Roy W. Spencer

Roy W. Spencer, Ph.D., is Principal Research Scientist in Climatology in the University of Alabama’s National Space Science & Technology Center. When he worked at NASA’s Marshall Space Flight Center, he and Dr. John Christy, who heads the NSSTC, jointly received NASA’s Exceptional Scientific Achievement Medal for their global temperature monitoring work with satellites. Dr. Spencer’s work with NASA continues as the U.S. Science Team leader for the Advanced Microwave Scanning Radiometer flying on NASA’s Aqua satellite. Dr. Spencer’s research has been entirely supported by U.S. government agencies: NASA, NOAA, and DOE. He has never been asked by any oil company to perform any kind of service. He is a Senior Fellow of The Cornwall Alliance for the Stewardship of Creation.

UAH v6.1 Global Temperature Update for February, 2025: +0.50 deg. C

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The Version 6.1 global average lower tropospheric temperature (LT) anomaly for February, 2025 was +0.50 deg. C departure from the 1991-2020 mean, up a little from the January, 2025 anomaly of +0.45 deg. C. The Version 6.1 global area-averaged linear temperature trend (January 1979 through February 2025) remains at +0.15 deg/ C/decade (+0.22 C/decade over […]

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NC Floods, CA Drought, and The Role of Randomness

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The recent devastating floods in western North Carolina were not unprecedented but were certainly rare. A recent masters thesis examining flood deposits in the banks of the French Broad River over the last 250-300 years found that a flood in 1769 produced water levels approximately as high as those reported in the recent flood from Hurricane Helene.

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Florida Major Hurricanes, 1900-2024: What Do the Statistics Show?

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Florida residents must feel like they have been taking a beating from major hurricanes in recent years, but what do the data show? The problem with human perception of such things is that the time scale of hurricane activity fluctuations is often longer than human experience. For example, a person born in the 1950s would

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UAH Global Temperature Update for September, 2024: +0.96 deg. C

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The Version 6 global average lower tropospheric temperature (LT) anomaly for September, 2024 was +0.96 deg. C departure from the 1991-2020 mean, up from the August, 2024 anomaly of +0.88 deg. C. The linear warming trend since January, 1979 remains at +0.16 C/decade (+0.14 C/decade over the global-averaged oceans, and +0.21 C/decade over global-averaged land).

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UAH Global Temperature Update for August, 2024: +0.88 deg. C

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The Version 6 global average lower tropospheric temperature (LT) anomaly for August, 2024 was +0.88 deg. C departure from the 1991-2020 mean, up slightly from the July, 2024 anomaly of +0.85 deg. C. Persistent global-averaged warmth was (unusually) contributed to this month by the Southern Hemisphere. Of the 27 regions we routinely monitor, 5 of

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Unnecessary Net Zero, Part II: A Demonstration with Global Carbon Project Data

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Some commenters on my previous blog post, Net Zero CO2 Emissions: A Damaging and Totally Unnecessary Goal, were dubious of my claim that nature will continue to remove CO2 from the atmosphere at about the same rate even if anthropogenic emissions decrease…or even if they were suddenly eliminated. Rather than appeal to the simple CO2 budget

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Net Zero CO2 Emissions: A Damaging and Totally Unnecessary Goal

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The goal of reaching “Net Zero” global anthropogenic emissions of carbon dioxide sounds overwhelmingly difficult. While humanity continues producing CO2 at increasing rates (with a temporary pause during COVID), how can we ever reach the point where these emissions start to fall, let alone reach zero by 2050 or 2060? What isn’t being discussed (as

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Spencer vs. Schmidt: My Response to RealClimate.org Criticisms

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EN: Dr. Roy Spencer serves thoughtfully on the Cornwall Alliance Board. What follows is a response to Gavin Schmidt’s blog post at RealClimate.org entitled Spencer’s Shenanigans in which he takes issue with my claims in Global Warming: Observations vs. Climate Models. As I read through his criticism, he seems to be trying too hard to refute my claims

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‘Demographic Warming’: Humans Increasingly Choose to Live Where It’s Warmer

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This is the second of a series of articles in which Cornwall Alliance board member and senior fellow Dr. Roy W. Spencer explains the importance of distinguishing urban heat island effect from global temperature increase and of recognizing that by choosing to live in warmer regions of the world and in cities rather than in

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