Original Research Papers
Anthropogenic versus natural sources of atmospheric sulphate from an Alpine ice core
Authors:
- M. SchwikowskiEmail M. Schwikowski
- A. Döscher
- H.W. Gäggeler
- U. Schotterer
Abstract
Opposite to greenhouse gases, sulphate aerosol particles are expected to cause climate cooling, but uncertainties exist about source variability and strength. We analysed an ice core from a European glacier to quantify source strengths of aerosol-borne sulphate over a 200-year period. Sulphate from emissions of SO2 increased by more than an order of magnitude during this century. This anthropogenic source is responsible for about 80% of total sulphate in the industrial period, and reflects emissions of west European countries. In the pre-industrial period mineral dust was the dominant contributor, followed by sulphate from SO2 emissions with volcanoes or biomass burning as possible sources.
- Year: 1999
- Volume: 51 Issue: 5
- Page/Article: 938–951
- DOI: 10.3402/tellusb.v51i5.16506
- Submitted on 29 Jan 1999
- Accepted on 2 Jun 1999
- Published on 1 Jan 1999
- Peer Reviewed