Lecture 7 - Test Flashcards
The balance between incoming & outgoing short & long wave radiation typically results in
Weak free convection at night
A greater ratio of indirect to direct shortwave radiation at the surface would be expected with
-substantial cumulus cloud cover
-shading of the surface by vegetation
-strong Mie scattering
A negative Bowen ratio would be expected
In a desert oasis
In comparison to surface temperature, soil temperature displays
Damped temporal variation and a time lag
Vertical transport of heat and moisture is more effective in turbulent compared to laminar flow because
Eddy diffusivity is faster than molecular diffusion by several orders of magnitude
Characteristics of the turbulent surface layer include:
-effective vertical mixing
-air from upper atmosphere bought to surface
An air parcel is saturated when
Air begins to cool at the saturated adiabatic lapse rate
An atmosphere dominated by free convection is characterised by
Vertically stretched turbulent eddies
The Oasis effect leads to
Qe being the largest term in the surface energy balance
According to the leading edge effect, at the change from a dry to wet surface, we would expect …
An inversion layer to develop
Warm (land) air blowing over a cool sea surface is most likely to result in
Cold water advection fog
Under what conditions would orographic enhancement of rainfall not be expected?
The presence of a higher mountain chain immediately upwind.
What convection type typically results in greater mixing throughout the boundary layer?
Free convection
True or false: early morning temperatures would normally be warmer at the floor of the Northeast valley compared to Signal Hill
False - cold air sinks in the ponding process
