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Cuttlefush
Jan 15, 2014

gotta have my purp
Sure, Pablo

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Spime Wrangler
Feb 23, 2003

Because we can.

also anything over a 500-year event is basically "off the charts, we dont know, there's no data, that poo poo shouldn't have happened"

it's very much a sign that your distribution, as SirPablo said, is non-stationary and your old interval estimates are hosed

SirPablo
May 1, 2004

Pillbug

gently caress You And Diebold posted:

I hoped "a thousand weathers" would have made it clear I was joking

Infinite weathers are happening simultaneously

uvar
Jul 25, 2011

Avoid breathing
radioactive dust.
College Slice
Let a thousand weathers doom?

Oglethorpe
Aug 8, 2005

a thousand and one weatherly events

Irony.or.Death
Apr 1, 2009


Grundulum posted:

Isn’t that exactly how that works? *IF* you assume that all weather stations are independent, would you not expect one in a thousand to have a 1000-year event every year?

I would like to offer an apology; I took your bolding and asterisks to be an excessive extravagance that undermined the joke and the evidence tells me I was wrong.

SirPablo
May 1, 2004

Pillbug
GFS predicting the day after tomorrow

actionjackson
Jan 12, 2003

Seville is 106 right now after being 108 yesterday.

https://www.fastcompany.com/90763832/seville-is-the-first-city-to-name-and-categorize-heatwaves-like-hurricanes

Is the picture saying it was 116 on June 13th accurate? I don't remember hearing anything about that.

Cygna
Mar 6, 2009

The ghost of a god is no man.
I've gotten better at converting Fahrenheit to Celsius, but I kept looking at 40C and thinking "nah, I'm messing this up. No way it's going to be a hundred loving degrees over there." So I checked

:tif:

endlessmonotony
Nov 4, 2009

by Fritz the Horse

SirPablo posted:

Nah just trying to help people understand that the most doomer outcome doesn't always happen. So many models are run so frequently, you can always find a doomer scenario somewhere. It's all about probability - 40C was always possible but initially at a <5% chance, now up to 40% (from post above).

I know you goons know numbers, but this is also the doomer forum so I suppose that is on me to expect any different.

It's been clear for a long time you don't know numbers.

The probability doesn't change. That is not how probability works. You innumerate gently caress.

ekuNNN
Nov 27, 2004

by Jeffrey of YOSPOS

SirPablo posted:

Infinite weathers are happening simultaneously

You don't need a Weatherman to know which way the wind blows :jihad:

endlessmonotony
Nov 4, 2009

by Fritz the Horse
Looking at the models makes you go "welp gently caress, we're in trouble" because the models output predictions well out of historical range. Our models aren't perfect or reliable, though repeated cases of "that can't happen" right into "it happened" does make me question all the models that don't have the occasional really out there results, because now those models are incapable of accurately predicting reality. And thus are useless except for people who need "scientific" excuses to stick their heads in the sand.

As the date draws closer, the probability doesn't change. Our ability to predict the outcome improves. And the outcome is "that's a lot of dead people".

Perry Mason Jar
Feb 24, 2006

"Della? Take a lid"
What? The probability changes against the model's latest inputs. The probability of the weather event occurring doesn't change but you're presuming perfect modeling for some reason?

NeonPunk
Dec 21, 2020

SirPablo posted:

Ok maybe goons don't know numbers.

1-in-1000 years is a return interval. It is simply the reciprocal of 0.1%. A 1-in-100 year event is a bad way of saying something has a 1% chance of happening any given year. Obviously then that means a 1% chance event can happen several consecutive years or even multiples in the same year. Or it never happens in your life. As mentioned though, this assumes a well samples, non-stationary climate which we don't have, so they are gross estimates at best.

So if something that only supposed to happen 1% of the time ends up happening every year or even multiple times in a year is only 1% :thunk:

Perry Mason Jar
Feb 24, 2006

"Della? Take a lid"

NeonPunk posted:

So if something that only supposed to happen 1% of the time ends up happening every year or even multiple times in a year is only 1% :thunk:

That's correct. Think about it as, the probability of getting heads is 1 in 2. But there isn't actually anything stopping an outcome of heads, heads, heads, heads, heads... except extreme improbability.

