…but the coolest summer nights have warmed by 5 deg. F. John Christy and I continue to examine U.S. air temperature trends, especially those in summer, and John has recently been looking at “heat wave” statistics. My interest is in determining how much the urban heat island (UHI) effect has impacted reported warming trends. Last […]| Roy Spencer, PhD.
Dixon says: | Roy Spencer, PhD.
The comment portal at the Federal Register is now open for comments relating to our DOE report. If you think we weren’t alarmist enough, post your comment and explain why. If you think we were too alarmist, post your comment and explain why. I believe the comment period is open for 30 days.| Roy Spencer, PhD.
Brian RL Catt says: | Roy Spencer, PhD.
…we are the “Red Team”; the “Blue Team” has had their say since the late 1980s.| www.drroyspencer.com
…we are the “Red Team”; the “Blue Team” has had their say since the late 1980s. PREFACE: What follows are my own opinions, not seen by my four co-authors of the Dept. of Energy report just released, entitled A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate. Starting sometime tomorrow, the […]| Roy Spencer, PhD.
…and for floods across the U.S. and the world, the “scientific consensus” agrees. The catastrophic flooding of July 4, 2025 in the Texas hill country has left at least 130 dead. Many news outlets (predictably) have invoked climate change as a contributing cause, for example CNN, NPR, ABC News, The Texas Tribune, et al. As […]| Roy Spencer, PhD.
A Note to Journalists: Please take few minutes to read some of this so that maybe you can skip asking me for an interview. Around 3 p.m. ET today, 29 July 2025, a Department of Energy report entitled “A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate” will be made available […]| Roy Spencer, PhD.
Big U.S. Climate Policy Changes To Be Announced Today| Roy Spencer, PhD.
Ken says: | Roy Spencer, PhD.
Most of you are probably not aware that my wife of 48 years, Doreen (“Reenie”) J. Spencer passed away two weeks ago today, on June 7. Reenie had suffered for many years from autoimmune and fatty liver disease, and her condition worsened in the last several months. By the time she agreed to go to the hospital, it was too late to do anything except keep her comfortable.| Roy Spencer, PhD.
It took the better part of two years to satisfy the reviewers, but finally our paper Urban Heat Island Effects in U.S. Summer Surface Temperature Data, 1895–2023 has been published in the AMS Journal of Applied Meteorology and Climatology.| www.drroyspencer.com
Bindidon says: | Roy Spencer, PhD.
It took the better part of two years to satisfy the reviewers, but finally our paper Urban Heat Island Effects in U.S. Summer Surface Temperature Data, 1895| Roy Spencer, PhD.
Dr. Spencer writes: “Again, this assumes CO2 is 100% to blame for the long-term warming trend,”| Roy Spencer, PhD.
Latest Global Average Tropospheric Temperatures| Roy Spencer, PhD.