The United Nations’ Intergovernmental Panel on Climate Change (IPCC) published their latest assessment report (AR6) in 2021. In 2023, the Clintel Foundation published a report which criticizes AR6.
Search Results for: co2 lag temperature
Modeling HadCRUT5 with CO2 and without CO2
By Andy May I hate statistics, as many of you know. Some people think statistics and/or statistical models that meet standard statistical criteria are facts. The IPCC can be like…
Germany Mean Temperature Trend For The Month Of May Sees No Rise Since 1986
The 2023 May was therefore not entirely satisfactory – but in the long term neither May temperatures nor precipitation showed any worrying trends.
The Holocene CO2 Dilemma
Guest Post By Renee Hannon This post evaluates the relationship of global CO2 with regional temperature trends during the Holocene interglacial period. Ice core records show that CO2 is strongly…
Craig Idso on CO2 Benefits: A Summary
Atmospheric CO2 is not causing, nor will it ever cause, a direct threat to your health or cognitive performance
Low atmospheric CO2 levels before the rise of forested ecosystems
Ultimately, the composition of Earth’s atmosphere is governed by an interplay between biological and geological processes and how land plants and their root symbionts affect the physical and chemical weathering…
Urban Night Lighting Observations Demonstrate The Land Surface Temperature Dataset is ‘not fit for purpose’
Rural data numerically dominate the USA archive, while urban data massively dominate almost everywhere else.
CO2 is Innocent but Clouds are Guilty. New Science has Created a “Black Swan Event”**
The modelers of the 1990’s where on the right track – if clouds change the results would be as strong as the that expected from CO2. The IPCC should evaluate…
Uncertainty Of Measurement of Routine Temperatures–Part Three
Can one apply the Law of Large Numbers validly to data that are invented by people and that are not observations?
Are fossil-fuel CO2 emissions good or bad?
By Andy May This is the transcript, with minor edits to get it into blog post format, of my keynote speech to the Division of Professional Affairs, at the second…
Why the Sun, Not CO2, Heats the Oceans Revisiting the Debate: Does Greenhouse Back-radiation Warm the Oceans?
After analyzing the physics detailed in this video, I’m convinced it is solar energy that drives the observed ocean heating, and any infrared ocean heating is insignificant at best.
Explaining Mauna Loa CO2 Increases with Anthropogenic and Natural Influences
I’m mostly trying to show how difficult it is to determine cause-and-effect from the available statistical data analysis alone.
German Paper: “A Mild Additional Temperature Rise Of Around 1°K”… Drop Not Excluded By 2100!
The results point to only a moderately warming planet up to the year 2150.
Humanoids And CO2 Levels
Guest Post by Willis Eschenbach For the usual totally obscure reasons, I got to thinking about the increase in atmospheric CO2. I thought I’d compare it with population growth. Here’s…
Day/Night temperature spread fails to confirm IPCC prediction
“Through examination of over 65 years of data at Giles it can be demonstrated that, in the absence of any other identifiable temperature forcing, the influence of the Enhanced Greenhouse…
Nearly 140 Scientific Papers Detail The Minuscule Effect CO2 Has On Earth’s Temperature
As of 2016 this list had only 50 papers on it (as indicated by the web address). In less than 6 years the list has grown to 137 (as of…
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…
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…
Holocene Antarctic CO2 Variability or Lack Of
Guest Post by Renee Hannon Introduction This post examines CO2 ice core measurements from Antarctica during the Holocene Epoch. The key CO2 dataset for paleoclimate studies is the EPICA Dome…
Climate Sensitivity to CO2, what do we know? Part 1.
The first version of this post had an error in Figure 1. It has been fixed along with the associated text (7/5/2021). By Andy May The IPCC claims, in their…
Contribution Of Anthropogenic CO2 Emissions To Changes In Atmospheric Concentrations
There is no question that anthropogenic CO2 is being absorbed in the atmosphere. However, there is no obvious evidence to support the claim that it is totally responsible for the…
Simplified climate modelling. Part 1: The role of CO2 in paleoclimate
The interdependency between CO2 and Earth’s climate is clearly crystallized. Either direction in the temperature relationship – CO2 or temperature in the driver’s seat – is quantified by simple means.…
The temperature–CO2 climate connection: an epistemological reappraisal of ice-core messages
From History of Geo-and Space Sciences Hist. Geo Space. Sci., 12, 97–110, 2021https://doi.org/10.5194/hgss-12-97-2021© Author(s) 2021. This work is distributed underthe Creative Commons Attribution 4.0 License. The temperature–CO2 climate connection: an epistemological…
The CO2 Shift; Ice Age to Gas Age
Guest Post by Renee Hannon IntroductionThis post examines CO2 data collected from Antarctic ice cores and compares CO2 measurements in both ice age and gas age. The age of trapped…
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