monthly cet laki

Get Laki, Get Unlaki

Guest Post by Willis Eschenbach Well, we haven’t had a game of “Spot The Volcano” in a while, so I thought I’d take a look at what is likely the earliest volcanic eruption for which we have actual temperature records. This was the eruption of the Icelandic volcano Laki in June of 1783. It is claimed to…

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Dr. Trenberth Redux

Guest Post by Willis Eschenbach A couple days ago, I was given a copy of a most interesting interchange from 2011 between Dr. Kevin Trenberth and a layman asking him a question. The sender of the question recently passed it on to me. I’ve redacted the email addresses and the name of the person asking the question,…

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Guy Stewart Callendar

Guest Post by Willis Eschenbach I greatly enjoy reading old science. Back fifty years or more ago, they actually did real science, not the “my model says it must be true” kind of thing that we are treated to today. In that regard, I’ve been fortunate to stumble on one of the earliest papers on…

us cloud cover percentage

Splicing Clouds

Guest Post by Willis Eschenbach So once again, I have donned my Don Quijote armor and continued my quest for a ~11-year sunspot-related solar signal in some surface weather dataset. My plan for the quest has been simple. It is based on the fact that all of the phenomena commonly credited with affecting the temperature,…

botkin jamaica bay

Winning Slowly

I wanted to highlight an interesting article by Dr. Daniel Botkin. It seems that it helps to be a Professor Emeritus in order to be able to speak your mind freely. Among other things, Dr. Botkin says: Whatever is happening to Earth’s climate does not seem to be our fault. What he said … =================================== Climate Is Changing,…

ceres monthly variation in tsi

Changes in Total Solar Irradiance

Total solar irradiance, also called “TSI”,  is the total amount of energy coming from the sun at all frequencies. It is measured in watts per square metre (W/m2). Lots of folks claim that the small ~ 11-year variations in TSI are amplified by some unspecified mechanism, and thus these small changes in TSI make an…

noaa year to date global temperature

Is NOAA Wrong?

Guest Post by Willis Eschenbach On another post here on Watts Up With That, a commenter pointed out that NOAA says that September 2014 was the warmest September ever on record. The commenter asked, “Is NOAA  wrong?” Sadly, as near as I can tell the answer is “Quite possibly”. Here is the NOAA graphic in question, showing their…