Dr. Spencer is an internationally recognized climatologist who explains things like why we do not know whether man is causing any climate change or not.
Or, is the planet really warming all over?
Roy Spencer, PhD. Climate Change Research Scientist, Author, Former NASA Scientist
In Defense of the Term “Greenouse Effect”
by Roy W. Spencer, Ph. D. on 2018-05-09 at 14:03
Over the years I have gone along with the crowd and derided the term “greenhouse effect” as a poor analogy between the atmosphere’s ability to keep the Earth’s surfce warmer than it would be without IR-absorbing (and thus IR-emitting) gases, versus a greenhouse in which plants are grown. But the more I think about it, […]
UAH Global Temperature Update for April, 2018: +0.21 deg. C.
by Roy W. Spencer, Ph. D. on 2018-05-01 at 14:29
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 USA48 ARCTIC AUST 2017 01 +0.33 […]
New Lewis & Curry Study Concludes Climate Sensitivity is Low
by Roy W. Spencer, Ph. D. on 2018-04-24 at 15:01
Global warming “problem” cut by 50% As readers here are aware, I don’t usually critique published climate papers unless they are especially important to the climate debate. Too many papers are either not that important, or not that convincing to me. The holy grail of the climate debate is equilibrium climate sensitivity (ECS): just how […]
The 100th Meridian Agricultural Scare: Another Example of Media Hype Exceeding Reality
by Roy W. Spencer, Ph. D. on 2018-04-18 at 15:52
A new paper published in the AMS Earth Interactions entitled, Whither the 100th Meridian? The Once and Future Physical and Human Geography of America’s Arid-Humid Divide, Part II: The Meridian Moves East, discusses the climate model-expected drying of the western U.S. and how this will affect the agricultural central- and east- U.S. as the climatological […]
Midwest’s April chill most unusual on Earth
by Roy W. Spencer, Ph. D. on 2018-04-16 at 14:20
If you thought the cold April weather in the U.S. was exceptional, you are correct. In terms of temperature departures from average so far this April, the U.S. Midwest, Northern Plains, and much of Canada have been the coldest on Earth (graphic courtesy of Weatherbell.com): The areas of green have averaged at least 6 deg. […]
Stormy April to give snow job to Midwest
by Roy W. Spencer, Ph. D. on 2018-04-12 at 15:10
Friday the 13th is not shaping up to be very lucky for some people, weather-wise. A strong springtime (or late winter?) storm currently moving across the northern and central Rockies will move east over the next several days with a wide variety of severe weather, including blizzard conditions to the north and severe thunderstorms to […]
DC Cherry Blossom Peak to be met with Peak Snow?
by Roy W. Spencer, Ph. D. on 2018-04-04 at 13:51
After continuing delays due to cold weather, the National Park Service’s daily update for the DC Tidal Basin cherry blosson predicts that the peak blossom time will finally be this weekend. But you might want to get out the snow shovel if you want to go see this annual event. The latest weather forecast models […]
UAH Global Temperature Update for March, 2018: +0.24 deg. C
by Roy W. Spencer, Ph. D. on 2018-04-02 at 14:01
The Version 6.0 global average lower tropospheric temperature (LT) anomaly for March, 2018 was +0.24 deg. C, up a little from the February value of +0.20 deg. C: Some regional LT departures from the 30-year (1981-2010) average for the last 15 months are: YEAR MO GLOBE NHEM. SHEM. TROPIC USA48 ARCTIC AUST 2017 01 +0.33 […]
Return to Sender? China is Country Most Likely to See Tiangong-1 Burn Up
by Roy W. Spencer, Ph. D. on 2018-04-01 at 19:15
As China’s Tiangong-1 Space Station now rapidly falls to meet its fiery demise in the next several hours, the Aerospace Corporation’s most recent estimate of the potential paths of reentry show that China has the greatest statistical chance of any country of seeing the spectacle, with the longest potential reentry orbit sections: Of course, the […]
U.S. chance of Tiangong-1 sighting now less than 2%
by Roy W. Spencer, Ph. D. on 2018-03-31 at 15:47
The latest Aerospace Corp. prediction of the reentry time for the Chinese Space Station Tiangong-1 is now 3:30 p.m. CDT (plus or minus 8 hours) on Sunday, April 1. As reentry approaches, the predictions will get better, and the potential paths of the satellite will be narrowing. The latest potential paths of reentry look like […]