Signe Aaboe

@signeaaboe

Climate and sea-ice scientist at MET Norway. Research interests include sea ice, oceans, and polar climate. Living in the far north and love gardening, hiking, paddling, and drinking coffee. Any opinions expressed are my own.

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Signe Aaboe@signeaaboe· 2d

2nd-lowest for the 1978-2026 period as well. Interesting drop in extent the last week...

screendump of OSI SAF Antarctic sea ice extent daily time series showing all years since 1978 to present. Currently, sea-ice extent made a large drop in recent days, becoming second-lowest for this time of year.

Signe Aaboe@signeaaboe· 7d

Homemade pesto with home-grown basil and garlic, on Finnish rye bread, topped with home-grown tomatoes. Oh wow, that’s so good 😋

Signe Aaboe@signeaaboe· Jul 2

Look at the Barents Sea! Relative to the 1981-2010 climate reference period, there is unusually little sea ice for this time of year. In fact, the Barents Sea ice extent has reached record-low levels in six of the past 12 months (Aug-Dec and June), indicating later freeze-up and earlier melt.

Map showing Arctic sea-ice concentration in June 2026 compared with the median June sea-ice edge (1981–2010, orange). The largest departure from the historical average is in the Barents Sea, where the ice edge has retreated far north, indicating unusually low sea-ice extent for this time of year.

Heatmap of monthly Barents Sea ice-extent rankings from 1979 to 2026. Blue indicates months with relatively high ice extent, while red indicates low ice extent. The recent decade is dominated by low rankings, with record-low ice extent occurring in six of the past 12 months (August–December 2025 and June 2026).

Signe Aaboe@signeaaboe· Jun 25

Got a new puppy and some in the family is a bit sceptical 😅 😼💛🐶

Signe Aaboe@signeaaboe· Jun 21

#ShowYourStripes 2026 Changes in Northern Hemisphere Sea Ice Extent, 1979 - 2025 Source: OSI SAF Sea Ice Index v3

Changes in Northern Hemisphere sea ice extent are shown as coloured bars, each representing annual anomalies from 1979 to 2025. Blue colours indicate years with above-average sea ice extent and red colours indicate years with below-average sea ice extent relative to the 1981-2010 climatology average. We see a general transition from blue to red through time throughout the record.

Signe Aaboe@signeaaboe· Jun 21

#ShowYourStripes 2026 Global Sea Ice Extent, 1979 - 2025 From blue to darker red, reflecting the long-term decline in sea ice. Source: OSI SAF Sea Ice Index v3

Climate stripes showing coloured lines, each representing annual anomalies of global sea ice extent from 1979 to 2025. Blue colours indicate years with above-average sea ice extent and red colours indicate years with below-average sea ice extent relative to the full-record average. We see a general transition from blue to red through time, especially in recent decades.

Signe Aaboe@signeaaboe· Jun 21

#ShowYourStripes I've updated my Svalbard collage of beautiful Hjortfjellet in Longyearbyen with the warming stripes from Svalbard - showyourstripes.info Svalbard is among the fastest-warming places on Earth!

Signe Aaboe@signeaaboe· May 13

This Saturday, the Sun rises into an unbroken day 💛 ILoveTromso

Screenshot from yr.no showing the weather forecast for Saturday 16 May and the information on the time of sunrise and sunset. Due to start of midnight sun there is no sunset

Signe Aaboe@signeaaboe· Apr 20

Da ble det offisielt snøfritt i Tromsø 💧 @met.no #iTromsø (www.itromso.no/nyheter/n/pB...)

Signe Aaboe@signeaaboe· Apr 16

Here’s a moment of peace and love ❤️ A protecting mother and her son 💕

Signe Aaboe@signeaaboe· Apr 14

What a beauty 😍 - A cloud-free Scandinavia! My home 💙 Credit: European Union, Copernicus Sentinel-3 imagery

This cloud-free satellite image, acquired on 11 April 2026 by one of the Copernicus Sentinel-3 satellites, shows widespread snow cover across Norway’s mountainous spine, northern Sweden, and Finland. The Norwegian fjords appear as dark, narrow inlets cutting through bright snow-covered terrain, while the Gulf of Bothnia and the broader Baltic Sea display deep blue waters, with residual ice visible along the northern shores. Southern Sweden and Finland show more exposed land, with muted brown and green tones indicating early snowmelt.

Signe Aaboe@signeaaboe· Apr 12

Spring came early this year in Northern Norway. Suddenly it is gardening instead of skiing. Weeks eaelier than normal ⛷️—> 🌱

Signe Aaboe@signeaaboe· Apr 10

The increasing sea surface temperature is one of the scariest observations we have, I think ... 😰

Signe Aaboe@signeaaboe· Mar 17

Arctic sea-ice extent just entered record-low values, following the behaviour of last year's record-low winter ice coverage 📉 🌊🧪⚒️

Line graph showing the daily sea-ice extent for the Arctic. 2026 is shown in the black-white line up until 2026-03-15, while the previous years are presented in individual colours. The winter extent in 2026 is record low for this time of year.
Data source is the OSI SAF sea-ice index v3.

