Statistics and Dynamics of Aircraft Encounters of Turbulence over Greenland
Todd P Lane, James D Doyle, Robert D Sharman, Melvyn A Shapiro, Campbell D Watson
MONTHLY WEATHER REVIEW | AMER METEOROLOGICAL SOC | Published : 2009
Historical records of aviation turbulence encounters above Greenland are examined for the period from 2000 to 2006. These data identify an important flow regime that contributes to the occurrence of aircraft turbulence encounters, associated with the passage of surface cyclones that direct easterly or southeasterly flow over Greenland's imposing terrain. The result of this incident flow is the generation of mountain waves that may become unstable through interactions with the background directional wind shear. It is shown that this regime accounted for approximately 40% of the significant turbulent events identified in the 7-yr database. In addition, two specific cases from the database are ..View full abstract
Awarded by Office of Naval Research
We thank three anonymous reviewers for their constructive comments that helped improve the manuscript. The first author (TPL) was supported by a University of Melbourne Early Career Research grant. The second author (JDD) acknowledges support through the Office of Naval Research's Program Element 0601153N. Computational resources were supported in part by a grant of HPC time from the Department of Defense Major Shared Resource Center at Wright Patterson Air Force Base, OH. COAMPS is a registered trademark of the Naval Research Laboratory. Cyclone statistics were created using http://www.earthsci.unimelb.edu.au/tracks/cychome.htm; we thank Kevin Keay for his assistance. Figures 5c, 9c, and 14c were obtained from the NERC Satellite Receiving Station, Dundee University, Scotland (available online at http://www.sat.dundee.ac.uk/).