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Posts by Tanja Schlemm (she/her)

This is an interesting, if provocative perspective. I agree with most of what the authors say except I view the paradigm they advocate as more of a “yes and” rather than a replacement for our current understanding. 1/

2 weeks ago 18 5 1 0

In 1953 Iran had a functioning democracy. A free press. Seven political parties. Women in universities. Women granted voting rights in municipal councils in 1952. A secular prime minister named Mosaddegh who believed Iran's oil belonged to Iran. The US and Britain decided he had to go.

2 weeks ago 6879 2547 22 196
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Global glacier mass change in 2025 Nature Reviews Earth & Environment - Glaciers lost 408 ± 132 Gt of mass during the hydrological year 2025, equivalent to 1.1 ± 0.4 mm sea-level rise. Since 1975, glacier mass loss has...

New article about the global state of glaciers out: rdcu.be/fctdV
For Swedish glaciers, 2025 was a "good bad year": There was much less melt than compared to the record high mass losses in 2024, but the overall balance was still negative @stockholm-uni.bsky.social @bolincentre.bsky.social

1 week ago 13 11 0 1

Huge congratulations to the 2026 @scarinstant.bsky.social Fellows!

These fellowships support researchers working on topics related to Antarctic Ice Sheet stability.

We're looking forward to seeing the outcomes out their work ❄📊.

1 week ago 3 2 0 0

Read our opinion piece on AMOC! Now!

2 weeks ago 24 12 0 0
Image by Nasa/Terra/Modis 26/3/2026

Image by Nasa/Terra/Modis 26/3/2026

The last two big fragments of the once mighty A23 iceberg. The US National Ice Center calls the bottom-left object A23k and the top-right, A23a. Its latest report (20/3/26) said both were about 140 sq km. Latitude is roughly 50 deg S.

3 weeks ago 6 2 0 0
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Arctic sea ice has reached its maximum extent for the year, at 14.29 million square kilometers (5.52 million square miles) on March 15, edging just below last year’s record and statistically tying for the lowest maximum in the 48-year satellite record. @cires.colorado.edu https://bit.ly/4sBUe95

3 weeks ago 23 13 0 2
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Moderate global warming does not rule out extreme global climate outcomes - Nature Extreme global climate outcomes may occur even under moderate 2 °C warming and may turn out to be more extreme than model-averaged projections at 3 °C or 4 °C warming.

A new study suggests that droughts in global key breadbasket regions, precipitation extremes over highly populated areas, and fire weather extremes across forests at 2 °C of global warming may turn out to be much more extreme than previously assumed.
www.nature.com/articles/s41...

3 weeks ago 14 4 0 1
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🚨 Four new PhD projects in Hobart at @utas.edu.au!

Work on precision #climate tracking in the Southern Ocean:
1️⃣ ocean heat uptake
2️⃣ human-induced salinity shifts
3️⃣ energy and sea level budgets
4️⃣ changes in the overturning circulation

⚠️ Applications close 1 April

▶️ www.utas.edu.au/research/deg...

3 weeks ago 5 6 0 0
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Really important new work on emperor penguin populations - and more bad news, unfortunately. Significant declines in recent years at key Ross Sea colonies emphasize the need to better understand the relationship between sea ice conditions and the species' success.

3 weeks ago 2 1 0 0
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Michela Savignano’s first PhD paper is now online as a preprint in The Cryosphere:

"Temporal evolution of the Petermann Ice Shelf estuary constrained by remote sensing observations"

egusphere.copernicus.org/preprints/20... 🛰️❄️🧪

@cires.colorado.edu @cpom-uk.bsky.social @northumbriauni.bsky.social

4 weeks ago 7 5 1 1
Turquoise river braids surrounded by snow and little blocks of ice. Photo from a drone above.

Turquoise river braids surrounded by snow and little blocks of ice. Photo from a drone above.

The beautiful turquoise of the glacial rivers seen in south-east #Iceland isn't as visible in winter, but I was glad to get at least a hint of colour on this trip, as seen by my #DJIMavic3Pro drone.

4 weeks ago 91 8 2 0
About two dozen gentoo penguins and their chicks in a penguin rookery on a rocky slope above a fjord.

About two dozen gentoo penguins and their chicks in a penguin rookery on a rocky slope above a fjord.

A gentoo penguin standing on a stony beach and facing the camera

A gentoo penguin standing on a stony beach and facing the camera

A gentoo penguin with a large chick in the penguin rookery

A gentoo penguin with a large chick in the penguin rookery

A gentoo penguin withe two chicks, seen against a snowy slope in the background

A gentoo penguin withe two chicks, seen against a snowy slope in the background

Day 11 of my voyage to the #Antarctic Peninsula on the #tallship #BarkEuropa (continued): Gentoo #penguins on Danco Island.
#BusmansHoliday

4 weeks ago 11 1 1 0

A very important thread: Energy imbalance is important, but it shifts the focus away from the root of the problem (economy based on fossil fuel)

4 weeks ago 2 0 1 0
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Warmer ocean is driving the Antarctic sea ice 'regime shift' Since 2016, Antarctic sea ice extent has been declining sharply – now scientists are piecing together how strong winds and warm deep water have played a part in this abrupt transition

Since 2016, Antarctic sea ice extent has been declining sharply – now scientists are piecing together how strong winds and warm deep water have played a part in this abrupt transition

4 weeks ago 15 7 0 0
Silvery early morning light on a cove containing small icebergs and brash ice, beneath a cloudy sky. A line of snow-covered mountains can be seen along the horizon and there is a rocky bluff on the right in the foreground.

Silvery early morning light on a cove containing small icebergs and brash ice, beneath a cloudy sky. A line of snow-covered mountains can be seen along the horizon and there is a rocky bluff on the right in the foreground.

Six years ago today. The early morning view from the @bas.ac.uk Rothera research station on Adelaide Island, #Antarctic Peninsula, shortly before I heard the news that the UK had gone into #lockdown.

4 weeks ago 11 4 0 0
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Satellite altimetry data confirms high mass loss from Thwaites glacier over next 50 years - eo science for society Ice sheet evolution is the key unknown in future sea level projection. Numerical models are the best way to assess ice sheet response to future changes in

🛰️ How satellite altimetry is improving projections of Antarctic ice loss

New research shows satellite altimetry data confirms high mass loss from Thwaites glacier over next 50 years 👇

🔗 eo4society.esa.int/2026/03/19/s...

1 month ago 4 3 0 0

Read this article, featuring @restingdinoface.bsky.social as well as @jmtheodor.bsky.social

1 month ago 8 3 0 0
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Why I may ‘hire’ AI instead of a graduate student “It can competently perform a lot of the work I need immediately,” this professor writes

This is so unbelievably bleak. If this is what the future of science looks like, I want no part of it.

1 month ago 3 2 1 1
New review of surging glaciers in Svalbard! I am pleased to share our new paper in which we review the current distribution of surging glaciers in Svalbard! Published in Earth Science Reviews, you can find the full paper here: The surging Borebreen in 2024. In this review, we analyse the methods use to detect glacier surges in the past and present using remote sensing techniques, geophysical methods, and palaeo-glaciological analysis such as landforms, historical imagery and archival maps.

New review of surging glaciers in Svalbard!

I am pleased to share our new paper in which we review the current distribution of surging glaciers in Svalbard! Published in Earth Science Reviews, you can find the full paper here: The surging Borebreen in 2024. In this review, we analyse the methods…

1 month ago 12 7 0 0

good storytelling and nice presentation of the science - I liked it

1 month ago 1 0 0 0
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weathered smothering a world in glaciers

It's here!! Be the first to read an article on At Its Core, a substack about past climate change. This one is a story about a time traveling geologist making a dangerous trip to the planet's first Snowball Earth event. Don't forget to like, share, and subscribe! open.substack.com/pub/climatea...

1 month ago 5 3 1 1

It really is not as simple as Hormuz closure = fossil fuel demand destruction = clean transition. Seems more like lessons for what happens when a transition is sudden and unplanned

1 month ago 7 2 2 0
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🆕OCEAN ICE Publication: Mapping tipping risks from Antarctic ice basins under global warming.

Torsten Albrecht a WP6 Co-lead in OCEAN ICE, is Co-Author on this paper!

Read an article summarising the paper here: ocean-ice.eu/ocean-i...

1 month ago 2 6 1 0
The edge of a glacier seen from a drone, directly above. There are many pieces of intensely turquoise ice, som attached to the glacier with crevasses, some having broken off. There is some brown water around.

The edge of a glacier seen from a drone, directly above. There are many pieces of intensely turquoise ice, som attached to the glacier with crevasses, some having broken off. There is some brown water around.

A turquoise iceberg seen in a frozen lagoon from above.

A turquoise iceberg seen in a frozen lagoon from above.

Turquoise icebergs seen in a frozen lagoon from above.

Turquoise icebergs seen in a frozen lagoon from above.

The edge of a turquoise glacier with deep smooth crevasses, and some brown meltwater around.

The edge of a turquoise glacier with deep smooth crevasses, and some brown meltwater around.

More ice from above in a wonderful frozen glacial lagoon in #Iceland last week.

#DronePhotography #DJIMavic3Pro #AwesomeFoursome

1 month ago 164 21 3 0

What I gather from this ancient Babylonian dialogue (and others) is that we have grappled with injustice for millennia. We've talked about it with our friends, and we've felt understandably depressed. How can we not?

But we will keep fighting, and the smoke will clear one day...

1 month ago 572 58 12 4

How much more evidence do we need? The ultra-rich and the governments supporting them will destroy everything for the sake of profit, power and pride. Nothing is precious to them - not human life, not the living world - except their own wealth and status. Our survival depends on resisting them.

1 month ago 7898 2658 235 145
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UK must stockpile food in readiness for climate shocks or war, expert warns Prof Tim Lang says country produces far less food than it needs to feed population and is particularly vulnerable

I can sort of understand people treating climate breakdown as a distant, peripheral issue when they thought it was just a future threat to polar bears and Pacific Islands

But we're seeing these sorts of warnings all the time now, and little seems to have changed

1 month ago 102 49 11 4
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Sea level much higher than assumed in most coastal hazard assessments - Nature Meta-analyses on a global scale show that the measured coastal mean sea level is higher than assumed in most coastal hazard assessments.

I’m grumpy about this paper, which has been poorly communicated in a way that’s taken up a bunch of my time this week and is the result of framing decisions in the paper itself.

1 month ago 21 12 1 2