Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8863509 | Atmospheric Environment | 2018 | 32 Pages |
Abstract
With Radar-based precipitation data at the stations and along connecting trajectories sub-cloud particle scavenging was investigated. At each station sub-cloud particle scavenging coefficients were determined as a function of particle size between 10 and 700â¯nm diameter, and as a function of precipitation sums. Median particle scavenging coefficients taken over the central part of the size range of the study strongly increased between 0.2 and 1â¯mm of precipitation and then planed out towards higher precipitation values. With the particle scavenging coefficients determined at the individual stations and precipitation data along connecting trajectories the sub-cloud particle scavenging analysis was extended to wet scavenging along the transport paths yielding median sub-cloud scavenging ratios over the range 0.2-25â¯mm of precipitation sums with a non-linear shape similar to that of the median particle scavenging coefficients at the individual stations. Whereas in light precipitation more than 80% of the initial particles in the considered range survived 150-200â¯km of transport, more than 50% was scavenged by more than 15â¯mm of precipitation during aerosol transport.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Atmospheric Science
Authors
Jost Heintzenberg, Fabian Senf, Wolfram Birmili, Alfred Wiedensohler,