NDLI: Evaluation of tidal error in altimetry data in the Asian marginal seas

Content Provider	Springer Nature Link
Author	Morimoto, Akihiko
Copyright Year	2009
Abstract	The magnitude and geographical distribution of the error in the Archiving, Validation and Interpretation of Satellite Oceanographic data (AVISO) altimetry data associated with tidal correction around Asian marginal seas has been revealed. The errors were evaluated by harmonic analysis of the AVISO corrected sea surface heights data (CorSSH). Errors of more than 15 cm of tidal correction were recognized in the western and northern parts of the Yellow Sea, Celebes Sea, Kuril Islands, and the northwestern part of the Okhotsk Sea. It was found that the CorSSH and sea level anomaly (SLA) data downloaded from the AVISO are not available for direct use in those marginal seas. To reduce the tidal correction error, the harmonic constants calculated from the latest tide model and regional tide model were applied as the tidal correction of the Altimetry data. The tidal errors in the Yellow Sea and the northwestern part of the Okhotsk Sea were reduced by approximately 20 cm and 10 cm, respectively. Root mean square differences between the harmonic constants derived from tide models and those derived from altimetry data were calculated. The root mean square differences were large in the Yellow and the Okhotsk Seas. Root sum squares for four principal tidal constituents in the Yellow and East China Seas and Okhotsk Sea were 7.72 cm and 8.36 cm, respectively.
Starting Page	477
Ending Page	485
Page Count	9
File Format	PDF
ISSN	09168370
Journal	Journal of Oceanography
Volume Number	65
Issue Number	4
e-ISSN	1573868X
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-11-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Altimeter tidal correction AVISO Asian marginal seas Freshwater & Marine Ecology Oceanography
Content Type	Text
Resource Type	Article
Subject	Oceanography

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