Perry Mason Jar has issued a correction as of 16:57 on Jul 15, 2022

NeonPunk
Dec 21, 2020

Perry Mason Jar posted:

That's correct. Think about as, the probability of getting heads is 1 in 2. But there isn't actually anything stopping an outcome of heads, heads, heads, heads, heads... except extreme improbability.

Really? Say, wanna bet on a coin toss then?


(No, you may not check to see if it's a trick coin.)

endlessmonotony
Nov 4, 2009

by Fritz the Horse

Perry Mason Jar posted:

What? The probability changes against the model's latest inputs. The probability of the weather event occurring doesn't change but you're presuming perfect modeling for some reason?

I'm saying our modeling is hosed because it doesn't have historical data to draw on anymore, because the circumstances have changed. And those probability numbers don't - can't - account for changes we don't understand. SirPablo's stuck pining for a world that isn't coming back.

Perry Mason Jar
Feb 24, 2006

"Della? Take a lid"
On a fair coin the odds don't change so yes. That's exactly the point. If you roll heads, heads, heads, heads, the odds that your next flip lands on tails is 50%. The probability of landing on tails does not increase because of the four prior heads rolls.

Perry Mason Jar
Feb 24, 2006

"Della? Take a lid"

endlessmonotony posted:

I'm saying our modeling is hosed because it doesn't have historical data to draw on anymore, because the circumstances have changed. And those probability numbers don't - can't - account for changes we don't understand. SirPablo's stuck pining for a world that isn't coming back.

I'm operating under the assumption that Pablo's aware of the modeling crisis that's been happening since, er, 2019?

endlessmonotony
Nov 4, 2009

by Fritz the Horse

Perry Mason Jar posted:

I'm operating under the assumption that Pablo's aware of the modeling crisis that's been happening since, er, 2019?

It's pretty clear they're choosing to ignore it at every turn.

Enfys
Feb 17, 2013

The ocean is calling and I must go

I thought I understood numbers but every post I read in the past page is making my brain hurt

That might just be the beginning glimmers of heatstroke though

SirPablo
May 1, 2004

Pillbug

endlessmonotony posted:

I'm saying our modeling is hosed because it doesn't have historical data to draw on anymore, because the circumstances have changed. And those probability numbers don't - can't - account for changes we don't understand. SirPablo's stuck pining for a world that isn't coming back.

These are dynamic models. That means they use current weather data and fundamental physics to predict the weather.

You clearly don't understand that circumstances change and thus the probability of events occurring changes. What's the probability you get in a car accident today? We'll, if your plans right now are to sit in your house and go no where, then almost zero (I suppose a car could drive into your house). Now what if a friend calls and asks you to help them with something? Wow, the circumstances have changed and you'll be getting in your car, now the probability of a car accident has increased!

endlessmonotony
Nov 4, 2009

by Fritz the Horse

SirPablo posted:

These are dynamic models. That means they use current weather data and fundamental physics to predict the weather.

You clearly don't understand that circumstances change and thus the probability of events occurring changes. What's the probability you get in a car accident today? We'll, if your plans right now are to sit in your house and go no where, then almost zero (I suppose a car could drive into your house). Now what if a friend calls and asks you to help them with something? Wow, the circumstances have changed and you'll be getting in your car, now the probability of a car accident has increased!

Well, QED. Amazing.

Your models aren't reality you idiot mathfucker, they predict reality, except that most of those models are now incapable of predicting reality because they were built for circumstances that no longer exist.

NeonPunk
Dec 21, 2020

SirPablo posted:

These are dynamic models. That means they use current weather data and fundamental physics to predict the weather.

You clearly don't understand that circumstances change and thus the probability of events occurring changes. What's the probability you get in a car accident today? We'll, if your plans right now are to sit in your house and go no where, then almost zero (I suppose a car could drive into your house). Now what if a friend calls and asks you to help them with something? Wow, the circumstances have changed and you'll be getting in your car, now the probability of a car accident has increased!

That's a perfect analogy since the risk of getting into a car accident has vastly increased in the past 2 years for *mysterious* reasons. You wouldn't say that we had the same probability of getting into a car accident three years ago today right?

