Philip Stott

UK Professor Emeritus of Biogeography Philip Stott of the University of London
List cites this EPW blog post

He also has a blog

Arguments Condensed

• climate's changed before
• We know very little about climate
• It hasn't warmed since 1998 (although specifically he says "since at least 2001")

Quote

• "But, finally, we must return to basic science. Climate is the most complex, coupled, non-linear, semi-chaotic system known. The claim by UK MPs that they can manage climate predictably is the ultimate folie de grandeur. In such a system, both doing something (i.e., emitting gases) and not doing something (i.e., not emitting gases) at the margins are equally unpredictable as to outcomes." [ref]
• "Interestingly, the world average surface temperature has now exhibited no ‘global warming’ since at least 2001" [ref]

Notes:

• He argues mainly from politics, only occasionally wading into trying to justify his claims scientifically

Bob Breck

Chief Meteorologist Bob Breck of WVUE-TV

No link for this one, the list cites a letter to the list creators.
But I found a blogspot blog (join the family) of his:
http://bobbreck.blogspot.com/

Seems to contain more arguments than the letter, so most of the below are from the blog:

Arguments condensed

• Ice age predicted in the 70s
• It's the sun
• It's ocean cycles
• It hasn't warmed since 1998
• Dr James Hansen predicted cooling in the 70s
• They're in it for the money
• CO2 concentration is small (from http://bobbreck.blogspot.com/2008/12/fronts-keep-coming.html)
• Water vapor is the most powerful greenhouse gas

There's probably more..

Dr. Wilson Flood

Dr. Wilson Flood, of the Royal Society of Chemistry and a chemistry education
consultant

Cites this article and this one

Arguments Condensed:

• It hasn't warmed since 1998
• co2 won't double by 2100
• climate sensitivity is 0.18K/wm-2 (roughly calculated by dividing 33C by 150wm-2...I suspect the last figure is calculated by surface radiation minus outgoing radiation)

Quotes:

"Of all the scientific disciplines, chemistry equips us best to grasp the essentials of the global warming debate"

Allan M.R. MacRae

Professional Engineer Allan M.R. MacRae of Alberta, Canada, authored a scientific
analysis critical of man-made global warming in 2008.

Cites this article and this article

Arguments Condensed:

• It hasn't warmed since 1998
• rate of co2 rise correlates with temperature on annual timescales, therefore co2 doesn't cause warming

Quotes:

"Since ~1945 when CO2 emissions accelerated, Earth experienced ~22 years of warming, and ~40 years of either cooling or absence of warming"

"In fact, strong evidence exists that disproves the IPCC's scientific position. The attached Excel spreadsheet ("CO2 vs T") shows that variations in atmospheric CO2 concentration lag (occur after) variations in Earth's Surface Temperature by ~9 months (Figures 2, 3 and 4). "

Bill Steffen

Meteorologist Bill Steffen of Grand Rapids, Michigan
List cites his blog:
this entry
and another that no longer exists

Arguments Condensed:

• It hasn't warmed since 1998
• co2 is not the only factor. Volcanic eruptions effect climate.

Notes:

• There's a UAH graph on the page, yet still the 1998 argument gets made

Joseph Conklin

Meteorologist Joseph Conklin launched a skeptical website called Climatepolice.com

list cites:
http://climatepolice.wordpress.com/2007/08/10/global-warming-movement-falling-apart/

Arguments condensed

• 1930s hottest decade on record
• Urban heat island effect and microsite biases
• It hasn't warmed since 1998
• predicts global cooling

Notes

"This conclusion agrees with a previous study suggesting that no new warming has occurred (Lindzen, 2006) since 1998. It also agrees with a report (Gray, 2006) predicting that global temperatures will begin decreasing." link