Small‐Scale Circulations Caused by Complex Terrain Affect Pollen Deposition

• DOI: 10.2135/cropsci2011.07.0354
• Publication Date: 2012-04-23T14:57:10Z
• Authors: Brian J. Viner; Raymond W. Arritt
• Keywords: Agrostis stolonifera; Deposition

ABSTRACT We combined a high‐resolution atmospheric dynamical model and Lagrangian dispersion to assess the influence of complex terrain (e.g., mountains valleys) on movement pollen from source genetically modified bentgrass ( Agrostis stolonifera L.). simulated 6 d (22–27 June 2003) reported case where gene flow in was observed at distances greater than 20 km near Madras, OR (44°44′24″ N, 121°9′30″ W). Our resolves effects local turbulence that were not considered by previous studies. deposition over its locations previously observed. simulations showed strongly affected deposition; for example, grains deposited large quantities within valleys or windward sides mountains. Examination these regions indicated creates circulations must be when predicting potential flow.