Air Pollution Foundation First technical progress report

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The possible consequences of a changing concentration of the CO2 in the atmosphere with reference to climate, rates of photosynthesis, and rates of equilibration with carbonate of the oceans may ultimately prove of considerable significance to civilization. Future Plans: It is planned to obtain samples of CO2 as well as other carbon-bearing compounds and analyze them in the mass spectrometer. By the analysis of about one thousand samples definite information might be obtained on the feasibility of the following applications for this technique: Status: A research grant was made to Caltech by the Air Pollution Foundation on December 1, 1954. One of the more interesting results obtained is a consistent increase of the C13 content in recent years. Since 1840, the carbon-isotope ratio (C12/C13) has increased in the trees so far investigated. This can be explained on the basis of a change in the carbon ratio in CO2 atmosphere resulting from the burning of the C12 enriched coal and petroleum.

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