Rosie A. Fisher | Lightnews

Rosie Fisher

@rosieafisher.bsky.social

1.7K followers 890 following 400 posts

Land surface modeller, because the land is where most of the fun things happen. @CICERO, Oslo. Co-chair of the Community Land Model. Open science enthusiast. Humanist. Partly functioning ears & eyes. Talks lots to compensate... 🇬🇧🇺🇸🇫🇷🇧🇻 .. more

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Environmental science 67%

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Rosie Fisher @rosieafisher.bsky.social · Nov 10

I made a list (or 'starter pack') of Land Surface Modelers, because that's the kind of thing one does on #bluesky. Please tell your friends and also (v. important) TELL ME if you want to be added. We need more people here! go.bsky.app/Mw4tJ3t

Rosie Fisher @rosieafisher.bsky.social · 2d

I'll send it over, @myplantsdance.bsky.social

Rosie Fisher @rosieafisher.bsky.social · 2d

Thanks! I'll just leave it like this to avoid reposting confusion...

Reposted by Arthur Argles

Rosie Fisher @rosieafisher.bsky.social · 2d

A new paper in @nature.com led by Jeff Chambers, finds evidence of climatic mortality thresholds combining heat and drought, & explores the emergence of 'hypertropical' climates in future climates. Amazing multi-decadal effort by the field teams involved 👏
www.nature.com/articles/s41...

www.nature.com

Reposted by Rosie A. Fisher, Nancy Knowlton

Jan Rosenow @janrosenow.bsky.social · 2d

No surprise: new analysis shows that heat pumps can deliver excellent performance even in older buildings with no meaningful correlation between building age & heat pump efficiency.

This is in line with my own experience of having a heat pump in a 1880 Victorian home with only modest insulation.

Rosie Fisher @rosieafisher.bsky.social · 3d

This is, indeed, one of the most often-discussed potential tipping points. Noting that we don't actually say anything about rainfall recycling, and so the self-reinforcing properties of a tipping point are not part of this paper.

Rosie Fisher @rosieafisher.bsky.social · 4d

There's a cool press release and video from LBNL here news.berkeley.edu/2025/12/10/a...

statics.teams.cdn.office.net

Reposted by Yadvinder Malhi, Darío Martin‐Benito

Reposted by Scott C. Doney, Benjamin I. Cook

Rosie Fisher @rosieafisher.bsky.social · 6d

Climate science job opportunity @cerfacs in Toulouse :) cerfacs.fr/en/offer/ful...

Full-time Research Scientist Position in Climate Science - Cerfacs

cerfacs.fr

Rosie Fisher @rosieafisher.bsky.social · 6d

The NorESM community will (also!) be running a tutorial in January 14-16th, in Bergen, Oslo and online (for those who prefer their ESM tutorials in an Euro-timezone!). It is focused on NorESM2.3 but the workflow will be similar for the (in development) NorESM3. docs.google.com/forms/d/e/1F...

NorESM user workshop 2025 (jan. 2026)

Event Timing: January, 14 - 16, 2026 Deadline: Answer by Friday January 2nd About NorESM The Norwegian Earth System Model (NorESM) is a coupled Earth System Model developed by the NorESM Climate mod...

docs.google.com

Rosie Fisher @rosieafisher.bsky.social · 6d

New FATES PhD position in Luxembourg :). app.skeeled.com/offer/c/68a8...

Luxembourg Institute of Science and Technology (LIST)

SD-25116 – PHD IN FOREST ECOSYSTEMS MODELLING

app.skeeled.com

Reposted by Scott C. Doney, Benjamin I. Cook, Caroline E. Farrior

Rosie Fisher @rosieafisher.bsky.social · 6d

Happily, there will be a CESM tutorial again this year @ncar-ucar.bsky.social Also, much like learning a Scandinavian language, once you can run CESM, you can probably also run NorESM, CMCC and E3SM, so it's like a 4-in-1 deal... :) www.cesm.ucar.edu/events/tutor...

CESM Tutorial Application | Community Earth System Model

www.cesm.ucar.edu

Rosie Fisher @rosieafisher.bsky.social · 13d

What you need is an eight year old to fill it will 3000% minecraft videos.... Then you won't see any of that.

Rosie Fisher @rosieafisher.bsky.social · 20d

Yes, they were. I think we arrived after the tipping point had passed. That was 4 years ago, and there were no adverts for any ICE vehicles at all - I remember this being different to France/UK at the time...

Rosie Fisher @rosieafisher.bsky.social · 20d

It's not giving me 'social tipping point' vibes yet...

Reposted by Rosie A. Fisher

Jonesy @branscombe.bsky.social · 22d

Now, that's how you build a stile.

Rosie Fisher @rosieafisher.bsky.social · 25d

*cheatED* :/

Rosie Fisher @rosieafisher.bsky.social · 25d

@ecoclimatelab.bsky.social
we cheating by starting with yours and
@czarakas.bsky.social
results ;) That 'd_max' parameter is an amusingly big lever...

Rosie Fisher @rosieafisher.bsky.social · 25d

This kind of thing normally takes months/years to execute in its entirity. Nothing like the pressure of CMIP deadline to focus the mind(s).

Rosie Fisher @rosieafisher.bsky.social · 25d

hats-off to the small-but-mighty NorESM team, who have conceived of, planned, constructed, submitted and analyzed a multi-stage coupled PPE ("perturbed physics ensemble") -including every model component- in about two weeks flat. Some A-grade technical prowess/collaborative skillz going on over here

Rosie Fisher @rosieafisher.bsky.social · 25d

I think it's quite land-centric, tbf (given it's me and Kjetil he's talking to ;) )

Rosie Fisher @rosieafisher.bsky.social · 25d

I learned last week that one of my great great grandparents and their forebears were from Shap. This made me enormously pleased.

Rosie Fisher @rosieafisher.bsky.social · 26d

I don't do anything, tbf. There's pretty much nothing in my research output on 1.5C...

Rosie Fisher @rosieafisher.bsky.social · 26d

Sorry, but your logic is not very clear. How will delaying net zero targets make any difference to what Russia does? Are those things strongly coupled? Why?
And whose national interest are you assuming I am batting for here??

Rosie Fisher @rosieafisher.bsky.social · 26d

So you are in the "do nothing now because it's hard, and leave it to our kids to sort out all the mess" camp? Just to be clear... (mass extinctions and coral death and fires and droughts and crop failures and heatwaves notwithstanding? )

Rosie Fisher @rosieafisher.bsky.social · 26d

1.5C is what we think we need to avoid "dangerous" climate outcomes in the natural climate system. Which does not care about your S-curve and your national security and your computer chips. llustrating how far away we are from that seems perfectly reasonable to me.

Rosie Fisher @rosieafisher.bsky.social · 26d

I am not sure why national security in the Baltics nor having chips from Taiwan is at all incompatible with ambitious climate targets? Climate change causes its own threats to national security, and the solution on the table generates rather than erodes energy independence. Ideology works both ways.

Rosie Fisher @rosieafisher.bsky.social · 26d

Many thanks to @eilifursinreed.bsky.social for translating this nice piece he wrote on the ESM development prcess... :)

CICERO Center for International Climate Research @cicero.oslo.no · 26d

"He's an expert on oceans, she's an expert on land processes, those two specialize in the atmosphere," Aas explains.
Each week, they gather digitally to discuss the globe—or more precisely, a representation of it. Together, they're developing a climate model.

Rosie Fisher @rosieafisher.bsky.social · 26d

I am not quite sure why you are so worked up over this plot. We aren't on track for 1.5C and this plot make that very clear...

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