海洋学报（英文版）
海洋學報（英文版）
해양학보（영문판）
ACTA OCEANOLOGICA SINICA
2014年
11期
141-149
,共9页
advanced synthetic aperture radar%Changjiang coast%Doppler centroid anomaly%range Doppler velocity%finite volume coastal ocean model
Range Doppler velocities derived from the Envisat advanced synthetic aperture radar (ASAR) wide swath images are analyzed and assessed against the numerically simulated surface current fields derived from the finite volume coastal ocean model (FVCOM) for the Changjiang Estuary. Comparisons with the FVCOM simulations show that the European Space Agency (ESA) Envisat ASAR based Doppler shift anomaly retriev-als have the capability to capture quantitative information of the surface currents in the Changjiang Estu-ary. The uncertainty analysis of the ASAR range Doppler velocity estimates are discussed with regard to the azimuthal and range bias corrections, radar incidence angles, inaccuracy in the wind field corrections and the presence of rain cells.The corrected range Doppler velocities for the Changjiang Estuary area are highly valuable as they exhibit quantitative expressions related to the multiscale upper layer dynamics and surface current variability around the East China Sea, including the Changjiang Estuary.
