TY - JOUR
T1 - Simultaneous retrieval of aerosol and coastal ocean properties by optimal estimation
AU - Stamnes, Knut
AU - Li, Wei
AU - Spurr, R.
AU - Stamnes, Jakob J.
PY - 2009
Y1 - 2009
N2 - We analyze Sea Viewing Wide Field-Of-View Sensor (SeaWiFS) images over the Santa Barbara Channel. Pixel-by-pixel measurements of radiances at 8 SeaWiFS channels and analytic Jacobians are simulated using a coupled atmosphere-ocean radiative transfer model. The retrival algorithm is based on optimal estimation with loosely constrained a priori data. The 5-element state vector has two aerosol (optical depth at 865 nm, bimodal fraction of particles) and three marine parameters (chlorophyll concentration, detrital/dissolved-matter absorption at 443 nm, and backscattering coefficient at 443 nm). The retrieval is stable and well posed; the results are smoother and show less spread than those derived from the standard SeaDAS v4.8 algorithm. Water-leaving radiances agree well with field measurements. The average radiance residual is less than 1% for 7 SeaWiFS channels, and less than 2% for the 765 nm channel.
AB - We analyze Sea Viewing Wide Field-Of-View Sensor (SeaWiFS) images over the Santa Barbara Channel. Pixel-by-pixel measurements of radiances at 8 SeaWiFS channels and analytic Jacobians are simulated using a coupled atmosphere-ocean radiative transfer model. The retrival algorithm is based on optimal estimation with loosely constrained a priori data. The 5-element state vector has two aerosol (optical depth at 865 nm, bimodal fraction of particles) and three marine parameters (chlorophyll concentration, detrital/dissolved-matter absorption at 443 nm, and backscattering coefficient at 443 nm). The retrieval is stable and well posed; the results are smoother and show less spread than those derived from the standard SeaDAS v4.8 algorithm. Water-leaving radiances agree well with field measurements. The average radiance residual is less than 1% for 7 SeaWiFS channels, and less than 2% for the 765 nm channel.
KW - Coupled media
KW - Discrete-ordinate method
KW - Forward inverse modeling
KW - Radiative transfer
KW - Remote sensing
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U2 - 10.1063/1.3116987
DO - 10.1063/1.3116987
M3 - Conference article
AN - SCOPUS:65649101848
SN - 0094-243X
VL - 1100
SP - 343
EP - 346
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
T2 - International Radiation Symposium, IRS 2008
Y2 - 3 August 2008 through 8 August 2008
ER -