Modelling of oak pollen dispersal on the landscape level with a mesoscale atmospheric model

Hamburg

2005

6 Abb., 2 Tab.

Artikel aus einer ZeitschriftUnselbständiges Werk

15307

200128303

We present the application of the mesoscale atmospheric meteorology model METRAS for dispersion of oak pollen. We incorporated functions for pollen emission, pollen viability and pollen deposition into METRAS and simulated pollen dispersal on a scale of up to 2000 km. Basis of the simulations is a real landscape structure that includes topography, land-use, and the location and size of oak stands. We simulated the oak pollen dispersion of one single oak stand with an estimated annual pollen production of 1 billion pollen grains per m2 forest surface on two exemplary days of the flowering season 2000. Depending on the meteorological situation of the simulated days, a pollen cloud with about 10 pollen/m3 extends up to 30 km from the source. Downstream of the oak stand approximately 1000 pollen/m2 deposited up to a distance of 25 km and lower amounts of pollen deposited up to 100 km away. These values of pollen concentration and deposition lay within the range of published field studies. Overall, it is shown that mesoscale atmospheric models are highly applicable to simulate pollen dispersal on the landscape level.