RADIOCARBON CONCENTRATION IN URBAN AREA
作者： Anna Pazdur , Tadeusz Kuc , Andrzej Z. Rakowski , Toshio Nakamura
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摘要: Radiocarbon concentration has decreased in recent years due to the exchange of 14 CO 2 between atmosphere and oceans, but also 12 emission from burning fossil fuels. This second phenomenon known as Suess effect can be observed highly industrialized and/or urban areas. New data radiocarbon tree rings Nagoya (Central Japan) KrakUw (Poland), which covered last 20 years, were obtained recently. These used find relationship concentra- tions biosphere. Additionally, atmo- spheric CO2 compared with those derived annual rings, calcu- late time uptake for pine trees this region. show that iurban airi is systematically lower than iclean airi. Data fitted by exponential linear functions calculate predict future level. Using carbon dioxide Schauinsland component Cf level was calculated KrakUw. K
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