180 YEARS OF ATMOSPHERIC CO2 GAS ANALYSIS
BY CHEMICAL METHODS
by
Ernst-Georg Beck3. CO2 MEASUREMENTS OF THE BACKGROUND BEFORE 1958This tropospheric CO2 concentration from about 5 km height is the CO2 background
postulated by Keeling and the IPCC as stable in nature and rising since industrial time
by burning of fossil fuels.
The Mauna Loa measurements initiated by Keeling show a rise of the background
since 1958 until today. In fact the CO2 concentration has been measured in the upper
troposphere since the end of the 19th century by dozens of balloon flights and after the
World War II by rockets. A literature research revealed [23] 63 single values since 1894
–1973, from which 18 yearly averages can be calculated for heights of 1 –50 Km
(stratosphere). The resulting graph is shown in figure 4. In most cases cryogen
condensation had been used to separate CO2 from air using absorption in alkaline
solution, by IR spectroscopy afterwards. A pronounced peak during the 30s of the 20th
century is noticeable. The modern CO2 concentration is therefore not unique for
thousands of years, as is stated repeatedly. This confirms the analysis by chemical
methods near ground since 1812, which also show a maximum during 1930–1945 [19].
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