Why aren't Mexico's overwintering monarchs in the news yet this winter?

[Neil Jones]

In message <3C6C84CB.D9D at saber.net> Paul Cherubini writes:
> Neil Jones wrote:
> 
> > Your analysis is flawed. You are not comparing like with like. False colour
> > photographs taken from satelites can, despite the precautions taken in this
> > case, fail to distingush trees from other vegetation.  Thining of the trees will
> > not always show on a photograph taken from high above the earth outside
> > the visible spectrum because of the resolving power of the lens.
> 
> Neil, the white arrows in the 1973 infared photo 
> http://www.saber.net/~monarch/arrows.JPG show clearings in the fir forest
> (tan spots) that existed in 1973 and they also show up in the 2000 infared photo.
> 
> The problem is that in Brower's 1971 animation 
> http://www.saber.net/~monarch/arrows.JPG several of these clearings 
> are given green or yellow ratings when they should have been given grey ratings.
> In other words, the 1971 animation mistakenly depicts some cleared areas as
> forested areas.

Simply repeating the same conclusions based on comparing incompatible datasets
does not make your argument valid. It is made pretty clear on the website you
got these data from that the resolution is not sufficient for you to make these 
comparisons.
 

-- 
Neil Jones- Neil at nwjones.demon.co.uk http://www.nwjones.demon.co.uk/
"At some point I had to stand up and be counted. Who speaks for the
butterflies?" Andrew Lees - The quotation on his memorial at Crymlyn Bog
National Nature Reserve

 
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