The role of plants as monitors of radionuclides is twofold: as monitors of recent atmospheric releases of radionuclides; and as indicators of the long-term behavior of aged deposits of radionuclides in the soil.
Although measures against pollution have had some effect, the seriousness of this problem has not alleviated… However, recent atmospheric pollution has really sounded a warning to us: if we continue this way of development instead of adjusting it, the long-term damage will be serious.
A3 Ancient Greenhouse Gases Shafts of ancient ice pulled from Antarctica's frozen depths show that for at least 650,000 years three important heat-trapping greenhouse gases never reached recent atmospheric levels caused by human activities, scientists are reporting.
Recent atmospheric mercury contamination in outdoor urban air was measured at 0.01 0.02 µg/m3.
The ocean acidification is therefore somehow delayed in this area and the pH is more dependent on the upwelling activity than on the recent increase of atmospheric CO2.
This decrease in stream nitrate preceded the recent decline in atmospheric nitrate deposition due to controls on nitrogen oxide emissions from power plants that came into effect in 2003 (Table 1).
However, the recent development of atmospheric-pressure plasma technologies offers new alternatives for surface treatment and coating deposition in large areas.
"The trade winds are partly a natural cycle but also the recent intensification is related to atmospheric warming".
Such a recommendation is based on the recent studies on nonlinear dynamics and atmospheric disturbance by means of experiments as well as theoretical analysis.
Our study indicated that the recent global warming coupled with increased atmospheric CO2 concentration, and to a lesser extent of nitrogen deposition as it is low compared with other regions [43], is accountable for increased height growth during the period of 160 years for spruce.