Signe Aaboe@signeaaboe· Feb 5

Nice! This is similar results based on coarse-resolution passive microwave data and show the same rapid growth: Source is @osi-saf.eumetsat.int sea-ice index v3

Signe Aaboe@signeaaboe· Jan 24

The return of the sun and the first rays of sunshine ☀️💛 Like a miracle. Every. Single. Year.

Signe Aaboe@signeaaboe· Jan 15

polarhistorie.no - hvilken nydelig webside🤩 Her med dere siste FB innlegg om Grønland:

Screendump av innlegg på Facebook fra polarhistorie.no som omhandler Grønland.

Signe Aaboe@signeaaboe· Jan 8

Despite warm temperatures at Svalbard the sea ice extent has increased in recent days due to ice transport from the north 📈

Graph showing sea ice extent for the Svalbard region. Computed from navigational ice charts. Source: cryo.met.no

Signe Aaboe@signeaaboe· Jan 8

Think about this: Norway is a country that stretches far from south to north, with Svalbard in the far north. Yet Svalbard is today the warmest place in Norway and the only place with observed temperatures above zero 😮

Map of Svalbard and adjecent sea. Background color is modelled air temperature. Numbers are observed temperatures in the morning 8/1/2026- red for pluss degees and blue for minus degrees.

Signe Aaboe@signeaaboe· Jan 5

How has the Arctic sea-ice extent changed since 1979? * large intraannual variabilities * large interannual variabilities * however, a clear long-term negative trend is evident for any day of the year.

Signe Aaboe@signeaaboe· Jan 4

«Hybridkrig» - en bok av @trinehamran.bsky.social som jeg fikk lest nå i Romjula - gir et bra og kritisk overblikk over russisk innflytelse på Norge. Mange tankevekkende eksempler fra blant annet Nordnorge og Svalbard. Aktuell og anbefales 👍

Bilde av bokomslaget til boken Hybridkrig av Trine Hamran

Signe Aaboe@signeaaboe· Jan 4

Beautiful full moon yesterday 🌕 So big and bright and majestic 🤍 The picture doesn't do justice to how it felt walking in the polar night with almost full silver daylight 😍

Photo of the first full moon of 2026 in a winter landscape.

Signe Aaboe@signeaaboe· Jan 1

Arctic sea-ice extent in 2025 was record low in January 🥇 February 🥇 March 🥇 and December 🥇 and the second lowest in June 🥈 November 🥈 and YEARLY 🥈 No blue cells in any month since 2013 ...

Table graphic of the monthly and yearly global sea-ice extent from January 1979 through December 2025. Colours and cell numbers indicate rank by month: blue shades (and higher numbers) indicate larger ice extent, and red shades (and lower numbers) indicate smaller extent.
Source: OSI SAF sea-ice index v3.0

Signe Aaboe@signeaaboe· Jan 1

The December 2025 record-low sea-ice extent in the Arctic is caused mainly by missing ice in the Atlantic sector - Baffin Bay, Svalbard region and Barents Sea, which all had record-low sea-ice cover in December.

Arctic map showing the average sea-ice concentration in December 2025. For comparison, the climatological December sea-ice extent for 1981-2010 is shown as an orange contour. The ice cover is significantly withdrawn toward the north in Baffin Bay and the Barents Sea.
Source: OSISAF sea-ice concentration

Signe Aaboe@signeaaboe· Jan 1

In December 2025, Arctic sea-ice extent reached a record low - a substantial decline from the previous record low in 2024.

Line graph of the northern hemisphere Decembber sea-ice extent timeseries from 1978 to 2025. The timeseries is shown in blue, and a long-term trend line is in black.
Source data: OSI SAF sea-ice index v3

Signe Aaboe@signeaaboe· Dec 11

Arctic sea-ice extent has remained at a record low for more than two weeks, well below previous years.

Line graph showing the daily sea-ice extent for the Arctic. 2025 is shown in the black-white line up until 2025-12-10, while the previous years are presented in individual colours. The extent in 2025 is record low for this time of year.
Data source is the OSI SAF sea-ice index v3.

Signe Aaboe@signeaaboe· Dec 1

Line graph of the northern hemisphere November sea-ice extent timeseries from 1978 to 2025. The timeseries is shown in blue, and a long-term trend line is in black.
Source data: OSI SAF sea-ice index v3

Signe Aaboe@signeaaboe· Dec 1

Arctic sea ice in November 2025 is second-lowest on record. 🥇 lowest in 2016 🥈2nd-lowest in 2025 🥉3rd-lowest in 2020

Arctic map showing the average sea-ice concentration in November 2025. For comparison, the climatological November sea-ice extent for 1981-2010 is shown as an orange contour. The ice cover is significantly withdrawn toward the north in Hudson, Baffin, and Barents.
Source: OSISAF sea-ice concentration

Signe Aaboe@signeaaboe· Dec 1

Line graph of the November sea-ice extent timeseries of the region Hudson Bay, from 1978 to 2025. The timeseries is shown in blue, and a long-term trend line is in black.
Source data: OSI SAF sea-ice index v3

Signe Aaboe@signeaaboe· Dec 1

As expected - this year's November sea-ice extent came out as record-low in both Hudson and Baffin bays 🧪🌊❄️📉