Interaction between the Land Surface and Atmosphere

New insight is obtained into the structure of the
convective atmospheric boundary layer
(CBL) over surface heat flux variation on a scale of
the order of 10 km. Aircraft data collected during
the International H2O Project (IHOP_2002) and large
eddy simulation (LES) are used.
The new insight includes the followings:
First, the CBL changes from a quasi-stationary
state to a non-stationary state when forced by a
high-amplitude surface heat flux variation.
Second, the structure of the CBL in a
non-stationary state cannot be described with the
mixed-layer similarity.
Third, moisture advection by the
surface-heterogeneity-induced mesoscale horizontal
flows plays a significant role in initiating moist
convection.

Autorentext

2008-Present Postdoctotal Fellow, National Center for AtmosphericResearch - Advanced Study Program 2003-2007 Research Assistant, PSU1996-2001 Staff, Korea Meteorological Administration2007 Ph.D. Pennsylvania State University (PSU), University Park,U.S.A.1998 M.S., 1992 B.S. Yonsei University,Seoul,Korea

Klappentext

New insight is obtained into the structure of theconvective atmospheric boundary layer(CBL) over surface heat flux variation on a scale ofthe order of 10 km. Aircraft data collected duringthe International H2O Project (IHOP_2002) and largeeddy simulation (LES) are used. The new insight includes the followings: First, the CBL changes from a quasi-stationarystate to a non-stationary state when forced by ahigh-amplitude surface heat flux variation. Second, the structure of the CBL in anon-stationary state cannot be described with themixed-layer similarity. Third, moisture advection by thesurface-heterogeneity-induced mesoscale horizontalflows plays a significant role in initiating moistconvection.