ISSN:
1573-1472
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Measurements of vertical profiles of pollen concentration from local and remote sources have been made during convective conditions with balloon-mounted rotating impaction samplers. The vertical profiles of local particles appear to be usually characterized by a decrease in the ground layer and by almost constant values aloft. A minimum often occurs at levels between 100 and 200 m. The concentration profiles of pollen from remote sources present a peak at heights of some hundred meters. By comparing the observed profiles with some published models of transport, it appears that: (i) because of differing eddy scales, turbulent transport affects the settling of pollen differently close to the ground than aloft; and (ii) turbulent anisotropies related to the dynamic and thermal structure of the atmosphere may affect the vertical distribution of particulate matter in the boundary layer.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00121043
