this post was submitted on 28 Jan 2024
138 points (70.8% liked)

science

14061 readers
943 users here now

just science related topics. please contribute

note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry

Rule 1) Be kind.

lemmy.world rules: https://mastodon.world/about

I don't screen everything, lrn2scroll

founded 1 year ago
MODERATORS
 

Research paper referenced in the video that makes Dr. Hossenfelder very worried:

Global warming in the pipeline: https://academic.oup.com/oocc/article/3/1/kgad008/7335889

Abstract

Improved knowledge of glacial-to-interglacial global temperature change yields Charney (fast-feedback) equilibrium climate sensitivity 1.2 ± 0.3°C (2σ) per W/m2, which is 4.8°C ± 1.2°C for doubled CO2. Consistent analysis of temperature over the full Cenozoic era—including ‘slow’ feedbacks by ice sheets and trace gases—supports this sensitivity and implies that CO2 was 300–350 ppm in the Pliocene and about 450 ppm at transition to a nearly ice-free planet, exposing unrealistic lethargy of ice sheet models. Equilibrium global warming for today’s GHG amount is 10°C, which is reduced to 8°C by today’s human-made aerosols. Equilibrium warming is not ‘committed’ warming; rapid phaseout of GHG emissions would prevent most equilibrium warming from occurring. However, decline of aerosol emissions since 2010 should increase the 1970–2010 global warming rate of 0.18°C per decade to a post-2010 rate of at least 0.27°C per decade. Thus, under the present geopolitical approach to GHG emissions, global warming will exceed 1.5°C in the 2020s and 2°C before 2050. Impacts on people and nature will accelerate as global warming increases hydrologic (weather) extremes. The enormity of consequences demands a return to Holocene-level global temperature. Required actions include: (1) a global increasing price on GHG emissions accompanied by development of abundant, affordable, dispatchable clean energy, (2) East-West cooperation in a way that accommodates developing world needs, and (3) intervention with Earth’s radiation imbalance to phase down today’s massive human-made ‘geo-transformation’ of Earth’s climate. Current political crises present an opportunity for reset, especially if young people can grasp their situation.

My basic summary (I am NOT a climate scientist so someone tell me if I'm wrong and I HOPE this is wrong for my children), scientists had dismissed hotter climate models due to the fact that we didn't have historical data to prove them. Now folks are applying hotter models to predicting weather and the hotter models appear to be more accurate. So it looks like we're going to break 2C BEFORE 2050 and could hit highs of 8C-10C by the end of the century with our CURRENT levels of green house gases, not even including increasing those.

EDIT: Adding more sources:

Use of Short-Range Forecasts to Evaluate Fast Physics Processes Relevant for Climate Sensitivity: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019MS001986

Short-term tests validate long-term estimates of climate change: https://www.nature.com/articles/d41586-020-01484-5

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 20 points 6 months ago (2 children)

She's fine, as long as you don't take what she says at face value. Or automatically accept it. She has felt compelled to make videos on topics she really had no standing or need to. Packed with misinformation and false premise. When it comes to physics related things. Like climate change, she's probably fine. But if you want to see something so bad and wrong it's beyond cringe. Go check out her videos on trans issues and capitalism at least. I used to enjoy watching her and her schtick. But since then I have not watched a single new video of hers. Because she's not that Entertaining. And if she doesn't bother to make sure the information she's presenting is correct and just talks from her fee fees. What the point.

[–] [email protected] 2 points 6 months ago (1 children)
[–] [email protected] 6 points 6 months ago* (last edited 6 months ago)

When it comes to topics like particle physics and other physics related things. She's pretty decent. It's what she studied, it's what she does. So she tries to be cautious and responsible when it comes to that. Unfortunately that doesn't apply to other subjects. Which is why you have to be careful with anyone, not just her. But those videos definitely did sour me on her.