IPCC changed viewpoint on the MWP in 2001 – did this have effect on scientific results? Guest post by Frank Lansner Latest News (hidethedecline) A brief check indicates a “warm…
Category: Paleoclimatology
Yowzer! "sea ice extended to the equator 716.5 million years ago"
From Harvard University Science: Scientists find signs of ‘snowball Earth’ Research suggests global glaciation 716.5 million years ago Steve Bradt Harvard Staff Writer Geologists have found evidence that sea ice…
Paleo tagging past climate sensitivity
I find this paper (PDF) interesting, but it still does not address the temperature/CO2 800 year time lag seen in ice core records. h/t to Leif Svalgaard – Anthony Fossil…
New Paper in Science: Sea level 81,000 years ago was 1 meter higher while CO2 was lower
This Week in SCIENCE, Volume 327, Issue 5967, Food Security dated February 12 2010, is now available at: http://www.sciencemag.org/content/vol327/issue5967/twis.dtl Standing High (requires free registration to view) Excerpts: Abstract: Sea-Level Highstand…
USGS: Arctic sea too warm for sea ice 3 million years ago
This is a paleoclimatology finding, with current spin added. I guess they haven’t seen the latest on the NAO and AO. USGS Press Release: Arctic Could Face Warmer and Ice-Free…
Historical video perspective: our current "unprecedented" global warming in the context of scale
One of the favorite buzzwords of alarmists is “unprecedented” when talking about present day warming. Yah, the Earth’s never, ever, been hotter, the “hockey stick” proves it, it’s unprecedented, and…
Hockey stick observed in NOAA ice core data
At the Foresight Institute, J. Storrs Hall had some interesting graphs made from NOAA ice core data (Alley, R.B. 2000. The Younger Dryas cold interval as viewed from central Greenland.…
Improved dendroclimatology techniques may help end climatic speculation related to tree ring analysis
For all the hubub surrounding Dr. Michael Mann’s hockey stick, the MWP, and throwing out data past 1960 because it didn’t seem to calibrate against the instrumental record, here is…
Jo Nova finds the Medieval Warm Period
From Jo Nova a look at how the MWP looks when other data is used, not just a few trees in Yamal. These maps and graphs make it clear just…
Climategate grows to include other research institutions
UPDATED: By Douglas J. Keenan – special for WUWT Phil Jones tried to hush my paper. SUNY Albany won’t discuss the investigation my paper initiated. And QUB ignored my three…
Playing hide and seek behind the trees
Still Hiding the Decline by Steve McIntyre Even in their Nov 24, 2009 statement, the University of East Anglia failed to come clean about the amount of decline that was hidden.…
The Medieval Warm Period – a global phenomenon, unprecedented warming, or unprecedented data manipulation?
Guest post from Von Rudolf Kipp Originally in German here, with some portions translated to English using the Google translator below. [update–translation provided by poster EWCZ ~ ctm] Google translator…
Told ya so – more upside down data in Mann's latest paper
I mentioned yesterday in the press release thread: So here’s the question, the press release below mentions sediments. Place your bets now on whether the Tiljander sediment series remains inverted…
Mann has a new paper: he apparently discovers the Medieval Warm Period
Sorry no graphics, no abstract or paper (not published yet, due Friday the 27th, I hate it when they do this) the Penn State press release was rather spartan. So…
McIntyre: The deleted data from the "Hide the Decline" trick
By Steve McIntyre from his camirror.wordpress.com site. For the very first time, the Climategate Letters “archived” the deleted portion of the Briffa MXD reconstruction of “Hide the Decline” fame –…
Bombshell from Bristol: Is the airborne fraction of anthropogenic CO2 emissions increasing? – study says "no"
Controversial new climate change results University of Bristol Press release issued 9 November 2009 New data show that the balance between the airborne and the absorbed fraction of carbon dioxide…
New geologic evidence of past periods of oscillating, abrupt warming, and cooling
Guest post by Dr. Don J. Easterbrook, Emeritus Professor at Western Washington University Two hundred years ago, Charles Lyell coined the phrase “The present is the key to the past.”…
More "unprecedented" warming in the Antarctic
Via a Euerekalert press release Past climate of the northern Antarctic Peninsular informs global warming debate IMAGE: The American icebreaker RV/IB Nathanial B. Palmer is shown off the South Shetland…
Yamal treering proxy temperature reconstructions don't match local thermometer records
Circling Yamal 3 – facing the thermometers Guest post by Lucy Skywalker Let’s look closely and compare local thermometer records (GISS) with the Twelve Trees, upon whose treerings depend…
On the Vikings and Greenland
Discussions on the Viking settlements on Greenland are seen from time to time on WUWT, and its is often in the context of the Medieval Warm Period. While this article…
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