Site: Roy Spencer

Slant: Sceptic

Active: yes


This is the website of Roy Spencer. Roy W. Spencer received his Ph.D. in meteorology at the University of Wisconsin-Madison in 1981. Before becoming a Principal Research Scientist at the University of Alabama in Huntsville in 2001, he was a Senior Scientist for Climate Studies at NASA’s Marshall Space Flight Center, where he and Dr. John Christy 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. He has provided congressional testimony several times on the subject of global warming.

Recent Articles

Roy Spencer: Sydney Heat and “Bomb” Snowstorm: Pimped Out for Climate Change

It’s been an eventful weather week in some portions of the globe. In fact, it is always an eventful weather week – somewhere. But what really drives the narrative is when weather extremes — which always have, and always will, occur — happen to hit major metropolitan areas. Many people are already aware of the

2018-01-07 14:22   Click to comment

Roy Spencer: Da Bomb

The rapidly intensifying non-tropical cyclone producing heavy snow and blizzard conditions over the mid-Atlantic and New England is meeting expectations, with localized snowfalls of over 6 inches already this morning. The latest NAM model forecast of additional snowfall after 7 a.m. this morning until tomorrow morning shows up to 12-18 inches of snow over portions

2018-01-04 14:49   Click to comment

Roy Spencer: UAH Global Temperature Update for December, 2017: +0.41 deg. C

2017 Third Warmest in the 39-Year Satellite Record Global Satellite Monitoring of Temperature Enters its 40th Year The Version 6.0 global average lower tropospheric temperature (LT) anomaly for December, 2017 was +0.41 deg. C, up a little from the November, 2017 value of +0.36 deg. C: The global, hemispheric, and tropical LT anomalies from the

2018-01-02 13:54   Click to comment

Roy Spencer: U.S. Average Temperature Plummets to 11 deg. F

This morning at 7 a.m. EST, the area average temperature across the contiguous 48 states was a frigid 11 deg. F. Here’s the high-resolution surface temperature analysis from NCEP, graphic courtesy of Weatherbell.com: Over 85% of the nation is below freezing, and nearly 1/3 is below 0 deg. F. The forecast is for cold air

2018-01-01 13:29   Click to comment

Roy Spencer: First Annual List of Banished Climate Change Terms

Lake Superior State University has just released their 43rd annual list of banished words and phrases. These are usually new terms that pop culture has invented which professors at LSSU find silly in some way. Since I attended that institution for two years, I consider myself to be grandfathered in to start my own banished

2017-12-31 15:33   Click to comment

Roy Spencer: Frigid Air Causing Star Wars “Lightsaber” Effect

The unusually frigid air over the central and eastern U.S. caused this relatively rare “lightsaber” display of light pillars in Lebanon, New Hampshire, on the night of December 27, 2017. The effect is caused when flat-plate ice crystals falling through cold air reflect light sources on the ground like tiny mirrors. The pillars themselves are

2017-12-29 22:10   Click to comment

Roy Spencer: Major East Coast Snowstorm for New Years Eve?

We meteorologists have been watching what looks to be a major snowstorm shaping up for the eastern U.S. in the last couple days of 2017. While it is still too early to tell just where the worst weather will be, it does look like frigid air coming down from Canada will be met by moist

2017-12-22 22:39   Click to comment

Roy Spencer: L.A. Wildfires Creating Spectacular Smoke Plume

The warm, dry Santa Ana winds which are fanning the flames of the wildfires in the L.A. area have pushed the smoke hundreds of miles offshore. Yesterday’s NASA MODIS imager on the Terra satellite captured the following image of the smoke being sheared into artistic shapes as it travels downwind. Click on the image for

2017-12-07 12:48   Click to comment

Roy Spencer: UAH Global Temperature Update for November 2017:+0.36 deg. C

The Version 6.0 global average lower tropospheric temperature (LT) anomaly for November, 2017 was +0.36 deg. C, down substantially from the October, 2017 value of +0.63 deg. C: (I am out of the office until Dec. 6, and cannot provide the plot of data until then.) The global, hemispheric, and tropical LT anomalies from the

2017-12-01 15:57   Click to comment

Roy Spencer: Mysterious Night Flashes Near Mt. Agung Volcano Observed from Satellite

