Boundary Layer Convection

Cumulus clouds over mountains

w* = (g Ho Zi / T)1/3

Boundary Layer Convection is the result of surface fluxes of heat and moisture triggering small-scale non-precipitating updrafts. Cloud-top radiative cooling can also play an important role. Scales range from a few 10s of m to a few km in the horizontal and a few hundred m to a few km in the vertical. The up- and downdrafts of boundary layer convection is the primary way in which the atmosphere moves heat, moisture, momentum, and pollutants between the Earth's surface and the atmosphere. Thus, boundary layer convection is important in the global climate modeling, numerical weather prediction, air-quality modeling, and the dynamics of numerous mesoscale phenomena. The role of boundary layer convection in triggering thunderstorms remains largely unexplored as does the extent to which small scale terrain features impact the location and structure of boundary layer convective elements.

Field Experiments | Selected Publications


Field Experiments

Year

Project

Location

Platform

2013-2014

OWLeS

Lake Ontario

University of Wyoming KingAir Aircraft

1997-1998

Lake ICE

Lake Michigan

NCAR Electra Aircraft

1992

ASTEX

Eastern North Atlantic

NCAR Electra Aircraft

Research Vessel Oceanus

1987

FIRE

Eastern North Pacific

NCAR Electra Aircraft

1984

PHOENIX 84

Colorado

NCAR Kingair Aircraft


Selected Publications