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Oceans hit highest temperature on record

bbc.com

341–350 of 696 posts

Re: Oceans hit highest temperature on record

#341
The things that will work, but can't be done: Walk/bike instead of vehicles, no crypto and AI (tremendous hype and speculators and grifters), Lower population (religions are opposed to it), degrowth (nobody wants to live a relatively substandard life, all the stuff is for status signaling), fly less, don't eat as much beef, etc. Degrowth is the best way, but nobody can walk entire population down that path. It has to be everyone or no one will do it because its all comparison based living.

What are possible?

1) Plug-in solar and batteries: The next population boom is in Africa. Africa probably has the advantage of no legacy grid with fossil fuel interests and power plants. They can leap frog and go entirely offgrid or mini community level grids.

2) Vertical solar: Solar deployments at scale today use the legacy grid, production far away and transmission lines to bring power to cities. Solar is dirt cheap, the biggest costs now are land and transmission lines. Instead, we can do vertical solar in cities. Cover every surface. Adds ~4 hours of production every day. We already know rooftop solar works, with vertical, maybe cities can become self-sufficient.

3) EVs for energy storage. 1.8 billion vehicles in the world, if they all become EVs, they are the biggest energy storage without having to build a separate energy storage layer saving trillions of dollars. The first step is to stop buying ICE cars. It will take 20 years for the entire fleet to be electric.

Solar is growing now, but curtailment is at 20%. Storage is the bottleneck. Solar will soon hit a wall, we can't grow solar because it becomes financially unviable to add more production, curtailment will increase and prices will go a lot more negative (500 million times/year in the US).

People are going to buy cars anyway, we can't convince anyone to walk/bike, just have them buy EVs instead. This creates the storage to continue to grow solar.

Re: Oceans hit highest temperature on record

#342

Earlier quoted context omitted.

That BBC documentary shows or exposes very shallow thinking skills at this timestamp 6m42s: https://youtu.be/_xZCh8eDZFc?si=AHyDPgoDucsCRllS&t=402 They claim the panama canal is continuously fed by freshwater for the canal locks (which segment the canal into sections with different water levels, and which enable ships to be raised or lowered to the next water level during travel along the canal). It's 2026, why are h…

So putting the technical critique aside, are you blaming the BBC for accurately reporting how the canal functions?

I don't have the resources / time / interest to verify if:

A) the BBC retardedly misreports how the Panama Canal is operated today, or if

B) they correctly report how the Panama Canal is operated retardedly

which is why I phrased it that way...

I am only interested in the physics, not the politics...

Re: Oceans hit highest temperature on record

#343

Does anybody else feel like this is the answer to the Fermi paradox? Advanced civilizations simply exploit, consume, and pollute their way of existence.

What if we found ourselves on a planet that didn't have fossil fuels?

Then there is a good chance we would never have moved up to a technological state that allowed us to leave the planet. We probably wouldn't also be facing blow back from digging up and burning the planets solar battery.

Re: Oceans hit highest temperature on record

#344

Does anybody else feel like this is the answer to the Fermi paradox? Advanced civilizations simply exploit, consume, and pollute their way of existence.

It has been brought up before and it seems plausible. There is no guarantee that we have to leave the planet in any meaningful way or even survive for that matter.

Re: Oceans hit highest temperature on record

#345
We knew about this all since the 1980's. Carl Sagan testified before congress in 1985 [1]. That's over 40 years ago.

Yet, we continue to burn more and fossil fuels; solar, wind, EVs, etc, non-withstanding. And right now some governments are actively spending money to work against renewable energy.

At this point I am afraid that we humans will only act when the alternative is unaffordable, when the forest is already on fire. I hope by that time it won't be too late.

Those of us who have been saying this all along won't even get the hollow satisfaction of an "I told you so!", because we'll be too busy surviving.

Vote, drive less (combustion engines), fly less, use public transportation, check your utility mix (and demand a larger renewable fraction), install solar, lobby, buy more local (where possible), consume less, support those with jobs displaced by renewables, accept some loss on your fossil stocks, ...

