IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Microwave observations of La Plata basin vegetated environments: analysis of AMSR-E, SMOS and Aquarius data
Autor/es:
KARSZENBAUM HAYDEE; GRINGS, FRANCISCO MATIAS; CARBALLO, FEDERICO; SALVIA, MARÍA MERCEDES; BARRAZA, VERONICA; BRUSCANTINI, CINTIA; RAHMOUNE, RASHID; FERRAZZOLI, PAOLO
Lugar:
Buenos Aires
Reunión:
Encuentro; 7th Aquarius/SAC-D Science Meeting; 2012
Institución organizadora:
CONAE
Resumen:
This work is being done within the Aquarius SACD NASA-CONAE science project "La Plata Basin floods and droughts: Contribution of microwave remote sensing in monitoring and prediction". The main goal of this project is soil moisture retrieval within different vegetated areas (forest, wetlands, agriculture) with the aim of generating precedent soil moisture condition for Extreme Hydrological Events (EHE) monitoring and prediction. To analyze the sensitivity of passive microwaves to different precipitation conditions in croplands and forest, a time series analysis of AMSR-E data was performed. The temporal behavior of Tbv, Tbh, polarization index and two different soil moisture products (NASA and LPRM) were analyzed. This study showed that under strong rain events significant changes were observed in physical variables and soil moisture products. Also, the influence of vegetation opacity is discussed using MODIS NDVI values. During 2010, SMOS data were also analyzed and compared to AMSR-E data. More recently (December 2011- March 2012) Aquarius data were included and brightness temperatures and polarization index comparisons have been done with SMOS data in two sites: Pampas plains (agriculture area) and Chaco Forest (dry forest). NDVI, precipitation data and crop calendar were used as ancillary data for analysis and interpretation.