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Ocean chemistry, anthropogenic effects

In this book air chemistry is defined as a branch of atmospheric science dealing with the atmospheric part of the biogeochemical cycle of different constituents. In other words this means that we will deal mainly with the atmospheric pathways of those components that are involved in the mass flow between the atmosphere and biosphere, as well as in chemical interactions between the air and the other media of our environment (soils, oceans etc.). It follows from this definition that, on the one hand, our discussion will be restricted to the troposphere and the stratosphere4 and, on the other hand, the photochemistry of the upper layers, the subject matter of the aeronomy (e.g. Nicolet, 1964), will be omitted. This separation of the (photo) chemistry of the lower (troposphere and stratosphere) and upper atmosphere makes it possible to give a more compact treatment of our problem, including the global anthropogenic effects due to the increase of air pollution. [Pg.16]

The simplest path to this target is presumably indirect, but close at hand. The most effective and cost-free CO2 collector is Mother Nature herself, and she is also the most massive sink for carbon. A rough estimate of the terrestrial biomass production (not including the contributions of oceans) amounts to 120 Gt/year as dry matter, these are approximately 60 Gt bound carbon or 220 Gt sequestered CO2 per year [1, 2], The natural CO2 cycle is therefore still one order of magnitude larger than the anthropogenic one, except that nature has been in equilibrium for hundreds of millions of years. This perpetuated binding and liberation of CO2 can indeed serve as the role model for future chemistry. [Pg.126]


See other pages where Ocean chemistry, anthropogenic effects is mentioned: [Pg.233]    [Pg.238]    [Pg.774]    [Pg.62]    [Pg.19]    [Pg.21]    [Pg.236]    [Pg.56]    [Pg.604]    [Pg.10]    [Pg.12]    [Pg.41]    [Pg.453]    [Pg.4619]    [Pg.305]    [Pg.87]    [Pg.765]    [Pg.77]   


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