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Title:
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Het effect van aerosol-deeltjes op het klimaat is niet-lineair
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Author(s):
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Published by:
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Publication date:
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ECN
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1997
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ECN report number:
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Document type:
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ECN-I--97-037
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Other
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Number of pages:
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Full text:
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22
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Download PDF
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Abstract:
In IPCC scenarios it is assumed that the (cooling) effects of aerosols onclimatic change are proportional with the concentration and the emission of
(anthropogenic) aerosols. In this article it is shown that such a linear
dependency can not exist. Most of the anthropogenic particulates are not
directly emitted by pollution sources, but are formed in the atmosphere by
oxidation of emitted gases, e.g. SO2 and NOx. For Europe the relation between
emission of the gases and the amount of aerosols is far from linear. Not only
the amount but also the size of the aerosol particulates changes when the
quantity of material differs as a result of emission changes. The number of
particulates, which is the best measure for the indirect effect, hardly shows
a connection with the amount of aerosol material and the number could even
increase as a result of emission reduction. It can be concluded that the
aerosol effects are strongly nonlinear. 5 refs.
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