The basic equations - Severe Convective Storms and Tornadoes: Observations and Dynamics - page 70

Figure 2.15. Be´ nard-Rayleigh-like convection represented by (a) cells of clouds over the Gulf
of Mexico on November 5, 2004, when cold air from the north is flowing over the warm water
surface to the south and (b) cumulus clouds over land (near the Oklahoma-Texas border on the
Red River) on June 24, 1984, as viewed from an aircraft, as the surface is heated during the
daytime (photograph by the author).