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March 2015 Global Surface (Land+Ocean) and Lower Troposphere Temperature Anomaly & Model-Data Difference Update

Guest Post by Bob Tisdale This post provides an update of the data for the three primary suppliers of global land+ocean surface temperature data—GISS through March 2015 and HADCRUT4 and NCDC through February 2015—and of the two suppliers of satellite-based lower troposphere temperature data (RSS and UAH) through March 2015. INITIAL NOTES: For discussions of…

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The Vancouver Sun’s Video Interview with Freeman Dyson

Guest Post by Bob Tisdale The Vancouver Sun recently published a video interview with “Princeton University’s preeminent” theoretical physicist and mathematician Freeman Dyson, as part of their “Conversation that Matters” series hosted by Stuart McNish. (Correction: Freeman Dyson is a professor emeritus of the Institute for Advanced Study, which is not affiliated with Princeton University.…

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25 Years of Monitoring Global Temperatures from Satellites and an Interview with Christy and Spencer of UAH

Guest Post by Bob Tisdale It’s been 25 years since Spencer and Christy of the University of Alabama at Huntsvillle published their 1990 paper Precise Monitoring of Global Temperature Trends from Satellites.  The abstract reads (my boldface): Passive microwave radiometry from satellites provides more precise atmospheric temperature information than that obtained from the relatively sparse…