Schrijver: Historical CO₂ Levels in Periods of Global Greening
The increased atmospheric CO₂ level is widely recognized as a primary driver of global greening (a 30% increase in GPP since 1900). It raises the question whether such an increased CO₂ level is also a necessary condition for a large GPP. This paper evaluates whether CO₂ levels during historical periods of similar or more greenness…
Huijser: Global Warming and the “impossible” Radiation Imbalance
Any perturbation in the radiative balance at the top of the atmosphere (TOA) that induces a net energy flux into- or out of Earth’s thermal system will result in a surface temperature response Correspondence: until a new equilibrium is reached. According to the Anthropogenic Global Warming (AGW)hypothesis which attributes global warming solely to rising concentrations…
Grabyan: Global Atmospheric CO2 Lags Temperature by 150 yr between 1 and 1850 AD
This study investigates whether atmospheric CO₂ precedes or lags global temperature changes over the past 2000 yr, using both visual and statistical analyses. A parallel evaluation of Total Solar Irradiance (TSI) and temperature was conducted to assess the influence of solar forcing on climate variability. Temperature, CO₂, and TSI data were drawn from many well-established…
Harde and Schnell: The Negative Greenhouse Effect – Part II
For our studies of the greenhouse gas emission – different to a simpler experimental set-up with a horizontally positioned Styrofoam box described in Part I – here we use an arrangement consisting of a vertically placed cylinder with uniformly heated walls and an opening at the bottom, which is sealed by an infrared-transparent foil. Below…
Schnell and Harde: The Negative Greenhouse Effect – Part I
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 Styrofoam box, as described occasionally in the literature for such experiments. The gases are slightly…
Scafetta: Planetary Synchronization
The complex planetary synchronization structure of the solar system, which since Pythagoras of Samos (ca. 570–495 BC) is known as the music of the spheres, is briefly reviewed from the Renaissance up to contemporary research. Copernicus’ heliocentric model from 1543 suggested that the planets of our solar system form a kind of mutually ordered and…
