In this work the seasonal behavior and the daily cycle of micrometeorological parameters and energy fluxes, in Amazonian forest (Rebio Jaru) and Transitional Amazonia-Cerrado forest (Maracaí Farm) is analyzed. The measurements were done by equipments installed in the micrometeorological towers of LBA project (Large Scale Biosphere-Atmosphere Experiment in Amazonia), one located near from Ji-Paraná city, RO (area of Amazonian forest) and other located near from Sinop city, MT (area of Transitional forest). The results analysis indicate the existence of a well defined seasonality with dry and wet seasons in both localities, which is reflected in the behavior of the precipitation, air humidity and temperature and, consequently, in the latent heat (λE) and sensible heat (H) fluxes. In the energy balance, the daily means show a different behavior of λE, in both areas, indicating more adaptation capacity of Amazonia forest to the dry period. The Rn/λE partition values showed similar seasonal behavior for both areas, with larger values for the wet season, decreasing for the dry season.
tropical forest; energy balance; mass exchange; eddy covariance; seasonality
