Abstract
In this paper several boreal forest areas are considered, and microwave multifrequency properties of emission, measured by AMSR-E, are analysed. Selected areas are classified as forests by ECOCLIMAP data base. By considering multifrequency and multitemporal properties during one year, significant differences are observed among the areas. In particular late winter periods, showing deep dry snow layers, have been taken. In the frequency interval 10-37 GHz, the slope of the decreasing trend of emissivity vs. frequency shows a significant inverse correlation with branch biomass. The latter is estimated by using the Leaf Area Index (LAI), given by the same ECOCLIMAP, and allometric equations derived by the literature. This paper shows results of this experimental study. Results are interpreted by a semiempirical model. Snow emission is described by empirical models derived by literature, while the forest is described as a volume of dielectric cylinders, using routines able to compute cross sections.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
