Cluster analysis was applied to a precipitation chemistry data base obtained by sampling by means of 8 wet-only samplers on one location in the northwestern part of The Netherlands for sampling periods of 2 and 3 days. Two main groups were found, corresponding to either continental or maritime origin, which coincided with prior meteorological analysis. Each main group consisted of two subgroups. Polluted maritime air seems to be an important source of H+, presumably due to the low NH3 concentration in maritime air and hence little neutralization of strong acids.
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Slanina, J., Baard, J.H., Zijp, W.L. et al. Tracing the sources of the chemical composition of precipitation by cluster analysis. Water Air Soil Pollut 20, 41–45 (1983). https://doi.org/10.1007/BF00279495
- Cluster Analysis
- Sampling Period
- Data Base
- Main Group