HR: 14:45h
AN: A43G-04    [Abstracts]
TI: NAO-related Variability in Arctic Storm Activity and its Effect on Cloud Cover
AU: * Previdi, M
EM: mprevidi@envsci.rutgers.edu
AF: Rutgers University, Department of Environmental Sciences 14 College Farm Road, New Brunswick, NJ 08901 United States
AU: Veron, D E
EM: veron@envsci.rutgers.edu
AF: Rutgers University, Department of Environmental Sciences 14 College Farm Road, New Brunswick, NJ 08901 United States
AB: Variability in Arctic and sub-Arctic storm activity on intraseasonal, interannual and decadal timescales is associated primarily with the North Atlantic Oscillation (NAO). NAO-related changes in storminess affect a wide range of sensible weather, including air temperature, precipitation and wind. We focus on a less often examined climate impact of these storm changes, their effect on cloud cover. The NAO modulation of storminess in the high latitude North Atlantic is studied using composites of regional climate model simulations representative of NAO extremes. The associated changes in cloud cover and their role in producing the mean surface air temperature response to NAO variability are then discussed.
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3349 Polar meteorology
DE: 3355 Regional modeling
DE: 9315 Arctic region (0718, 4207)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005