P.P. Tans et al., J. Geophys. A 2-D model analysis indicates that the low growth rate in 1992 is mainly due to an increase in the Northern Hemisphere CO 2 sink, probably in the terrestrial biosphere. One possibility is the temperature-induced decrease in plant respiration due to cooling following the Mount Pinatubo eruption. However, the fluctuation is probably temporary, and a return to a higher growth rate is expected. Forest Soils, Swed.
Kenyan farmers seem to apply sustainable management practices, including tree growing.
Modeling results demonstrate the strong remote effects of African biomass burning which, due to the general circulation of the atmosphere, are felt as far away as South America. New York Univ. A number of timescales are being used in both scientific and policy contexts to describe the behavior of greenhouse gases, but precise definitions are not being used, leading to confusion over how to calculate, compare and interpret these numbers. This paper analyzes the situation theoretically, particularly the case of departure from steady state as in the atmosphere. Discusses results in light of global warming policy issues, since any comparisons of lifetimes of different greenhouse gases must use a consistent definition.