IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
La Plata River Plume, challenging waters for atmospheric correction and TSM algorithms
Autor/es:
DOGLIOTTI, A.I.; VANHELLEMONT, Q.; RUDDICK, K.
Reunión:
Encuentro; 1st CoastColour User Consultation Meeting; 2010
Resumen:
The La Plata River drains the second largest basin of South America,
covering an area of 3.1 x 106 km2 and discharging an average of 23,000
m3 s-1 of freshwater into the Atlantic Ocean at 35ºS. The river outflow
introduces suspended matter (with a suspended sediment concentration
ranging from 100 mg L-1 to 300 mg L-1), dissolved and particulate
organic matter into the shelf influencing the optical properties of the
coastal waters, making satellite sensors the most suitable tools
available to map the river influence on the adjacent ocean. A data base
of MODIS/Aqua level 2 total suspended matter (TSM) product (Nechad et
al., Rem. Sens. Env. 2010) from the study region has been generated and
the analysis showed that most of the upper region of the estuary is
usually masked (CLD,HILT,ATMFAIL) due to the highly turbid and
reflective waters. Thus, the application of a different atmospheric
correction and adaptation of the TSM algorithm are required if useful
information from this region is to be retrieved. Similar products from
MERIS instrument are desired given its particular characteristics (more
bands and higher spatial resolution) which make it suitable for
retrieving information on water constituents in this highly turbid
coastal region.