Environmental impacts of atmospheric nitrous oxide
1993; Elsevier BV; Volume: 44; Issue: 3 Linguagem: Inglês
10.1016/0306-2619(93)90018-k
ISSN1872-9118
Autores Tópico(s)Atmospheric and Environmental Gas Dynamics
ResumoNitrous oxide (N2O) is an important trace gas in the atmosphere. Changes in the atmospheric concentration of N2O have evoked considerable concern because of its role in (i) regulating stratospheric ozone levels, (ii) contributing to the atmospheric greenhouse phenomenon and (iii) participating in the acid-rain formation process. The global concentration of N2O in the atmosphere has been rising since the start of the Industrial Revolution, before which it was almost constant at about 285 ± 5 ppbv (billion = 109). In 1990, the concentration reached about 310 ppbv and is now rising at a rate of 0·5-1·1 ppbv (i.e. 0·2-0·3%) per year. In this paper, the environmental impacts of the increasing atmospheric concentration of N2O are discussed.
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