Re: [Phys-l] The Cause of Global Warming. What's the Proof the hypothesis' and models are right?

[Stefan Jeglinski <jeglin@4pi.com>]

> For those who are interested in how NASA researchers measure the 
> extent of sea ice in the polar regions, I suggest the following link:
>
> http://polynya.gsfc.nasa.gov/seaice_links.html


In particular, see

http://nsidc.org/data/docs/daac/nsidc0002_ssmi_seaice.gd.html

I think questions about models and simulations are quite relevant in 
light of this. The processing required to convert the microwave data 
to an "image" that one can see in the animations is immense, and has 
required a bit of massaging to correct errors that were discovered 
along the way. The analysis is quite candid regarding the sources of 
error. It is clear that a number of simplifications had to be made to 
get anywhere at all.

With respect to the assertion that the north polar ice cap (um, is 
that summer or winter?) is retreating at about 9% per decade, I'd 
love to see some error bars on that (still googling), in light of the 
assumptions that had to go into this stuff. See for example

http://en.wikipedia.org/wiki/Polar_ice_packs.

Or, beat me about the head with:

http://nsidc.org/news/press/20070430_StroeveGRL.html


Mine is not a criticism of the science per se. It's obviously a tough 
analysis, with the final images highly distanced from the raw data.


Stefan Jeglinski