For those worried about tundra melt and methane outgassing, this study might dampen those worries a bit. A new peer-reviewed study by Clegg et al. demonstrates that modern global warming…
Category: Paleoclimatology
Easterbrook on the magnitude of Greenland GISP2 ice core data
MAGNITUDE AND RATE OF CLIMATE CHANGES Guest post by Dr. Don J. Easterbrook, Dept. of Geology, Western Washington University The GISP2 Greenland ice core has proven to be a great…
New paper on forcings of historical European temperatures
From Nature Geoscience Influence of human and natural forcing on European seasonal temperatures Gabriele Hegerl, Juerg Luterbacher, Fidel González-Rouco, Simon F. B. Tett, Thomas Crowley & Elena Xoplaki Journal name:…
Ocean Acidification: Chicken Little of the Sea Strikes Again
Guest Post by David Middleton Introduction As global warming morphs into climate change and global climate disruption and anthropogenic CO2 emissions give way to stochastic variability, clouds, the Sun, cosmic rays and our…
On “Trap-Speed", ACC and the SNR
Guest post by William McClenney “Trap-Speed”: We will initiate this discussion by looking at some of the early, and then later, recognitions of some of climate change’s “best lap times”…
Antarctic Ice Cores: The Sample Rate Problem
Guest Post by David Middleton In my first guest post (CO2: Ice Cores vs. Plant Stomata), we discussed the merits of ice cores vs. plant stomata as paleo-CO2 measurements. One of…
2010 – where does it fit in the warmest year list?
Guest post by Dr. Don J. Easterbrook 1934 has long been considered the warmest year of the past century. A decade ago, the closest challenger appeared to be 1998, a…
CO2: Ice Cores vs. Plant Stomata
Guest post by David Middleton INTRODUCTION Anyone who has spent any amount of time reviewing climate science literature has probably seen variations of the following chart… A record of atmospheric…
Quote Of The Week – AGW statistical futility
Here’s a quote related to the McShane and Wyner discussion brought to light thanks to Gavin Schmidt and Michael Mann at RealClimate that I happen to agree with. Yes I…
McShane & Wyner Hockey Stick Smackdown – redux
WUWT readers may remember this popular article from August 30th, 2010 New paper makes a hockey sticky wicket of Mann et al 98/99/08 and then The Team’s response RC’s response to…
Is the warming in the 20th century extraordinary?
WUWT readers, Figure 4 is noteworthy, because it points out the trend of 20th century warming in context with other periods of warming derived from the ice core record. I…
Has Charles Dickens shaped our perception of climate change?
Note: This essay originally appeared last January on The Air Vent. Given our current winter, it as just as prescient now as it was then, so I’m reposting it here.…
California's giant redwoods inconveniently respond to increased carbon dioxide
In all of California, there is no greater shrine to nature than the giant redwoods of the Northern California. WUWT readers may remember this article which talks about the threat…
A regional approach to the medieval warm period and the little ice age
Nicola Scafetta sends this along, I found this figure quite interesting, but there are many more in the full PDF available below. A regional approach to the medieval warm…
Dr. Ray Bradley's amazing photo
Here is the web page for Dr. Raymond S. Bradley who is listed as: University Distinguished Professor in the Department of Geosciences and Director of the Climate System Research Center…
Comparing CO2 in warm and cold periods in geologic history
I recall a conversation I had with Dr. Bob Carter at a restaurant in Townsville, QLD after our public presentations there in June 2010 where he lamented the fact that…
Drought, Titicaca, Poopo, and Local Tipping Points
Press Release 10-216 Catastrophic Drought Looms for Capital City of Bolivia Historical ecology of the Andes indicates desert-like setting on the horizon Catastrophic drought is on the near-term horizon for…
"Extreme global warming" in the ancient past
Ancient global warming: but which came first, the temperature or the CO2? From the National Oceanography Centre, Southampton (UK) Variations in atmosphere carbon dioxide around 40 million years ago were…
Atlantic reversal
From Eurekalert: Earth’s climate change 20,000 years ago reversed the circulation of the Atlantic Ocean Global warming today could have similar effects on ocean currents and could accelerate climate change…
New peer reviewed paper says "there appear to have been periods of ice free summers in the central Arctic Ocean" in the early Holocene, about 10-11,000 years ago
We all know how much NSIDC’s Dr. Mark Serreze has been touting the idea of the “Arctic death spiral“, and we’ve had predictions of ice free summers in 2008, 2013,…
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