New preprint available

Kaleschke, L., Tian-Kunze, X., Hendricks, S., and Ricker, R.: SMOS-derived Antarctic thin sea-ice thickness: data description and validation in the Weddell Sea, Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2023-326, in review, 2023.

#Antarctic #SeaIce #RemoteSensing #SMOS #OpenScience #OpenData #OpenAccess

August #SeaIce highlights from #C3S:

❄️ #Antarctic sea ice saw the largest negative anomaly for August on record, at 12% below average;
❄️ #Arctic sea ice was 10% below average but well above the record minimum from August 2012.

More: https://climate.copernicus.eu/sea-ice-cover-august-2023?utm_source=socialmedia&utm_medium=tw&utm_campaign=CBaugust23

#CopernicusClimate #Climate #seaice #Reanalysis #climatecrisis #Antarctic

Sea ice extent in the seas north of Alaska is approaching the seasonal minimum. As of September 9, both the East Siberian Sea and Beaufort Sea #SeaIce extent was the 3rd lowest past 45 years, Chukchi Sea at 6th lowest in NSIDC data. New ice isn't going to form south of 74N in the next week but the remaining ice will be pushed around by the wind and waves action will continue to melt some ice even as solar heating is rapidly waning. #akwx #Arctic
@Climatologist49 @ZLabe

Updated 50-year change in summer average temperature in and around the #Arctic, now for 1974 through 2023, using ERA5 courtesy of ECMWF/Copernicus. Virtually all land areas are warming, with the largest increases over northern Siberia and parts of northern Canada. Large increases over some ocean areas directly related to #SeaIce loss. Higher Arctic ocean areas show little change as heating goes into melting snow/ice through most of the summer. #ClimateChange #ClimateCrisis
@Climatologist49

Polarstern reaches North Pole

#Fensterfreitag #Arctic #SeaIce #Climate

https://www.awi.de/en/about-us/service/press/single-view/polarstern-erreicht-nordpol.html

We are approaching the yearly minimum extent of the #Arctic #Seaice.

It seems that we won't reach a record low this year, but the minimum will still be significantly below the 1981-2010 baseline.

Source: #OSISAF

The research, published in the journal Nature Climate Change, found #Antarctica was warming at a rate of between 0.22C and 0.32C per decade, compared to 0.18C per decade predicted by climate models. #ClimateCrisis #SeaIce

Antarctica warming much faster than models predicted in ‘deeply concerning’ sign for sea levels | Antarctica | The Guardian
https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

Check out little article about some #printmaking artwork I did related to our science project for the Antarctic Science Platform ⬇️🎨🇦🇶

https://www.antarcticscienceplatform.org.nz/updates/ant-art-ica-using-art-to-communicate-antarctic-research

#sciart #scicomm #seaice

No surprise. But still crazy.

#Antarctic #SeaIce extent is low.

This graphic shows the ranking of sea-ice extent by month. Take a look at the last line (representing 2023 and updated including August).

Source: #OSISAF
👉 https://cryo.met.no/en/sea-ice-index-sh

The latest drop of #Antarctic #SeaIce extent seen in my plots is of course not real but an artefact due to missing #JAXA satellite data. I received the following messages:

Malfunction of the product upload system for G-Portal was occurred at 02:05UTC on August 30th, 2023...

We'll continue manual registration for further products, but the situation might remain for a while...

Arctic-wide #SeaIce extent as of September 1 was lower than any point in 2021 or 2022 in NSIDC passive microwave data. The 2023 minimum extent is likely a week or two away. Graphic courtesy NSIDC.

2021 min: 4.77 million km²
2022 min: 4.70 million km²
Sept 1, 2023: 4.67 million km²

#Arctic #ClimateChange

@Climatologist49 @ZLabe @lavergnetho

Sea ice extent in the Beaufort Sea (north of Alaska, northwest Canada) has now dipped to less than 200,000 km² in NSIDC data for only the third year in the satellite era (since 1979). Extent is likely to decrease a little bit more in the coming days as a storm with moderate southeast winds and waves impacts #SeaIce in the western Beaufort Sea late Sunday/Monday. #akwx #Arctic @Climatologist49 @ZLabe

I wrote down some thoughts about the cmocean.ice colormap that many of us use to plot maps of #SeaIce.

https://github.com/matplotlib/cmocean/issues/93

And I invite the #SeaIce community to join the discussion 😅

Illustration: a map of sea-ice concentration with 3 different colormaps (cmocean's ice, matplotlib's Blues_r, and matplotlib's PuBu_r)

@ZLabe @SigneAaboe @AlaskaWx @seaice and all...

#Arctic #SeaIce extent was 9th lowest in August (#OSISAF).

With only 2 weeks left of the melt season, we are not heading towards a record minimum this year.

Still, the 📉 trend is clear: since 1978, #satellites recorded an average loss of 70,000 km2 of ice *per year*.

📢 #Antarctic #SeaIce extent was *record low* in August according to #osisaf

We are missing 2 millions km2 of sea ice compared to the 1981-2010 climatology.

The end of winter is approaching in the #Antarctic: soon the Sun will warm the ocean and melt the ice 😭 .

@ZLabe @SigneAaboe @kevpluck

The ferry I am currently on has just passed the #PenguinsFPSO a floating storage and production operations vessel that, #Shell assures us here, "is an attractive opportunity with a competitive forward looking price".

And all I can think of is the paper I commented on last week about emperor penguin chicks that failed to fledge because the #SeaIce around #Antarctica broke up early.
#FossilFuels #OilAndGas #ClimateChange #EmperorPenguins

https://www.shell.com/about-us/major-projects/penguins.html

Important thread attached.
https://fediscience.org/@PoLaRobs/110975123418693370
@PoLaRobs - A thread about the extreme anomaly in Antarctic sea-ice extent this year, the present state of knowledge on the reasons for it and why further research is important.
I find the sharp downward trend in Antarctic sea-ice extent that started 7 years ago deeply unsettling, which is why I toot about it a lot.
1/n

#Antarctic #Science #ClimateChange #SeaIce

Good thread on the current alarming #Antarctic #SeaIce trends by @PoLaRobs

https://fediscience.org/@PoLaRobs/110975123418693370

Introducing Maxi, a space sciences 🪐 master's student and our newest member! Currently exploring #Sentinel1 data to study oil seeps in the Arctic 🛰️ 🛢️ ❄️ Using #machinelearning in 🐍 to classify oilspills in #seaice conditions. In early stages, focused on data preprocessing. 🌊

Sea ice continues to melt away in the seas north of Alaska. In the northwest Beaufort Sea there's now open water to 76ºN in NWS Alaska Region #SeaIce concentration analysis (right). Chukchi Sea ice extent well below even the 1991-2020 median and is now 90 percent open water in NSIDC data (left). #akwx #Arctic
@Climatologist49 @ZLabe