caa a22 4500 445863641 CHVBK 20180317145451.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10453-010-9176-9 doi (NATIONALLICENCE)springer-10.1007/s10453-010-9176-9 Investigation into mountain pine beetle above-canopy dispersion using weather radar and an atmospheric dispersion model [Elektronische Daten] [Bruce Ainslie, Peter Jackson] Above-canopy, wind-assisted mountain pine beetle (MPB) dispersion in British Columbia (BC) is examined during the summer 2005 beetle emergence period. Above-canopy dispersion is simulated by the HYSPLIT atmospheric dispersion model using back trajectories started from locations identified by clear-air returns from the Prince George BC weather radar station. The dispersion calculations are carried out over the 10days showing the highest intensity of clear-air returns from the 2005 emergence season. The Weather Research and Forecast (WRF) model is used to simulate the meteorological conditions during each of the 10 emergence days. Cumulative clear-air returns throughout each emergence day are used to estimate the distribution of beetle emergence times and atmospheric residence times. Evaluation of the WRF model output is presented using both surface and upper air observations. Evaluation of the HYSPLIT model is performed through a comparison of the vertical distribution of MPB observed in a previous study. A secondary HYSPLIT evaluation is performed using aerial surveys taken during the following summer (2006), which identify the previous years' beetle-infested regions. Beetle flight distances from the time of beetle emergence to the time of peak clear-air returns are calculated for each trajectory, and the distribution of all flight distances is presented. The mean back trajectory distance is 20.2km with a standard deviation of 13.6km. These values represent the MPB flight distance during half of the beetle atmospheric residence time, and typical daily wind-assisted dispersion distances would be expected to be roughly double this value. Mean beetle residence time in the atmosphere over the 10 emergence events is found to be 3.2h. Springer Science+Business Media B.V., 2010 Mountain pine beetle nationallicence Dispersion nationallicence Trajectory analysis nationallicence Weather Radar nationallicence Ainslie Bruce Natural Resources and Environmental Studies Institute, Environmental Science and Engineering Program, University of Northern BC, 3333, University Way, V2N 4Z9, Prince George, BC, Canada aut Jackson Peter Natural Resources and Environmental Studies Institute, Environmental Science and Engineering Program, University of Northern BC, 3333, University Way, V2N 4Z9, Prince George, BC, Canada aut Aerobiologia Springer Netherlands 27/1(2011-03-01), 51-65 0393-5965 27:1<51 2011 27 10453 https://doi.org/10.1007/s10453-010-9176-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10453-010-9176-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ainslie Bruce Natural Resources and Environmental Studies Institute, Environmental Science and Engineering Program, University of Northern BC, 3333, University Way, V2N 4Z9, Prince George, BC, Canada aut NATIONALLICENCE 700 1- Jackson Peter Natural Resources and Environmental Studies Institute, Environmental Science and Engineering Program, University of Northern BC, 3333, University Way, V2N 4Z9, Prince George, BC, Canada aut NATIONALLICENCE 773 0- Aerobiologia Springer Netherlands 27/1(2011-03-01), 51-65 0393-5965 27:1<51 2011 27 10453 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer