Anthropogenic impact

Ereyer, H. D. and Belacy, N. (1983). C/ C records in Northern Hemispheric trees during the past 500 years - anthropogenic impact and climatic superpositions, /. Geophys. Res. 88, 6844-6852. 

Roy S, Gaillardet J, Allegre CJ (1999) Geochemistry of dissolved and suspended loads of the Seine River, France anthropogenic impact, carbonate and silicate weathering. Geochim Cosmochim Acta 63 1277-1292... 

There is an urgent need to find feasible ways that would stop the ensuing depopulation in Ukraine, such ways to ensure survival that would work before die sustainable development concept has been implemented. In these times of a deep economic crisis, the economic and environment-related issues must be attacked simultaneously, in line with one strategy for a cleaner economy. This would be a change from a policy of anthropogenic impact assessment to that of at-source abatement of pollution. 

Van Dingenen, R., F. Raes, and N. R. Jensen, Evidence for Anthropogenic Impact on Number Concentration and Sulfate Content of Cloud-Processed Aerosol Particles over the North Atlantic, J. Geophys. Res., 100, 21057-21067 (1995). 

In anthropogenically impacted systems, Cotter-Howells Thornton (1991) used SEM-EDS to characterize soil grains from a Derbyshire, UK, mining village where Pb mining historically occurred. Many of the soil grains were chloro-pyromorphite. EXAFS was used to identify pyro-morphite in mine-waste-contaminated soils in follow-on studies (Cotter-Howells et al. 1994). 

Volcanic eruptions cause changes in RF from 0.2 Wm 2 to 0.5 W m 2 (these values, however, are very conditional). To analyze the possible anthropogenic impacts on global climate, estimates of the sensitivity of the climate system to external forcings are very important. Hansen et al. (1998) assumed that a change in global mean SAT with a doubled C02 concentration should constitute 3 1°C. The unreliable character of RF estimates makes it worthwhile to use different scenarios of RF changes. Developments in this field can be exemplified by the work of Tett et al. (1999). 

Efficiency indicators. This type of indicator reflects the level of efficiency of an anthropogenic impact on the environment that can be seen by changes in biogeochemical cycles. 

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