3.1.1 Orinoco delta region
The diurnal cycles of mean wind speed and potential temperature (Fig. 6)
along the Orinoco delta region and Venezuelan Llanos (axis of
propagation M in Fig. 5), show the sea breeze already established at
1100 LST (Fig. 6b), with a well-defined thermal internal boundary layer
to the east of 64ºW; an indication that cool maritime air has advanced
over the Orinoco delta region. As the day progresses, this denser air is
advected further onshore, and once it reaches the western limit of the
Guanipa Mesa (~64.5ºW) around 1500 LST (Fig. 6c), it
flows downslope causing the wind to accelerate.