BUSTED: How @ed_hawkins turned simple linear temperature increase into an accelerating spiral hockeystick

From the “confirmation bias affects Top. Men.” department…a modern equivalent of “Mike’s Nature Trick”. WUWT readers have probably seen the various graphical depictions of temperature coming from Dr. Ed Hawkins, who in his climate-lab-book website has been publishing spirals, bars, and other depictions of rising temperatures. For example (click for animation): Hawkins is no garden-variety…

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Analysis of James Hansen’s 1988 Prediction of Global Temperatures for the Last 30 Years

Guest analysis by Clyde Spencer Introduction There have been articles on WUWT recently, here and here, commemorating the 30 years since James Hansen gave Senate committee testimony about his view of the human influence on climate. Some apologists for Hansen have, without more than subjectively comparing graphs, claimed that his prediction was extremely accurate. The…

GISS Global Land-Ocean Temperature Index Vs GHCN

Guest analysis by Mark Fife This is the state of the world’s surface temperatures according to NASA’s Goddard Institute for Space Studies from 1880 through 2017. It is indeed a very bleak picture. As I see it, this is showing an exponential rise in temperatures starting at the beginning of the 20th century. Of course,…

Global Temperature Update for April, 2018

by Roy W. Spencer, Ph. D. The Version 6.0 global average lower tropospheric temperature (LT) anomaly for April, 2018 was +0.21 deg. C, down a little from the March value of +0.24 deg. C: Some regional LT departures from the 30-year (1981-2010) average for the last 16 months are: YEAR MO GLOBE NHEM. SHEM. TROPIC…

A Look at the Shape of Temperature Change Over Time

Guest essay by Mark Fife There are many times, when dealing with the analysis of real world data, looking at the average alone really doesn’t provide a complete picture of what is happening. Such is my problem with describing what the data contained in the GHCN data represents. If you look at the typical NOAA,…

An interesting plot twist – call it an anomaly

We’ve covered this topic before, but it is always good to mention in again. Howard Goodall asks this on Twitter: “Ever wondered why climate scientists use anomalies instead of temperatures? 100 years of catastrophic warming in central England has the answer.” He provides a link to the Central England Temperature data at the Met Office…

UAH finds a warming error in satellite data, lowers "tropical hotspot" temperature trend, contradicts IPCC models

From the University of Alabama, Huntsville via email from Dr. John Christy. Weather Satellite Wanders Through Time, Space, Causing Stray Warming to Contaminate Data In the late 1990s, the NOAA-14 weather satellite went wandering through time and space, apparently changing the record of Earth’s climate as it went. Designed for an orbit synchronized with the…

Global Temperature Report: March 2018

Global climate trend since Nov. 16, 1978: +0.13 C per decade March temperatures (preliminary) Global composite temp.: +0.24 C (about 0.43 degrees Fahrenheit) above 30-year average for March. Northern Hemisphere: +0.39 C (about 0.70 degrees Fahrenheit) above 30-year average for March. Southern Hemisphere: +0.10 C (about 0.18 degrees Fahrenheit) above 30-year average for March. Tropics:…