The
dynamics of carbon dioxide in the atmosphere is analyzed and it is shown that
the Pinatubo eruption in 1991 had a noticeable effect on these dynamics. The
growth rate slowed down. Moreover, analyzing the year-on-year CO2 growth data,
we can see an an-thropogenic footprint, possibly due to the burning of fossil
fuels. On top of this anthropo-genic contribution is a natural contribution
that is of similar magnitude, and that closely follows the ocean surface
temperature (influenced by ENSO, El Niño Southern Oscilla-tion). This latter
fact is consistent with the hypothesis of the correlation of global
temper-atures and carbon-dioxide in the atmosphere being governed by Henry’s
Law, in which carbon dioxide variations are the result of, rather than the
cause of, temperature changes. This latter being the so-called “greenhouse
effect”, sometimes mentioned as responsible for (anthropogenic) climate
changes, and that cannot explain the observed phenomena described here. Similar
conclusions are drawn on monthly data of carbon dioxide and temperature as
well.
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