In House testimony, Botkin dismantles the IPCC 2014 report

Policycritic writes: You need to read this, Anthony. He dismantles the IPCC 2014 report for Congress. Botkin’s bio: “Daniel B. Botkin, a world-renowned ecologist, is Professor (Emeritus), Department of Ecology,…

Oh say can you see modern sea level rise from a geological perspective?

Guest post by David Middleton Experts say the IPCC underestimated future sea level rise A new study surveys 90 sea level rise experts, who say sea level rise this century…

Statistical Analyses of Surface Temperatures in the IPCC Fifth Assessment Report

Guest essay by Douglas J. Keenan Temperatures on Earth’s surface—i.e. where people live—are widely believed to provide evidence for global warming.  Demonstrating that those temperatures actually provide evidence, though, requires…

Thom Hartmann's 'Last Hours' video negated by IPCC AR5

From The End is Near department comes this video documentary from lefty talk radio guy Thom Hartmann that claims we are on the verge of a “mass extinction” due to…

Tail wagging the dog – IPCC to rework AR5 to be 'consistent with the SPM'

Dave Burton writes: Anthony, The IPCC replied promptly to my inquiry (below), and they surprised me, twice: 1. They say that the just released “final” draft of the AR5 WG1…

Animated analysis shows that IPCC AR5 global warming prediction is lower than AR4, TAR, and FAR

Guest Post by Ira Glickstein I just updated my December 2012 IPCC “Arrows” animation based on the latest available IPCC AR5 (2013) Global Warming prediction for 2035. One good result…

No Matter How the CMIP5 (IPCC AR5) Models Are Presented They Still Look Bad

UPDATE: I’ve added a comment to the end of the post about the use of 1990 as the start year. # # # After an initial look at how the…

McIntyre on IPCC's switching the pea under the thimble

Fixing the Facts – By Steve McIntyre Figure 1.4 of the Second Order Draft clearly showed the discrepancy between models and observations, though IPCC’s covering text reported otherwise. I discussed…

The WUWT Hotsheet for Monday Sept 30th, 2013

(Personal note – apologies for the light posting today, I’m overwhelmed with work, and exhausted from overwork – Anthony) The IPCC AR5 falls flat  Dr. Judith Curry has been making…

IPCC AR5 full final report released – full access here

From the IPCC website: Final Draft Note The Final Draft Report, dated 7 June 2013, of the Working Group I contribution to the IPCC Fifth Assessment Report Climate Change 2013:…

Almost Friday Funny – 5 answers from the IPCC on AR5

Josh writes: We are all very excited about the IPCC Summary for Policymakers coming tomorrow, Friday 27th September, but today we can reveal an exclusive pre-press conference handy crib sheet…

Dodgy statistics and IPCC Assessment Reports

Guest essay by Christopher Monckton of Brenchley In the 19th century, British Prime Ministers used to say there were “lies, damned lies, and statistics”. In the 21st century, we may…

Excerpts from the leaked AR5 Summary for Policy Makers

I’ve been given a copy of the “leaked” AR5 SPM, which has been widely circulated and cited in advance in the MSM, but I’ve just now been able to get…

A low-sensitivity climate model that outperforms the Met Office's HADGEM2

Climate sensitivity is IMHO, the most important unresolved issue in climate science. A number of recent papers, including the IPCC AR5 leak, plus the recent Economist leak of a later…

Weekly Climate and Energy News Roundup

The Week That Was: 2013-06-01 (June 1, 2013) Brought to You by SEPP (www.SEPP.org) The Science and Environmental Policy Project ################################################### Quote of the Week:. The great tragedy of Science…

Another Model Fail – (correction added)

CMIP5 (IPCC AR5) Climate Models: Modeled Relationship between Marine Air Temperature and Sea Surface Temperature Is Wrong Guest post by Bob Tisdale UPDATE 2 (February 27, 2013): A problem was discovered…

An animated analysis of the IPCC AR5 graph shows 'IPCC analysis methodology and computer models are seriously flawed'

This post made me think of this poem, The Arrow and the Song. The arrows are the forecasts, and the song is the IPCC report – Anthony I shot an arrow…

Why doesn't the AR5 SOD's climate sensitivity range reflect its new aerosol estimates?

This article is a detailed complement to Matt Ridley’s Op-Ed today in the Wall Street Journal: Cooling Down the Fears of Climate Change Evidence points to a further rise of…

Dr. David Whitehouse on the AR5 figure 1.4

Dr. David Whitehouse of the GWPF expounds on the “prime statistic of global warming” graph and its failure, as first reported here. The Leaked AR5 Report And Global Temperature Whatever…

IPCC statement on AR5 draft leak–full text

From: http://www.ipcc.ch/pdf/ar5/statement/Statement_WGI_AR5_SOD.pdf 2012/15/ST IPCC STATEMENT 14 December 2012 Unauthorized posting of the draft of the Working Group I contribution to the IPCC’s Fifth Assessment Report GENEVA, 14 December – The…

Shocker – Ken Caldeira resigns as IPCC AR5 lead author

(via Tom Nelson) Ken Caldeira resigns as IPCC lead author, saying: “…it is not clear how much additional benefit there is to having a huge bureaucratic scientific review effort under…

The IPCC gives me a shock

Yesterday I did something that I never expected to get any results on. My lucky number 1029 paid off.

Register to become an expert reviewer for IPCC WG1

Here’s an opportunity for input in the next IPCC report. I encourage all readers with relevant expertise to register. See link below. Working Group I (WGI) of the Intergovernmental Panel…