Remix.run Logo
nejsjsjsbsb 21 hours ago

Climate change enters the chat...

adrianN 20 hours ago | parent | next [-]

Even pessimistic scenarios don't predict threats to buildings (other than war, which to my knowledge never was insurable) in most areas of the world.

agsnu 20 hours ago | parent | next [-]

A significant portion of human structures are located close to the coast (seaborne trade having been a huge enabler of economic development for a few hundred years) and are exposed to flooding from rising sea levels, or built in valleys that are increasingly at risk from flooding due to far-above-long-term-historic-norms precipitation runoff (higher atmospheric temps lead to more energy in weather systems; see eg massive floods in Europe in the past few years).

adrianN 19 hours ago | parent | next [-]

Compared to the other challenges climate change poses those are fairly simple engineering problems. The Netherlands manage fine with large parts of the country below sea level.

avianlyric 16 hours ago | parent | next [-]

You’re ignoring things like the geological conditions in the Netherlands, they have very peaty soil which is fairly impermeable to water. Which makes the task of keep the sea back pretty easy, you just build a big wall.

But if you look in places like Florida, the ground conditions there are substantially more porous. If you try to keep the sea back there with a simple wall, it’ll just flow under the wall through the soil. You would have to dig all the way to bedrock and install some kind of impermeable barrier to prevent most of Florida from flooding due to sea level rise. Something that’s unbelievably cost prohibitive to do.

The Netherlands only exists below sea level because their ground conditions meant it was possible to pump out the country using technology available in the 1740s. If the ground conditions weren’t basically perfect for this kind of geo-engineering, the Netherlands simply wouldn’t exist as it does today.

You’re using an example that exists purely as a result of survivorship bias, as an argument that it’s practical to apply the same techniques or achieve the same outcomes anywhere else. Completely ignoring the fact that your example only exists because a unique set of geologic conditions made it possible, and those conditions are far from universal, and not in anyway correlated with places we humans would like to protect.

wiredfool 15 hours ago | parent [-]

Karst Topography enters the room....

jyounker 17 hours ago | parent | prev | next [-]

The Netherlands has been planning for the impacts of sea-level rise for decades now. At least twenty years ago the government broached the idea (with TV commercials) that they were going to have to abandon some are areas to the sea.

llamaimperative 17 hours ago | parent | prev | next [-]

A few critical ingredients being: no denialism about their vulnerability, strong social and economic commitment to reducing vulnerability, lack of reflexively blaming floods on illegal immigrants or trans people

mrguyorama 11 hours ago | parent [-]

Also they don't blame the climate or weather on democrats there.

llamaimperative 10 hours ago | parent [-]

I forgot that one! The Dems controlling the weather. Big one!

graemep 19 hours ago | parent | prev [-]

and sea level rises are slow enough that countries with more high ground than The Netherlands can just not rebuild/maintain old houses in vulnerable positions and build higher (often just a bit further in) instead.

Some buildings buy the coast (especially in port cities) and have steep rises anyway.

There is a huge threat of cultural loss - e.g. Venice.

ekianjo 19 hours ago | parent | prev [-]

[flagged]

soco 18 hours ago | parent [-]

Said the American living in a log cabin in Montana. But if you're from, say, Tuvalu, or Venice, the 15cm rise of the last decades is definitely noticeable, and the trend has no reason to stop or decrease.

ljf 18 hours ago | parent | next [-]

Agreed - Where I live now, 8 thousand years ago I could have walked all the way from the UK to Holland.

Even just 1000 years ago the coastline here went four miles out to sea compared to today.

In the last 20 year we've seen the erosion of the coastline here accelerating - regular news stories about people losing their houses to the sea: https://www.norfolk.gov.uk/article/56352/Challenges-of-coast...

It doesn't matter if you think it is human caused or not, the sea level is undeniably rising:

https://royalsociety.org/news-resources/projects/climate-cha....

vintermann 16 hours ago | parent | prev | next [-]

Sea level naturally varies (if we define it liberally). It's at the times of maximums - high tide plus storm surge - we notice, otherwise it's easy to miss.

But when those high tides plus storm surges hit, we really notice sea level rise.

georgeplusplus 16 hours ago | parent | prev [-]

it used to be reported that Venice is sinking into the water but now the climate nut jobs have flipped it to it’s actually because it’s rising. I guess it’s all relative

soco 16 hours ago | parent [-]

It's difficult to not be sarcastic but let me try my best: Venice sinking is what happens when water is rising.

avianlyric 16 hours ago | parent [-]

Eh, Venice is also sinking regardless of sea level rise. That’s what happens when you build a city on top of what is practically a swamp. No surprise that big heavy buildings put on top of loose, waterlogged soil are gonna slowly sink into that soil.

swiftcoder 20 hours ago | parent | prev | next [-]

I don't know about that. The Iberian peninsula is not historically at much risk for natural disasters, and we now suffer alternating forest fires and floods pretty much every year...

lores 19 hours ago | parent [-]

I remember forest fires yearly in northern Spain in the 80s. Are they more violent now?

swiftcoder 6 hours ago | parent | next [-]

Mostly they seem to have planted a lot more Eucalyptus, which makes the fires worse. The severe floods on the other hand seem to be catching everyone by surprise.

nejsjsjsbsb 18 hours ago | parent | prev [-]

Climate change deals frequency, rather than novelty. Oh and as crypto bros like to say: we're early.

notabee 13 hours ago | parent | prev | next [-]

That's not really true. The introduction of so much extra energy into the atmosphere is going to make weather extremes worse all over the world, and harder to predict as historical models become less relevant. Large scale pattern changes like the AMOC shutting down are going to completely change many local weather patterns so that e.g. places that have little history of tornados will start having them, or places that used to be too wet for wildfires will suddenly experience them in extreme drought conditions. Despite scientists' best efforts, we're running a global experiment with no control group and predictions will only become more difficult the harder we push the system into a new state.

rbanffy 17 hours ago | parent | prev | next [-]

> Even pessimistic scenarios don't predict threats to buildings

Floods, storms, droughts, fire? They appear to be getting worse.

