happy to announce that our SMB data +that of colleagues from Belgium is now on #SCAR #AntClimNow :
scar.org/science/rese...
April 26, 2024 at 4:38 PM
ruthmottram.eurosky.social
Makes a lot of sense when you look at the prevailing winds the last few weeks eh on @polarportal.bsky.social

polarportal-prod.dmi.dk/api/v1/serve...
Map of northern hemisphere centred on Greenland showing red for unusually warm.and blue for unusually cold. Arrows show average 10m wind speed and direction for period 8th to 12th July.
July 13, 2025 at 6:27 PM
ruth-mottram.fediscience.org.ap.brid.gy
Incidentally, while this is happening in the US, we have been working quite hard on the @polarportal (well @MartinStendel + out @dmidk colleagues have, I've mainly tried to make helpful comments), the old website is still up giving the latest on #arctic #seaice #Greenland #icesheet and other […]
Original post on fediscience.org
fediscience.org
May 6, 2025 at 8:52 PM
dennis-dekker-1972.eurosky.social
Polarportal is still working.
Big melting event incoming?
June 15, 2026 at 3:18 PM
ruth-mottram.fediscience.org.ap.brid.gy
Meanwhile in the Arctic,it's pretty damn warm (again)
Check out he last year on the @polarportal https://polarportal.dk/en/weather/nbsp/current-weather/
Map of the northern hemisphere coloured red for warmer than average and blue for colder than average. Greenland, NE Canada and Alaska in particular are much warmer than normal
March 13, 2025 at 8:39 AM
ruth-mottram.fediscience.org.ap.brid.gy
This big melt event in western Greenland is certainly preconditioning the break up of the sea ice at my field site in NW Greenland
#ff for @polarportal
https://fediscience.org/@polarportal/112677011334447343
June 25, 2024 at 11:26 AM
wxnb.bsky.social
Hi Martin, do you happen to know where I can get archived daily melt area data? The page I found only has data from 2019 on. Thanks! download.dmi.dk/Research_Pro...
Index of /Research_Projects/polarportal/PP_GSMB
download.dmi.dk
July 21, 2025 at 11:34 AM
ruthmottram.eurosky.social
Somewhat ironically, or perhaps appropriately, the #PHORS2024 meeting is taking place in one of the few blue (colder than average) spots in the northern hemisphere as the #polarportal #weather data shows

polarportal.dk/en/weather/n...
A map of the northern hemisphere coloured blue for colder and red for warmer than average with arrows indicating wind speeds and directions
February 13, 2024 at 12:47 PM
suneauken.mastodon.world.ap.brid.gy
@MartinStendel

Bio:

Climate scientist at #DMI.

Coordinator of PolarPortal (lots of up-to-date Arctic data) and ROPEWALK (huge Danish logbook digitization project together with @rigsarkivet).

#climatechange in the Arctic, in particular #greenland and in Africa, in particular #tanzania […]
Original post on mastodon.world
mastodon.world
March 17, 2025 at 6:29 PM
overshot.bsky.social
Eliot, you can use the date picker, set it to any date within a few years after 2017. Then you will see the 2017 curve. I haven't found a way to get the underlying data values in a tabular form. People have questioned why polarportal 2017 values aren't lower.
May 11, 2026 at 1:56 AM
ruth-mottram.fediscience.org.ap.brid.gy
If I didn't have 2 papers to (re)submit and two reports due at the ECMWF and ESA, I would write a quick blog post on how interesting it is that our modelled melt over the #greenlabd #icesheet on the @polarportal and the satellite derived melt areas almost but don't quite match, and why that […]
Original post on fediscience.org
fediscience.org
June 25, 2025 at 11:11 AM
@Ruth_Mottram @hakaimagazine
I’ll point out I’m a farmer myself, but almost all these problems with rivers, lakes, and even estuaries relate back to widespread intensive farming and its huge volumes of what’s essentially toxic waste.
Ruth Mottram (@Ruth_Mottram@fediscience.org)
18.6K Posts, 3.85K Following, 9K Followers · Climate scientist at DMI, Danish/British dual national, married Dutch, interested in glaciers, ice sheets, atmosphere and climate in Arctic, Greenland, Antarctic Coordinator of @OCEANICE_EU pics on @ruth_mottram@pixelfed.eu + fieldwork pics on @IceClimate@pixelfed.social #climate #science #openresearch #IceSheets #Greenland #Antarctica #cycling #kayaking #biodiversity #Arctic #Glaciology #Weather #Atmosphere #OA #PolarPortal #HorizonEurope #SeaLevelRise #fedi22 tootfinder
fediscience.org
November 30, 2024 at 7:31 PM
subletteweather.com
The melt season on the Greenland Ice Sheet started way early this year. http://www.climatecentral.org/news/greenlands-melt-season-started-nearly-two-months-early-20237 Gfx: @PolarPortal https://t.co/kczAh1QERA
December 4, 2024 at 2:24 PM
billmckibben.bsky.social
"Anywhere in Arctic Ocean not covered by ice right now is at least 4C warmer than usual." Somewhat unsettling news.. https://www.facebook.com/PolarPortal/posts/622126131280344
Polarportal
It is incredibly warm in the Arctic right now, even the o...
www.facebook.com
December 2, 2024 at 1:31 AM
martinstendel.bsky.social
The @PolarPortal seasonal report for 2022/2023 can now be downloaded in English, Danish and Greenlandic: polarportal.dk/en/home/2023...
January 5, 2024 at 2:20 PM
martinstendel.bsky.social
Components of the total mass balance TMB, hydr. years 1987-2023.
SMB: surface mass balance (snowfall - runoff),
MMB: marine mass balance (calving of icebergs),
BMB: basal mass balance (friction).
2022/23 is the 27th year in a row with negative TMB.
See Mankoff et al. (2021), doi.org/10.5194/essd....
Components of the total mass balance TMB, hydrological years 1987-2023. SMB: surface mass balance (snowfall minus runoff), MMB: marine mass balance (calving of icebergs, melting of glacier tongues), BMB: basal mass balance (friction, ground heat flux). 2022/23 is the 27th year in a row with negative TMB. Note that SMB values differ from those published on the @polarportal, since this is an average of three models. Based on Mankoff et al. (2021, updated), https://doi.org/10.5194/essd-13-5001-2021.
October 7, 2023 at 9:47 AM
icesheetmike.myatproto.social
Arctic sea ice is in a very precarious spot right now, both for now and next season. https://m.facebook.com/PolarPortal/posts/622126131280344
September 11, 2016 at 1:27 PM
ruth-mottram.fediscience.org.ap.brid.gy
Always good to come back to work to an interesting weather + ice sheet situation...

#GreenlandIceSheet melt is peaking right now
https://fediscience.org/@polarportal/114930439503910861
polarportal (@polarportal@fediscience.org)
Attached: 2 images Enormous melt event ongoing in #Greenland right now One of the biggest we've seen. Much of the interior melt is likely refreezing, but large mass losses at lower elevations Check out the season here: https://polarportal.dk/en/greenland/surface-conditions
fediscience.org
July 28, 2025 at 10:53 AM
ruth-mottram.fediscience.org.ap.brid.gy
Those of you logging on to check the @polarportal today may have noticed a nice change 😀

There's lots more on the way beyond the freshening up so stay tuned...

https://polarportal.dk/en/
Frontpage
polarportal.dk
June 19, 2025 at 9:31 AM