Today I was watching the 10-minute imagery from the Japanese Himawari geostationary weather satellite for the next eruption of Mt. Agung in Bali, Indonesia, and in the last hour or so there have been some distinct flashes in the nighttime imagery, which you can access here. These only show up in the nighttime imagery. Here’s

2017-11-27 22:47   Click to comment

Roy Spencer: Trump Wrongly Blamed for Destroying Sea Ice Satellite

No, Our Ability to Monitor Sea Ice Has Not Ended Yesterday, The Guardian ran a story with the headlines: Donald Trump accused of obstructing satellite research into climate change Republican-controlled Congress ordered destruction of vital sea-ice probe But as NASA’s leader of the U.S. Science Team on one of the best satellite instruments developed for

2017-11-06 12:14   Click to comment

Roy Spencer: UAH Global Temperature Update for October 2017: +0.63 deg. C

The Version 6.0 global average lower tropospheric temperature (LT) anomaly for October, 2017 was +0.63 deg. C, up from the September, 2017 value of +0.54 deg. C (click for full size version): The global, hemispheric, and tropical LT anomalies from the 30-year (1981-2010) average for the last 22 months are: YEAR MO GLOBE NHEM. SHEM.

2017-11-02 12:58   Click to comment

Roy Spencer: UAH Global Temperature Update for September, 2017: +0.54 deg. C

The Version 6.0 global average lower tropospheric temperature (LT) anomaly for September, 2017 was +0.54 deg. C, up from the August, 2017 value of +0.41 deg. C (click for full size version): The global, hemispheric, and tropical LT anomalies from the 30-year (1981-2010) average for the last 21 months are: YEAR MO GLOBE NHEM. SHEM.

2017-10-02 13:49   Click to comment

Roy Spencer: The Monty Hall Problem: There Is No Correct Answer

A diversion from global warming topics. The simple little probability problem below has apparently been debated for many years. It came to prominence when Marilyn vos Savant answered a reader’s question about it. Her answer was believed to be wrong by some of the greatest statistical minds in the world, and eventually most of them

2017-10-01 12:57   Click to comment

Roy Spencer: The 11-Year Major Hurricane Drought: Much More Unusual than Two Cat 4 Strikes

Weather.com published an article noting that the two Cat 4 hurricane strikes this year (Harvey and Irma) is a new record. Here’s a nice graphic they used showing both storms at landfall. But the statistics of rare events (like hurricanes) are not very well behaved. Let’s look at this new record, and compared it to

2017-09-21 14:37   Click to comment

Roy Spencer: Cracks in the Empire’s Armor Appear

Yesterday brought widespread news coverage of a new “study” published in Nature Geoscience which concludes that global warming has not been progressing as fast as expected, and that climate models might be a “little bit” wrong. (That the “little bit” is a factor of 2 or 3 is a fine point upon which we won’t

2017-09-20 11:54   Click to comment

Roy Spencer: Inevitable Disaster: Why Hurricanes Can’t Be Blamed On Global Warming

Partly in response to the crazy claims of the usual global warming experts (Stevie Wonder, Beyoncé, Jennifer Lawrence, Mark Ruffalo, Bill Nye the Science Guy, Neil deGrasse Tyson, Pope Francis), I decided to write another Kindle e-book. This one is entitled, Inevitable Disaster: Why Hurricanes Can’t Be Blamed On Global Warming. In it I review

2017-09-18 23:45   Click to comment

Roy Spencer: UAH Global Temperature Update for August, 2017: +0.41 deg. C

The Version 6.0 global average lower tropospheric temperature (LT) anomaly for August, 2017 was +0.41 deg. C, up somewhat from the July, 2017 value of +0.29 deg. C (click for full size version): The global, hemispheric, and tropical LT anomalies from the 30-year (1981-2010) average for the last 20 months are: YEAR MO GLOBE NHEM.

