Comment by ok_computer | Hacker News Reader

Comment by ok_computer | Hacker News Reader

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Ok, arctic sea ice.

Ice exists at temperature below 0C or 32F at 1atm AND at system energy levels below the enthalpy of melting for liquid water, or latent heat for this first order phase change.

Thermodynamics uses temperature and pressure to explain system energy of molecules for liquid vapor solid phase systems. Latent heat is the esoteric part of this phenomenon because it requires a scientific education to understand calculus and work. Understandably, everyone can grasp temperature.

I think your comment is a perfect example of misdirection and people using “data driven methods” to attack a “first principles” explanation of physical phenomena.

Here’s a link because that gives my idea more weight.

https://earth.gsfc.nasa.gov/cryo/data/current-state-sea-ice-...

https://en.m.wikipedia.org/wiki/Arctic_sea_ice_decline

https://www.nature.com/articles/s41586-022-05686-x

https://www.science.org/doi/10.1126/science.adj8469

Computer people talk about scientific methods and their “home lab” stuff, ai and inherent structure of data then absolutely fall for the facebook-grade-misinformation arguments to not trust something that is too mainstream. Jfc

you mean the sea ice, that had the highest extent in 20 years this year? Or a different sea ice, perhaps the one they always trot out around January? you know, when it's summer in the southern hemisphere?

The sea ice data isn't 1:1 with the seasons, so "data scientists" and "climate scientists" pick the cutoff date that makes the best headline. Even this year they were saying the ice was lower than average, but they cutoff 3+ weeks early, the ice was above average a few weeks later.

https://usicecenter.gov/PressRelease/ArcticMaximum2024

Besides all this, i am unsure if you're supportive or not of what i said.

I admit data collection is imperfect, especially looking back 200 years. But to attack a fairly sound hypothesis that is multi factorially demonstrated in physical geological behavior, I wholeheartedly disagree with.

Just because US weather stations in the 70’s were more rural than urban does not in itself gives credence to the idea that climate change/warming/ greenhouse gases is a nonissue or somehow a totally misunderstood non-warming phenomenon. Even a climate that tended to one mean value zero standard deviation throughout the year would be devastating coming from our current temporal and geographical distribution.

Your point about weather stations is a technical detail in data collection while there are several other corroborating methods indicating a warming ocean and atmosphere, albeit not geographically uniformly distributed. But you have this gotcha fact about weather stations ambient baseline temp vs some platonic ideal temp that reflects what’s going on in the abstract notion of a climate.

The sea ice has satellite photo analysis (area) dating to 70’s or 80’s with daily or weekly granularity.

I cannot convince a climate change denier or skeptic but am leaving that comment and this one hoping that observers don’t just take your initial counter-fact to be a valid falsifying argument.

As everyone says weather is not the climate, spurious yearly data do not nullify long form trends, and I’d just look at low pass filtered or line fit or yearly average of granular image data to argue that there is a time localize trend since the 80’s consistent with a warming ocean.

I disagree with you I think you used logical fallacies to misdirect and cause skepticism about something that is fairly corroborated and the debate needs to focus on mitigation or investment or policy changes.

Edit I shouldn’t have used word geological bit meant ‘worldwide’

> you mean the sea ice, that had the highest extent in 20 years this year?

Your link says it's "the seventh highest recorded since 2006 when this metric from IMS was first tracked consistently". Where are you getting "highest extent in 20 years"?

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