Autocorrelation in CO2 and Temperature Time Series

By Andy May In my last post I plotted the NASA CO2 and the HadCRUT5 records from 1850 to 2020 and compared them. This was in response to a plot posted on twitter by Robert Rohde implying they correlated well. The two records appear to correlate because the resulting R2 is 0.87. The least square’sContinue reading “Autocorrelation in CO2 and Temperature Time Series”

CO2 and Temperature

By Andy May I had a very interesting online discussion about CO2 and temperature with Tinus Pulles, a retired Dutch environmental scientist. To read the whole discussion, go to the comments at the end of this post. He presented me with a graphic from Dr. Robert Rohde from twitter that you can find here. ItContinue reading “CO2 and Temperature”

Temperature Regulated Cooling Dominates Warming and Why the Earth Stopped Cooling At 15°C

Guest Post by Wim Röst Abstract It is said that the Earth’s surface temperature variations are controlled by [human-induced] greenhouse gases1. This is not the case. When cooling systems dominate, surface temperatures are set by the cooling system and not by the system that is warming the surface. On Earth the surface cooling system dominates;Continue reading “Temperature Regulated Cooling Dominates Warming and Why the Earth Stopped Cooling At 15°C”

Holocene CO2 Variability and Underlying Trends

Guest Post by Renee Hannon Introduction This post compares CO2 data from Antarctic ice cores during the Holocene interglacial period with other publicly available CO2 datasets. Antarctic ice CO2 is regarded as the gold standard for paleo-atmospheric global CO2 during past interglacial and glacial periods. Antarctic CO2 does capture the multi-millennial underlying trend; however, short-termContinue reading “Holocene CO2 Variability and Underlying Trends”

The Old Farmer’s Almanac Seasonal Forecasts

By Andy May The Old Farmer’s Almanac has been making yearly long-term weather forecasts for 230 years. We pay attention to them because they are normally 80% accurate. They did not do as well last winter but were 72% in predicting the direction of temperature change, and 78% accurate in the change in precipitation. ThisContinue reading “The Old Farmer’s Almanac Seasonal Forecasts”

The Greenhouse Effect, A Summary of Wijngaarden and Happer

By Andy May This post was updated 9/24/2021 to reflect reader comments. The phrase “greenhouse effect,” often abbreviated as “GHE,” is very ambiguous. It applies to Earth’s surface temperature, and has never been observed or measured, only modeled. To make matters worse, it has numerous possible components, and the relative contributions of the possible componentsContinue reading “The Greenhouse Effect, A Summary of Wijngaarden and Happer”

European Energy Prices set Records

By Andy May According to the Wall Street Journal yesterday, due to a rare lack of North Sea wind, already high European energy prices are climbing higher. “Gas and coal-fired electricity plants were called in to make up the shortfall from wind. Natural-gas prices, already boosted by the pandemic recovery and a lack of fuelContinue reading “European Energy Prices set Records”

False and misleading “fact check” about Connolly, et al., 2021

By Andy May Dr. Ronan Connolly and his co-authors respond to obvious false claims, in a supposed “fact check” about their latest paper on how solar variability may be affecting the climate. We applaud Dr. Ronan Connolly, Dr. Willie Soon, and Dr. Michael Connolly for rapidly and publicly calling out this fraudulent fact check. MisinformationContinue reading “False and misleading “fact check” about Connolly, et al., 2021”

Nature promotes frivolous lawsuits

By Andy May A Dutch joke*: “The Judge asks an attorney pleading his case: ‘Am I ever to hear the truth?’ The attorney responds: ‘No, my Lord, only the evidence.’” It is safe to say that no evidence exists that man-made climate change has harmed anyone. Further man-made climate or climate change has never beenContinue reading “Nature promotes frivolous lawsuits”

The Paleocene-Eocene Thermal Maximum or PETM

By Andy May The PETM or Paleocene-Eocene Thermal Maximum was a warm period that began between 56.3 and 55.9 Ma (million years ago). The IPCC AR6 report (actually a draft, not a final edited report), released to the public on August 9, 2021, suggests that this warm period is similar to what is happening todayContinue reading “The Paleocene-Eocene Thermal Maximum or PETM”

%d bloggers like this: