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Current and past radiative forcing, from human and natural causes Current and past radiative forcing, from human and natural causes
The radiative forcing from the increase in anthropogenic greenhouse gases since the pre-industrial era is positive (warming) with a small uncertainty range; that from the direct effects of aerosols is negative (cooling) and smaller; whereas the negative forcing from the indirect effects of aerosols (on clouds and the hydrologic cycle) might be large but is not well quantified. Key anthropogenic and natural factors causing a change in radiative fo...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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