Hooplah
Jul 15, 2006


endlessmonotony posted:

Well, QED. Amazing.

Your models aren't reality you idiot mathfucker, they predict reality, except that most of those models are now incapable of predicting reality because they were built for circumstances that no longer exist.

climate is not weather. model forecasts arent dependent on climate, they're dependent on how we know weather works. why are you being such an rear end in a top hat

Dustcat
Jan 26, 2019

you guys are arguing over a philosophical question

models aren't reality, but probabilities in reality do also change as events unfold, unless you think the universe is deterministic

Notorious R.I.M.
Jan 27, 2004

up to my ass in alligators

endlessmonotony posted:

Well, QED. Amazing.

Your models aren't reality you idiot mathfucker, they predict reality, except that most of those models are now incapable of predicting reality because they were built for circumstances that no longer exist.

jesus man what did the weather models do to you?

Perry Mason Jar
Feb 24, 2006

"Della? Take a lid"
Lol I almost mentioned Laplace's demon when I said "you're presuming perfect modeling for some reason"

Because the demon can't exist in our universe as we know it, even in a "billiard ball" universe

SirPablo
May 1, 2004

Pillbug

endlessmonotony posted:

Well, QED. Amazing.

Your models aren't reality you idiot mathfucker, they predict reality, except that most of those models are now incapable of predicting reality because they were built for circumstances that no longer exist.

Idg why you're being obtuse. There are many dynamic weather models where the underlying physics are being updated as understanding proves and the science evolves. Here, you can go run this one yourself even.

https://www.mmm.ucar.edu/weather-research-and-forecasting-model

neutral milf hotel
Oct 9, 2001

by Fluffdaddy
new thread title:

Weatherdammerung 2022: told you so

or

Weatherdammerung 2022: standard deviation not enough for pervert forecaster

SirPablo
May 1, 2004

Pillbug

NeonPunk posted:

That's a perfect analogy since the risk of getting into a car accident has vastly increased in the past 2 years for *mysterious* reasons. You wouldn't say that we had the same probability of getting into a car accident three years ago today right?

Right. Circumstances change. Unless you're a time traveler and already know the future.

Real hurthling!
Sep 11, 2001




when someone gets called obtuse its probably time we all just grab a beer and talk about how hot it is

endlessmonotony
Nov 4, 2009

by Fritz the Horse

Notorious R.I.M. posted:

jesus man what did the weather models do to you?

Oh, no, this goes deeper into personal grudges with the math underlying this issue.

Literally the hill I died on.

Notorious R.I.M.
Jan 27, 2004

up to my ass in alligators

endlessmonotony posted:

Oh, no, this goes deeper into personal grudges with the math underlying this issue.

Literally the hill I died on.

You understand close to nothing about how weather modeling works though

Hooplah
Jul 15, 2006


neutral milf hotel posted:

Weatherdammerung 2022: standard deviation not enough for pervert forecaster

lol.

Fuck You And Diebold
Sep 15, 2004

by Athanatos

neutral milf hotel posted:

Weatherdammerung 2022: standard deviation not enough for pervert forecaster

Lol

goochtit
Nov 2, 2021



neutral milf hotel posted:

Weatherdammerung 2022: standard deviation not enough for pervert forecaster
:perfect:

endlessmonotony
Nov 4, 2009

by Fritz the Horse

Notorious R.I.M. posted:

You understand close to nothing about how weather modeling works though

I understand it fine, and Perry Mason Jar is proof I'm communicating my point too, but in a hilariously inefficient way. Well, hilarious to me anyway.

I know, I know, I'm fundamentally also an idiot mathfucker, and this is just me ranting about the interface problem between the math and how it's used.

spacemang_spliff
Nov 29, 2014

wide pickle

neutral milf hotel posted:

new thread title:

Weatherdammerung 2022: told you so

or

Weatherdammerung 2022: standard deviation not enough for pervert forecaster

pretty easy choice here IMO

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Raine
Apr 30, 2013

ACCELERATIONIST SUPERDOOMER



starting to doubt these "meteorologists"

i've yet to see a single meteor in any of these forcasts

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