[1] https://www.youtube.com/watch?v=Wp-WiNXH6hI

Re: Oceans hit highest temperature on record

#346

I can feel it. The weather this year up in Canada here has been extremely odd. Constantly. You can tell something is off.

In Sydney it has been raining almost non stop for a year. Really odd. Garden loves it, I'm planting non-endemic native (primarily tropical) species from further north along the coast. I expect a snap-back to extreme drought during this or the subsequent summer. But come further warming, we'll have a jungle.

Yeah, in Melbourne here. It feels like Winter never really got going. Yeah, there is some rain and there have been a hand full of cold mornings at best. I do wonder how this summer is going to go, it is going to hit right at the peak of El Nino and they are anticipating some very dry conditions.

Re: Oceans hit highest temperature on record

#347

Earlier quoted context omitted.

China installed more solar capacity in 6 months than the US has installed in its entire existence [1] To say they’re winning the race implies there even is a race. It’s a super car vs a snail. [1] https://etangonam.com/?p=805

I know. I just don’t understand why they are diversifying between solar and coal, instead of just putting all new investment into solar or other renewables.

Wind produced 10% of China's electricity last year, and its share is growing at 1% per year while coal's share shrinks. https://www.nytimes.com/2026/05/05/business/china-wind-turbi...

Re: Oceans hit highest temperature on record

#348

I try to do my part to the best of my ability. But obviously it's only a droplet in the ocean (hah). But if I'm being honest, what scares me far more than this is the capability of humans to "force" a solution on the world.

If one would have to do the best of its ability then one should adapt very quickly its consumption patterns (stop buying so many things, get minimalist), food patterns (food is likely the per-capita biggest environmental destroyer, eating fish and beef is very taxing on the planet e.g.), travel patterns (no airplanes, use bikes/feet/public transports, cars as last resort). Those aren't small things to ask and I under…

Pretty much this.

While each action is tiny, collectively they add up.

The rain drop doesn't blame itself for the flood.

Re: Oceans hit highest temperature on record

#349

Earlier quoted context omitted.

So putting the technical critique aside, are you blaming the BBC for accurately reporting how the canal functions?

I think they were saying "That BBC documentary shows or exposes very shallow thinking skills at this timestamp". not " " That said, I can't quite understand the complaint. It's either take the freshwater out of the lake and into the ocean or take the ocean water into the lake (or invest build the entire length without using natural bodies). The former seems to make a lot more sense and is effectively what's supposed…

No connection to a lake is necessary, imagine 2 locks in parallel both connected to the same low water level canal section "on the left" and both connected to the same high water level canal to the right (its not necessary to have 2 locks in parallel, its just easier to demonstrate the scheme doesn't require significant energy consumption):

Imagine one lock is currently filled to the high level, while the other is currently filled to the low level. The locks have been closed. As you let water from the high lock flow into the low lock through Archimedes screws, those screws can lift a weight, until they have equilibrated at the midpoint of the high and low water levels. But you have raised the weight and can now use that to power the draining of the lock that has only halfway sunk in level, by pumping its water to the lock that has only halfway risen. Apart from friction there is no energy consumption. Slow quasistatic transfer drives the friction energy consumption to 0. In practice you want to use an "extra" weight to attain higher pump speeds, and then recover the kinetic energy. That will consume more friction energy, but a small number of solar panels suffice, the energy is not used to lift water, but to overcome friction (haste makes waste).

Re: Oceans hit highest temperature on record

#350
post #234

Earlier quoted context omitted.

That BBC documentary shows or exposes very shallow thinking skills at this timestamp 6m42s: https://youtu.be/_xZCh8eDZFc?si=AHyDPgoDucsCRllS&t=402 They claim the panama canal is continuously fed by freshwater for the canal locks (which segment the canal into sections with different water levels, and which enable ships to be raised or lowered to the next water level during travel along the canal). It's 2026, why are h…

> Keep the freshwater, use it for irrigation etc. In this scenario, haven't you poured a bunch of ocean water into the lake? I don't see how to can fill the locks with ocean water and not have it pour into the lake.

no connection to a lake is necessary.
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