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Enhancing the Usability of Atmospheric Oxygen Measurements Through Emission Source Characterization and Airborne Measurements

Julia Steinbach

出版	MPI-BGC, 2010
URL	http://books.google.com.hk/books?id=xtEHaAEACAAJ&hl=&source=gbs_api

註釋

High-precision measurements of atmospheric oxygen play an increasingly important role in our understanding of the global carbon cycle and its feedbacks on the Earth & rsquo;s climate. In combination with CO2 measurements, they allow partitioning of global oceanic and terrestrial sinks of anthropogenic CO2. In addition, influences from biospheric processes and anthropogenic emissions on observed CO2 variations can be distinguished using simultaneously measured O2 mixing ratios, since these processes have different O2:CO2 ratios. Over the past decade, the global network of stations monitoring atmospheric O2 in addition to CO2 has been growing continuously and also become more representative due to the addition of continental stations. Data from these stations allow better constraining of fluxes from regional to continental scales, but due to the proximity of highly variable local (e.g. anthropogenic) sources and sinks additional effort is needed to interpret the measurements. ...