In two consecutive studies, the suitability of different experimental set-ups for detecting and measuring the emission of infrared-active gases is investigated, as this is of particular importance for understanding the atmospheric greenhouse effect. The first part presents a horizontally arranged…
Effect of Variable Choice on Reliability and Predictive Validity For a model to be useful for policy decisions, statistical fit is insufficient. Evidence that the model provides out-of-estimation-sample forecasts that are more accurate and reliable than those from plausible alternative…
The Intergovernmental Panel on Climate Change (IPCC) attributes observed climate variability primarily to anthropogenic CO₂ emissions. This conclusion relies heavily on adjusted datasets and outputs from global climate models (GCMs) within the Coupled Model Intercomparison Project (CMIP) framework. However, this…
A study published by the CO2 Coalition claims that the rise in atmospheric CO2 concentration is manmade. This claim is examined here and rejected. There are two fundamental shortcomings in the study: It is based on an inappropriate model, that…
This is a special issue of Science of Climate Change (SCC) which covers 5th Nordic Climate Conference held in Mӧlndal, Sweden, October 26 and 27, 2024. The conference with the main theme “Climate Science versus Politics” was arranged by the…
Recent global warming and climate change studies frequently assume that the rise in atmospheric CO2 is entirely due to human emissions. In particular, the assumption is based on a figure of CO2 concentration of 280 ppm at the end of…
We briefly review the dominant role of clouds in Earth’s climate. The earliest observational studies of heat transfer through Earth’s atmosphere, for example, those of John Leslie around 1800, showed that clouds have a large effect on radiative heat transfer…
Starting with a critical look at the IPCC science, from the excellent First Assessment Report in 1990 and downhill to the latest Sixth Assessment Report with its claim that we have had no natural climate change since the pre-industrial era,…
The temperature record from Uppsala in Sweden starts already in 1722. This is one of the world’s longest temperature series available. A great job has been made to adjust and homogenize this data to be consistent over time, measurement locations…
The scientific journal Science of Climate Change was initiated by the Climate Realists in Norway in the summer of 2020. The first issue appeared in August 2021 and the journal has now existed in 3 years and produced 11 issues.…
Denmark has set ambitious goals for CO₂-emission reductions and wishes to play the role of front-runner in the World. However, in reality the results are not so impressive and the transition is running into serious difficulties. Continue reading …
Civilizations flourished during the warm periods, such as the Bronze Age, the Roman era, and the medieval times, when weather conditions were relatively stable with more precipitation in the tropic and subtropical areas. Civilizations experienced decline or succumbed during the…
I gave a short introduction to the climate conference in Mölndal 26-27 October 2024. The theme of the conference was “Science and Politics” so I picked up a couple of basic philosophical words of wisdom for this occasion. The first…
Using a detailed atmospheric radiative transfer model, we derive macroscopic relationships of downwelling and outgoing longwave radiation which enable determining the partial derivatives thereof with respect to the explanatory variables that represent the greenhouse gases. We validate these macroscopic relationships…
The impact of certain factors on the changes in atmospheric carbon dioxide (CO₂) concentrations has yet to be elucidated. In particular, the impacts of sea surface temperature (SST) on the balance of CO₂ emissions and absorption in the atmosphere and…
Volume 4 consists of two regular issues, Vol. 4.1 and 4.2. An additional issue, Vol. 4.3, contains all presentations on the CLINTEL Climate Conference in Prague. Vol. 4.4 is planned for contributions of the Climate Conference 2024 in Mölndal, Sweden.…