Wednesday, 18 July 2012

Global warming over past century was half of IPCC claims

HockeySchtick reports on a new paper presented at the European Geosciences Union meeting. The paper finds:
......global warming over the past century was only about one-half [0.42°C] of that claimed by the IPCC [0.7-0.8°C]. The paper finds that in 2/3 (67%) of the weather stations examined, questionable adjustments were made to raw data that resulted in "increased positive trends, decreased negative trends, or changed negative trends to positive," whereas "the expected proportions would be 1/2 (50%)."

nvestigation of methods for hydroclimatic data homogenization


Steirou, E., and D. Koutsoyiannis, Investigation of methods for hydroclimatic data homogenizationEuropean Geosciences Union General Assembly 2012, Geophysical Research Abstracts, Vol. 14, Vienna, 956-1, European Geosciences Union, 2012.
Read More at Hockeyschtick.

IPCC Past reports were JUNK

From American Thinker:
Image: Jo Nova

IPCC Admits Its Past Reports Were Junk

By Joseph L. Bast

The IPCC is the world's most prominent source of alarmist predictions and claims about man-made global warming.

If the IPCC's reports were flawed, as a many global warming "skeptics" have long claimed, then the scientific footing of the man-made global warming movement -- the environmental movement's "mother of all environmental scares" -- is undermined. 
The IAC reported that IPCC lead authors fail to give "due consideration ... to properly documented alternative views" (p. 20), fail to "provide detailed written responses to the most significant review issues identified by the Review Editors" (p. 21), and are not "consider[ing] review comments carefully and document[ing] their responses" (p. 22).  In plain English: the IPCC reports are not peer-reviewed.

Six Decades of Warming not unusual, unnatural or unprecedented

Image: Scientific American
From CO2 Science:

The authors write that "the Andean snowpack is the main source of freshwater and arguably the single most important natural resource for the populated, semi-arid regions of central Chile and central-western Argentina," as it "provides most of the water needed for human consumption, agriculture, industries, hydroelectric generation and aquifer recharge." And, hence, the world's climate alarmists are wont to agonize over what global warming might do to this precious natural resource.

A paper published in the Journal of Geophysical Research shows that "Contrary to the worries of climate alarmists, it would appear that there is nothing unusual, unnatural or unprecedented about the highs and lows of the Andean snowpack over the last six decades of global warming."

Citation: Masiokas, M. H., R. Villalba, D. A. Christie, E. Betman, B. H. Luckman, C. Le Quesne, M. R. Prieto, and S. Mauget (2012), Snowpack variations since AD 1150 in the Andes of Chile and Argentina (30°–37°S) inferred from rainfall, tree-ring and documentary records, J. Geophys. Res., 117, D05112, doi:10.1029/2011JD016748. 

Read More at CO2 Science.