Some subscribers to Phys-L might be interested in a recent post
"Assessment of Climate Change: A Challenge for the University -
Response To Goodknight #3" [Hake (2013)]. The abstract reads:
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ABSTRACT: In response to my post "Assessment of Climate Change: A
Challenge for the University" [Hake (2013b) at
<http://yhoo.it/11KwHD9>, Math-Teach's Greg Goodknight at
<http://bit.ly/122D5Bg> wrote (paraphrasing): "It isn't looking good
for the IPCC <http://bit.ly/12yrEZx> vision. See the graphs by John
Christy at <http://bit.ly/11HkZ8Y> as advertised by Roy Spencer at
<http://bit.ly/1bHg0Ke>."
Q. What does the graph by *climate-change skeptic* John Christy
<http://bit.ly/ZSkZWh> (as advertised by *evolution-skeptic* Roy
Spencer <http://bit.ly/17OZQ4c>) - see also "Climate Scientists
Debunk Latest Bunk by Denier Roy Spencer" at <http://bit.ly/17P0OO4>
- showing the discrepancy between linear-trend *observations* and 73
CMIP-5 *models* <http://1.usa.gov/1bHlTac> for tropical
mid-troposphere temperature changes between 1979 and 2012 have to do
with the threat to life on Planet Earth posed by Anthropogenic Global
Warming (AGW)?
A. NOTHING WHATSOEVER!
In my post "Why Democrats in Congress Fail To Support Climate Change
Legislation #3" at <http://yhoo.it/11fWHTG>, I quoted climate
scientist Gavin Schmidt <http://bit.ly/11FkHmp> as follows: "You
could take the entire climate history that we have in the
instrumental record and you could find cooling trends every 10 years.
. . . . You pick the end points and you could find any particular
year as part of a cooling year. But actually, the whole thing has
been moving up."
Consistent with Schmidt's statement, see the zigzag plot of "Weather
station data" vs time 1960 - 2005 in Mann (2012, Fig. 2.3, p. 16) at
<http://amzn.to/12x4qTF>, showing a mean global temperature increase
of about 0.75 degree C over that time period. The caption states
(paraphrasing): "A comparison of three different simulations of
global warming through 2020 made by James Hansen in 1988. A curve
through the weather station observations closely matches Hansen's
curve B, based on the trajectory of an emissions scenario that most
closely matches actual greenhouse gas emissions over the preceding 20
years."
Curve B predicts a mean global temperature increase from 1960 of
about one degree C in 2020, posing a serious threat to life on Planet
Earth - see e.g., the Wikipedia entry on global warming at
<http://bit.ly/145Eg7J>.
I list 11 pro-AGW resources that might be considered by AGW skeptics.
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"A clash of doctrines is not a disaster - it is an opportunity."
- Alfred North Whitehead (1925)
REFERENCES [URLs shortened by <http://bit.ly/> and accessed on 24 June 2013.]
Hake, R.R. 2013. "Assessment of Climate Change: A Challenge for the
University - Response To Goodknight #3," online on the OPEN! Net-Gold
archives at <http://yhoo.it/14TTPQJ>. Post of 24 Jun 2013
16:27:15-0700to AERA-L and Net-Gold. The abstract and link to the
complete post are being distributed to various discussion lists and
are on my blog "Hake'sEdStuff" at <http://bit.ly/14rHyAQ>.
Whitehead, A.N. 1925. "Religion and Science," The Atlantic, August; online at
<http://bit.ly/142YOk6>.