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In this letter, multitemporal signatures collected by Advanced Microwave Scanning Radiometer (AMSR-E) over the dry forest of Chaco, located in North Argentina, are analyzed. The forest has a biomass of about 100 t/ha and a woody volume of about 120 . A clear increase of polarization index at C-band is observed after intense rain events in two different locations. Simulations...
Over the past two decades, orbital passive microwave systems have proven to be sensitive to flood condition in large floodplains. This sensitivity is rooted in the well differentiated emission properties of calm water with respect to non-flooded land of any kind. In this paper, AMSR-E observations of an herbaceous wetland area on the Paraná River sub-basin were analyzed during the 2009-10 timeframe...
The synergy between active and passive observations is becoming an attractive subject, particularly stimulated by the SMAP program. This paper investigates the potential advantage of the synergy related to the decoupling between the influence of soil and vegetation variables. If both the emissivity e and the backscattering coefficient σ° are available, the ratio between σ° and the reflectivity 1-e...
This paper describes a microwave model which simulates the emissivity of forests, including litter effects. Detailed input data about forest geometry are obtained by direct measurements and/or by allometric equations. Model outputs have been compared with multifrequency measurements carried out over five broadleaf forests in Italy. Fundamental information about forest properties was available. A general...
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