2017-09-05 13:58   Click to comment

Roy Spencer: Houston Area Flooding Seen from Space

Today the skies cleared enough to see the huge amount of water flowing out of southeast Texas and Houston into the Gulf of Mexico. Here is a before-and-after animation which shows the change from July 28 versus today (August 31), taken from the MODIS imager on NASA’s Terra satellite. Click on the image to enlarge

2017-08-31 19:38   Click to comment

Roy Spencer: Texas Major Hurricane Intensity Not Related to Gulf Water Temperatures

As the Houston flood disaster is unfolding, there is considerable debate about whether Hurricane Harvey was influenced by “global warming”. While such an issue matters little to the people of Houston, it does matter for our future infrastructure planning and energy policy. Let’s review the two basic reasons why the Houston area is experiencing what

2017-08-29 18:01   Click to comment

Roy Spencer: Why Houston Flooding Isn’t a Sign of Climate Change

In the context of climate change, is what we are seeing in Houston a new level of disaster which is becoming more common? The flood disaster unfolding in Houston is certainly very unusual. But so are other natural weather disasters, which have always occurred and always will occur. (By the way, making naturally-occurring severe weather

2017-08-28 12:52   Click to comment

Roy Spencer: Hurricane Harvey: 1 Million Hiroshima Bombs per Day

Mother Nature routinely deals with huge amounts of energy. In the case of hurricanes, some of the solar energy stored in the upper ocean is rapidly removed by strong winds in the form of evaporated water vapor, which then feeds the hurricane as the vapor condenses into rain and the “latent heat of condensation” is

2017-08-25 19:01   Click to comment

Roy Spencer: Skeptic Beating Al Gore on Amazon

Al Gore’s new movie, An Inconvenient Sequel: Truth to Power, has been in theaters for about a month now, and has received rather tepid reviews. The Kindle e-book version of Gore’s movie, despite being very colorful, has been doing even worse and is currently running at #20,768 overall on Amazon, and is not ranked #1

2017-08-24 14:56   Click to comment

Roy Spencer: Space Station Crossed the Sun During Eclipse

Now that a day or so has passed since the total solar eclipse raced across the United States, we are beginning to see some of the better photos from professional photographers appear. I’ve gathered a handful of what I consider to be some of the best photos so far. I think the most unique photo

2017-08-23 13:17   Click to comment

Roy Spencer: Total Eclipse from Center Hill Lake, TN

My family and friends drove north from Huntsville, AL the 2-3 hours to get into the path of totality. The weather was better than usual. As we drove into Tennessee, scattered cumulus and towering cumulus clouds were forming. Our preferred destination was Hurricane Marina, 50 miles east of Nashville. This is a beautiful and rather

2017-08-22 12:01   Click to comment

Roy Spencer: An Inconvenient Deception: How Al Gore Distorts Climate Science and Energy Policy

Al Gore has provided a target-rich environment of deceptions in his new movie. After viewing Gore’s most recent movie, An Inconvenient Sequel: Truth to Power, and after reading the book version of the movie, I was more than a little astounded. The new movie and book are chock-full of bad science, bad policy, and factual

2017-08-19 13:37   Click to comment

Roy Spencer: UAH Global Temperature Update for July, 2017: +0.28 deg. C

The Version 6.0 global average lower tropospheric temperature (LT) anomaly for July, 2017 was +0.28 deg. C, up a little from the June, 2017 value of +0.21 deg. C (click for full size version): The global, hemispheric, and tropical LT anomalies from the 30-year (1981-2010) average for the last 19 months are: YEAR MO GLOBE

2017-08-01 13:37   Click to comment

Roy Spencer: 4,300 Days Since Last U.S. Major Hurricane Strike

Wednesday of this week will mark 4,300 days since the last major hurricane (Category 3 or stronger, 111-129 mph maximum sustained winds) made landfall in the U.S. That’s almost 12 years. The last major hurricane to make landfall in the U.S. was Wilma striking Florida on October 24, 2005, one of several strong hurricanes to

2017-07-31 12:39   Click to comment

Roy Spencer: Study: Sea Level Rise Revised Downward

If I had not looked past the headline of the press report on a new study, I would have just filed it under “It’s worse than we thought”. A new study in Nature reported on July 17 carried the following headlines: “Satellite snafu masked true sea-level rise for decades” “Revised tallies confirm that the rate

2017-07-21 13:53   Click to comment

Roy Spencer: Warming in the Tropics? Even the New RSS Satellite Dataset Says the Models are Wrong

From recent media reports (e.g. the WaPo’s Capital Weather Gang) you would think that the new RSS satellite dataset for the lower troposphere (LT) has resolved the discrepancy between climate models and observations. But the new LT dataset (Version 4, compared to Version 3.3) didn’t really change in the tropics. This can be seen in

2017-07-14 15:40   Click to comment


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