A fiery past sheds new light on the future of global climate change

Many of today’s climate models rely on past levels of greenhouse gasses and aerosols to validate their predictions for the future. But there’s a problem: While pre-industrial levels of greenhouse…

Southern Weather Discovery

Handwriting recognition casts new light on climate change from NIWA on Vimeo. Be a volunteer! Check it out here. HT/Steven Mosher

Duke Neukom's Secret Sauce

Guest Post by Willis Eschenbach In my last post, I talked about the “secret sauce”, as I described it, in the Neukom et al. study “Inter-hemispheric temperature variability over the…

Neukom's Science By Proxy

Guest Post by Willis Eschenbach Over at Climate Audit, Steve McIntyre is engaged in the slow public defenestration of the latest multi-proxy extravapalooza, a gem of a paper yclept “Inter-hemispheric…

'Ozone hole' may be a warming factor due to wind shifts

First, a clarification; while the AGU calls it an “ozone hole”, it technically isn’t. As NASA says here, it really isn’t a “hole” in the true sense of the word,…

Pollution in Northern Hemisphere helped cause 1980s African drought

From the University of Washington: Decades of drought in central Africa reached their worst point in the 1980s, causing Lake Chad, a shallow lake used to water crops in neighboring…

Those who don't learn from Yamal, are condemned to repeat it – Marcott’s YAD061

You’d think academics in the upside down Mann climate proxy world would pay attention, and not repeat the same mistakes of the past. Apparently not. WUWT readers surely recall the…

Future shifts in rainfall

From UC Berkeley: Rising temperature difference between hemispheres could dramatically shift rainfall patterns in tropics By Robert Sanders, Media Relations  BERKELEY — One often ignored consequence of global climate change…

New study: Ocean-driven warming along the western Antarctic Peninsula needs to be considered as part of a natural centennial timescale cycle of climate variability

From Cardiff University: Tiny fossils hold answers to big questions on climate change Research explores 12,000 year fossil record The western Antarctic Peninsula is one of the fastest warming regions…

So much for the theory that AGW increases water vapor and positive feedback

I liked this part: According to the study an important issue remains as to why the poleward expansion is largest in autumn, and there is still uncertainty about the role…

New study finds that a Carrington class solar event could cause global cooling of more than 3C

A paper recently published in Atmospheric Chemistry and Physics finds that “a solar proton event, if it took place in the near future with an intensity similar to that ascribed…

May UAH Global Temperature – unchanged

UAH Global Temperature Update for May 2012: +0.29°C By Dr. Roy Spencer The global average lower tropospheric temperature anomaly for May 2012 (+0.29 °C) changed little from April (+0.30 °C),…

Natural Variability in the Widths of the Tropics

Guest Post by Willis Eschenbach In my previous post, “Does This Analysis Make My Tropics Look Big?“I discussed a paper called “Recent Northern Hemisphere tropical expansion primarily driven by black…

Does This Analysis Make My Tropics Look Big?

Guest Post by Willis Eschenbach There is a new paper in Nature magazine that claims that the tropics are expanding. This would be worrisome because it could push the dry…

Carbon soot may be driving the expansion of the tropics – not CO2

From the University of California – Riverside it seems that black carbon soot is driving tropical expansion. How could this be? I thought CO2 was all powerful, so powerful with…

UAH Global temperature, up in April

UAH Global Temperature Update for April 2012: +0.30°C By Dr. Roy Spencer The global average lower tropospheric temperature anomaly increased again in April, 2012, to +0.30°C., with warming in both…

Shakun The Last, I Hope

Guest Post by Willis Eschenbach In three previous posts here, here, and here, I discussed problems with the paper by Shakun et al., “Global warming preceded by increasing carbon dioxide…

The Earth has chills and fever, and spots, or something

WUWT Readers may remember in 2006 Al Gore announcing on national television one morning that: The earth has a fever… He of course was pushing his book, An Inconvenient Truth…

No global climate change in the past 20,000 years?

Guest post by Dr. Don J. Easterbrook Dept. of Geology, Western Washington University, Bellingham, WA In a paper entitled “Current global warming appears anomalous in relation to the climate of…

The Durban ramp-up begins – now the Earth only warms by hemispheres, and not simultaneously – until now

From Lund University, a new way to blame modern man.  Look for more nuttiness like this as the Durban climate conference approaches. Read the conclusion of the paper below, which…

Ozone hole "…caused a great deal of the climate change that's been observed"

Columbia engineering study links ozone hole to climate change all the way to the equator First time that ozone depletion is shown to impact the entire circulation of the southern…