Sciencetalks2018-12-18T09:51:15+01:00

The real greenhouse effect

By André Bijkerk We start with the weather, but that helps us to understand how the real greenhouse effect works. I took this photo many years ago on a cold morning at the end of September, the beginning of autumn, the trees were still green. When asked if there is something strange going on here, I am still waiting for the right answer. No idea? [...]

By |2 Jun 2020|Atmosphere|12 Comments

The sun caused 1,1 °C of the warming since the 17th century

The sun explains 93% of seawater surface temperature variance up to and including 1980s; ozone layer depletion caused more solar radiation on Earth's surface in 1990s, resulting in a persistent spurious relation between CO2 & temperature; afterwards the sun caused further warming in 21st century May 17, 2020 - Author: Martijn van Mensvoort |  English version |  Nederlandse versie In 2020, KNMI researcher Geert Jan van Oldenborgh describes the strong [...]

By |20 May 2020|Geen categorie|99 Comments

The role of CO2 in our atmosphere

By Frans van den Beemt My own knowledge about the role of CO2 in the earth's atmosphere is based on fundamental physics. The following is a simplified explanation of the role of CO2 gas in the earth's atmosphere. The earth's atmosphere is quite complex. However, an explanation of the main issues is given below, which sheds some light on the role that CO2 plays. We [...]

By |13 Mar 2020|Geen categorie|Comments Off on The role of CO2 in our atmosphere

Impact of CO2 on climate overestimated (substantially) due to 66-year cycle & El Nino

Guest contribution by Martijn van Mensvoort Warming on top of a conceptual 66-year cycle with an amplitude of 0.12°C (see the oscillating sine wave) after removal of the ENSO cycle; the ENSO cycle is shown in the lower part of the illustration. The most important volcanic influences are also featured + the influence of the sunspot cycle is made visible as well inside the [...]

By |20 Sep 2019|Atmosphere|7 Comments

On CO2 and the global mean Earth’s surface temperature

Increase of global mean Earth’s surface temperature due to doubling of CO2 estimated to be marginal. Guest contribution by Frans van den Beemt Abstract The aim of this study is to get an order of magnitude value for the increase of the Earth surface temperature at doubling CO2 concentration from 300 ppm to 600 ppm (parts per million). Here an original method is worked out [...]

By |11 Jul 2019|Atmosphere|2 Comments
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