More restrictive codes designed for better fireproofing buildings, for instance, can solve a number of problems in California in fire prone areas. Another thing that has a political solution is forest management. Lack of water can be solved by desalination, which becomes an energy problem rather than a water one. Very dry areas can benefit from solar panels because they reduce water loss from evaporation, thus reducing the pressure on water supplies.

It is expensive, but that's another problem.

CalRobert 20 hours ago | parent | prev | next [-]

Seems like having the ocean at your door would be bad for the structure? Or burning down in a hot dry period…

adrianN 19 hours ago | parent [-]

Why would a city like London or Paris burn down in a hot dry period?

mr_toad 9 hours ago | parent | next [-]

London is at much more risk of flooding. Parts of London were built on wetlands not much above sea level, and there’s a big river running right through the middle.

arrowsmith 17 hours ago | parent | prev | next [-]

1666 has entered the chat.

snacksmcgee 19 hours ago | parent | prev [-]

You're refuting a lot of established facts about the risks of climate change, in a way that seems indicative of a certain ideology. Can you explain more what your position is?

adrianN 18 hours ago | parent [-]

My position is that climate change is an existential threat to civilization, but buildings are not at a risk that would make them uninsurable. We build cities both in very wet and very hot and dry climates without much trouble. Those are engineering problems we can solve without much trouble.

llamaimperative 17 hours ago | parent [-]

But with lots more money, which is what insurance deals with

Of course they’re insurable at some premium. The question is whether there is any premium someone is willing to pay that can also cover the risk.

notabee 13 hours ago | parent [-]

It's also a social coordination problem. For example a neighborhood where all the homes have to be fire resistant is going to fare a lot better, and probably be cheaper for the individual home owners to build and insure, than the one fire-resistant home in a neighborhood of tinder boxes. I don't think the prognosis is good for the U.S. in that regard. We have very little social cohesion and a lot of parties interested in making the situation worse for their own benefit.

helboi4 19 hours ago | parent | prev | next [-]

You literally pulled this take out of your ass. Water and fire can shockingly ruin buildings.

nejsjsjsbsb 20 hours ago | parent | prev [-]

Except for Fire?

topspin 7 hours ago | parent | prev | next [-]

How did climate change cause vast neighborhoods of single-family wooden mcmansions to be constructed with ~3 meters of separation?

ekianjo 19 hours ago | parent | prev | next [-]

Still waiting for the water to flood New York...

randerson 16 hours ago | parent | next [-]

Hurricane Sandy flooded big parts of lower Manhattan and Brooklyn. I have friends who couldn't go back to their apartments or offices for months afterwards.

jyounker 17 hours ago | parent | prev | next [-]

That happened six years ago: https://www.businessinsider.com/severe-rainfall-hits-new-yor...

Macha 14 hours ago | parent [-]

And last year: https://www.youtube.com/watch?v=CxqswOkZMSI

fragmede 18 hours ago | parent | prev [-]

Hurricane Ida in 2019 brought torrential rains which flooded the city, especially the subway.

jeffhuys 20 hours ago | parent | prev [-]

Pole drift.

soco 18 hours ago | parent | next [-]

Does it really matter if my house burns because of pole drift or because of climate change? I don't like it burning either way. So if there is something I can do against my house burning, (and I know there are things I can do against that) I will definitely try that. And I believe we agree that we could do things, right?

defrost 20 hours ago | parent | prev [-]

Magnetic, rotational, geodetic .. ?

What are you trying to say?

sampo 17 hours ago | parent | next [-]

> What are you trying to say?

Perhaps https://en.wikipedia.org/wiki/Cataclysmic_pole_shift_hypothe...

defrost 5 hours ago | parent [-]

Might as well throw in the risk of being wiped out by a comet.

Climate risks are greater and more immediate than either comets or poles shifting.

falcor84 20 hours ago | parent | prev [-]

Can there even be geodetic drift of the poles? I sort of assumed that our lat/lon system is based on the poles being fixed points as a matter of definition.

defrost 19 hours ago | parent [-]

Each ellipsoid is rigidly defined (well, some historic ones are sloppy), so WGS84 won't drift .. (that's a bold statement, is it true down to the micron and if so what are the absolute* datums to reference against?).

That said, there are literally hundreds of historic pre WGS84 ellipsoid|datum pairings, each with a somewhat different "survey map pole".

Historically geodectic poles have shifted as a function of datums.

The main point here, such as it is, was to poke at the infomation free aspect of "polar drift" as a comment .. which pole and what does that have to do with climate change? etc.

avianlyric 16 hours ago | parent [-]

We still use many of those old ellipsis and datum’s today. When you’re doing human things, like surveying land, and defining property boundaries. It’s nice to work with a coordinate system which remains fixed relative to the area you’re surveying, and doesn’t drift due to annoying things like tectonic movement, or your entire country slowly tipping into the ocean.

defrost 5 hours ago | parent [-]

FWiW I'm old enough to have navigated via LORAN and travelled through over two thirds of the 190+ countries on the planet tying in multitudes of old datums to the "new" WGS84 standard as part of a career in geophysical surveying (Gravimetrics, tides, magnetics, radiometrics, EM, etc.)

I'm not old enough to have seen Great Britain and relate isles pressed down by the weight of kilometres of ice though .. that'd be a great great great grand something that saw that.