Aces High Bulletin Board

General Forums => The O' Club => Topic started by: Angus on May 20, 2011, 06:32:28 AM

Title: yet another global warming thread.
Post by: Angus on May 20, 2011, 06:32:28 AM

Just stumbled on this one. Somewhat staggering. Looks like that the northern Iecap will be having a baldie in some....5 years
(http://vulkan.blog.is/users/b9/vulkan/img/hafis.jpg)

Title: Re: yet another global warming thread.
Post by: F22RaptorDude on May 20, 2011, 06:41:00 AM

Basically, were all going to die  :D

Title: Re: yet another global warming thread.
Post by: bozon on May 20, 2011, 06:59:32 AM

What is the frequency of this sine wave?
Seriously, I hope that they have some physics behind this extrapolation because extrapolating based on a polynomial fitting with no physical model behind it is the worst kind of science. It is easy to prove that to any given set of data I can find a polynomial that will fit all the data and predict an ice sheet heavier than the mass of the sun by 2020.

Title: Re: yet another global warming thread.
Post by: Penguin on May 20, 2011, 07:00:26 AM

Wow, math is powerful.

-Penguin

Title: Re: yet another global warming thread.
Post by: Yossarian on May 20, 2011, 08:27:40 AM

This whole global warming debate is completely screwed.

Title: Re: yet another global warming thread.
Post by: Angus on May 20, 2011, 09:05:43 AM

Math or no math, these are just monthly measures over a certain period.
Extrapolating as they go will lead you to nil. in about 2016

Title: Re: yet another global warming thread.
Post by: Cheese on May 20, 2011, 09:34:51 AM

What about before 1979? 

Title: Re: yet another global warming thread.
Post by: Shuffler on May 20, 2011, 09:43:46 AM

Mother Nature

Title: Re: yet another global warming thread.
Post by: Yossarian on May 20, 2011, 09:47:52 AM

Quote from: Cheese on May 20, 2011, 09:34:51 AM

What about before 1979?  

Haven't pulled up any figures, but searching for "ice cap area over 100 years" gave me this as the first result:

http://en.wikipedia.org/wiki/Retreat_of_glaciers_since_1850 (http://en.wikipedia.org/wiki/Retreat_of_glaciers_since_1850)


And as with any set of data, I'd be interested to know:
-what are the units of the y-axis
-what is the data on the y-axis representing (I guess it's area of ice, but I don't know)
-where/how was it obtained
-is it the entire set of data
-where are the measurements from
-were any of the data defined as outliers and removed

...and so on.

Until these things are known, that chart is essentially meaningless.

Title: Re: yet another global warming thread.
Post by: Lepape2 on May 20, 2011, 09:49:38 AM

Quote from: Yossarian on May 20, 2011, 09:47:52 AM

Haven't pulled up any figures, but searching for "ice cap area over 100 years" gave me this as the first result:

http://en.wikipedia.org/wiki/Retreat_of_glaciers_since_1850 (http://en.wikipedia.org/wiki/Retreat_of_glaciers_since_1850)


And as with any set of data, I'd be interested to know:
-what are the units of the y-axis
-what is the data on the y-axis representing (I guess it's area of ice, but I don't know)
-where/how was it obtained
-is it the entire set of data
-where are the measurements from
-were any of the data defined as outliers and removed

...and so on.

Until these things are known, that chart is essentially meaningless.

This is exactly what I was about to ask so...

+1