Mapping sea surface velocities in the Changjiang coastal zone with advanced synthetic aperture radar

WANG Lihua; ZHOU Yunxuan; GE Jianzhong; JOHANNESSEN Johnny A.; SHEN Fang

doi:10.1007/s13131-014-0563-x

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Article Navigation > Acta Oceanologica Sinica > 2014 > 33(11): 141-149

WANG Lihua, ZHOU Yunxuan, GE Jianzhong, JOHANNESSEN Johnny A., SHEN Fang. Mapping sea surface velocities in the Changjiang coastal zone with advanced synthetic aperture radar[J]. Acta Oceanologica Sinica, 2014, 33(11): 141-149. doi: 10.1007/s13131-014-0563-x

Citation:

WANG Lihua, ZHOU Yunxuan, GE Jianzhong, JOHANNESSEN Johnny A., SHEN Fang. Mapping sea surface velocities in the Changjiang coastal zone with advanced synthetic aperture radar[J]. Acta Oceanologica Sinica, 2014, 33(11): 141-149. doi: 10.1007/s13131-014-0563-x

Citation:

WANG Lihua, ZHOU Yunxuan, GE Jianzhong, JOHANNESSEN Johnny A., SHEN Fang. Mapping sea surface velocities in the Changjiang coastal zone with advanced synthetic aperture radar[J]. Acta Oceanologica Sinica, 2014, 33(11): 141-149. doi: 10.1007/s13131-014-0563-x

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Mapping sea surface velocities in the Changjiang coastal zone with advanced synthetic aperture radar

doi: 10.1007/s13131-014-0563-x

1.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
2.
Nansen Environmental and Remote Sensing Center, Bergen 5006, Norway;Geophysical Institute, University of Bergen, Bergen 5006, Norway

Received Date: 2014-02-24
Rev Recd Date: 2014-03-20

Abstract

Abstract

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 retrievals have the capability to capture quantitative information of the surface currents in the Changjiang Estuary. 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.
- advanced synthetic aperture radar,
- Changjiang coast,
- Doppler centroid anomaly,
- range Doppler velocity,
- finite volume coastal ocean model

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References(32)

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