Search Results

You are looking at 1 - 5 of 5 items for :

  • Radiative fluxes x
  • Ontario Winter Lake-effect Systems (OWLeS) x
  • All content x
Clear All
Philip T. Bergmaier and Bart Geerts

1. Introduction During the cool season, lake-effect (LE) snowfall is common over and downwind of the Laurentian Great Lakes in North America when cold air masses are advected across the warmer lake surface. The large surface heat and moisture fluxes that result lead to destabilization of the boundary layer (BL) over the lake and the formation of clouds and precipitation. When the prevailing BL flow is oriented along the major axis of an elongated lake such as Lake Ontario, LE precipitation can

Restricted access
Daniel T. Eipper, George S. Young, Steven J. Greybush, Seth Saslo, Todd D. Sikora, and Richard D. Clark

: environmental diabatic processes (such as surface buoyancy flux and radiative flux convergence), diabatic processes in convective parcels (such as latent heat release), and destabilization of the environment through differential thermal advection (by both horizontal and vertical components of the synoptic-scale wind). Specifically, during the satellite survey referenced in section 3a(3) , differential thermal advection by the horizontal components of the synoptic-scale wind appeared to be associated with

Full access
David A. R. Kristovich, Richard D. Clark, Jeffrey Frame, Bart Geerts, Kevin R. Knupp, Karen A. Kosiba, Neil F. Laird, Nicholas D. Metz, Justin R. Minder, Todd D. Sikora, W. James Steenburgh, Scott M. Steiger, Joshua Wurman, and George S. Young

intervening land surfaces; 2) understand the processes involved in the development of lake-effect snows over the New York State Finger Lakes and how these processes differ from the larger Great Lakes; 3) examine how organized, initially convective lake-effect structures persist far downstream over land, long after leaving the buoyancy source; 4) examine how surface fluxes, lake-scale circulations, cloud microphysics, and radiative processes affect the formation and structure of long-fetch LeSs; 5

Full access
W. James Steenburgh and Leah S. Campbell

precipitation maximum during IOP2b. The simulation includes domains with 12-, 4-, and 1.3-km grid spacing [see Fig. 1 of Campbell and Steenburgh (2017) for nesting configuration and topography], 36 vertical levels with 8 levels at or below 1 km AGL, and a parameterization suite that includes the Rapid Radiative Transfer Model longwave radiation scheme ( Iacono et al. 2008 ), Dudhia shortwave radiation scheme ( Dudhia 1989 ), Noah land surface model ( Chen and Dudhia 2001 ), Yonsei University planetary

Full access
Jake P. Mulholland, Jeffrey Frame, Stephen W. Nesbitt, Scott M. Steiger, Karen A. Kosiba, and Joshua Wurman

1. Introduction Lake-effect snowfall impacts many regions downwind of the Great Lakes every winter, with locations such as the Tug Hill Plateau of upstate New York receiving average annual accumulations over 200 cm. As continental polar air masses cross the Great Lakes, vertical fluxes of heat and moisture from the lake surfaces into the overlying air masses moisten and destabilize the lower boundary layer (BL). This allows for the formation of sometimes vigorous BL convection, often manifested

Full access