Planet-Sized Experiments – we’ve already done the 2°C test

Guest Post by Willis Eschenbach People often say that we’re heading into the unknown with regards to CO2 and the planet. They say we can’t know, for example, what a 2°C warming will do because we can’t do the experiment. This is seen as important because for unknown reasons, people have battened on to “2°C”…

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Sunspots: Labitzke Meets Bonferroni

Guest Post by Willis Eschenbach In a previous thread here on WUWT, a commenter said that the sunspot-related variations in solar output were shown by Labitzke et al. to affect the stratospheric temperature over the North Pole, viz: Karin Labitzke cracked that nut. She was the first one to find a correlation between not one…

Sea Level and Effective N

Guest Post by Willis Eschenbach Over in the Tweeterverse, I said I wasn’t a denier, and I challenged folks to point out what they think I deny. Brandon R. Gates took up the challenge by claiming that I denied that sea level rise is accelerating. I replied: Brandon, IF such acceleration exists it is meaninglessly…

President Jefferson Meets Mount Tambora

Guest Post by Willis Eschenbach In the comments of my last post entitled “Spot The Volcano, 1815 Edition” someone mentioned that Thomas Jefferson had commented on what is often called the “Year Without A Summer”. This was the summer of the year 1816, one year after the eruption of Mt. Tambora in Indonesia, which occurred…

Spot The Volcano, 1815 Edition

Guest Post by Willis Eschenbach It’s been a while since I played “Spot The Volcano”. The premise of the game is that the decrease in temperatures from volcanic eruptions is nowhere near as large as people claim. So I ask people to see if they can identify when a volcano erupted based on the temperature…

Global Energy Balances … Except When It Doesn’t

Guest Post by Willis Eschenbach. I came across an interesting 2014 paper called “The energy balance over land and oceans: an assessment based on direct observations and CMIP5 climate models“. In it, they make a number of comparisons between observational data and 43 climate models regarding the large-scale energy flows of the planet. Here’s a typical…

A Small Margin Of Error

Guest Post by Willis Eschenbach I see that Zeke Hausfather and others are claiming that 2018 is the warmest year on record for the ocean down to a depth of 2,000 metres. Here’s Zeke’s claim: Figure 1. Change in ocean heat content, 1955 – 2018. Data available from Institute for Applied Physics (IAP).  When I…

Greenland Is Way Cool

Guest Post by Willis Eschenbach As a result of a tweet by Steve McIntyre, I was made aware of an interesting dataset. This is a look by Vinther et al. at the last ~12,000 years of temperatures on the Greenland ice cap. The dataset is available here. Figure 1 shows the full length of the data,…

Hansen’s 1988 Predictions Redux

Guest Post by Willis Eschenbach Over in the Tweeterverse, someone sent me the link to the revered climate scientist James Hansen’s 1988 Senate testimony and told me “Here’s what we were told 30 years ago by NASA scientist James Hansen. It has proven accurate.” I thought … huh? Can that be right? Here is a…

Where The Texas Winds Blow

Guest Post by Willis Eschenbach There’s a typically hyper, deceptive, and Pollyanna article in the Houston Chronicle with the headline “Texas has enough sun and wind to quit coal, Rice researchers say“. You gotta watch out for these folks, it’s the old bait and switch. Because sure enough, as they say, there’s more sun and…