Daily Variations of Temperature and Humidity within and Above Amazonian Forest

摘要

The behavior of profiles of humidity and temperature above and within the canopy of Amazonian forest in dry and wet conditions is demonstrated; qualitative insight into some of the processes involved in energy exchange from this type of vegetation is allowed. In dry daylight conditions the temperature, humidity and humidity deficit of the top two thirds of the canopy are similar to those of the atmosphere above, but air at the base of the canopy is strongly decoupled. At night the behavior is reversed, and air in the lower two thirds of the canopy is partly decoupled from that a higher levels. The response to convective storms is rapid but fairly short lived, and local energy advection can occur during and after rainfall.