Sea surface height variability from satellite altimetry and pressure-recording inverted echo sounders in the north equatorial current region
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Title
- Sea surface height variability from satellite altimetry and pressure-recording inverted echo sounders in the north equatorial current region
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Author(s)
- 전찬형; 박재훈; 김동국; 김응; 전동철; Randolph D. Watts
- KIOST Author(s)
- Kim, Dong Guk(김동국); Kim, Eung(김응)
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Alternative Author(s)
- 전찬형; 박재훈; 김동국; 김응; 전동철
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Publication Year
- 2014-10-23
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Abstract
- An array of 4 pressure-recording inverted echo sounders (PIESs) was deployed across the North Equatorial Current (NEC) in the Northwestern Pacific Equatorial (NPE) region. The PIES measures bottom pressure and round-trip acoustic travel time from the sea floor to the sea surface. The mass-loading and steric height variations in sea surface height (SSH) anomaly are estimated with the bottom pressure and round-trip acoustic travel time measurements, respectively. In situ SSH anomaly measurements from the PIESs are compared with three sets of satellite-measured SSH anomaly products from AVISO, mono-mission and multi-mission along-track delayed-time products and reference merged (gridded) delayed-time product (Ref-MSLA). Out of the three AVISO products, Ref-MSLA shows the best match with PIES-derived SSH anomaly in the range of 0.68 to 0.78 correlations. Outstanding error-reduced results in Ref-MSLA are accounted for the merging process conducted by AVISO. This work suggests that Ref-MSLA is the preferable data set to investigate the SSH variability in the NPE region than along-track products.e from the sea floor to the sea surface. The mass-loading and steric height variations in sea surface height (SSH) anomaly are estimated with the bottom pressure and round-trip acoustic travel time measurements, respectively. In situ SSH anomaly measurements from the PIESs are compared with three sets of satellite-measured SSH anomaly products from AVISO, mono-mission and multi-mission along-track delayed-time products and reference merged (gridded) delayed-time product (Ref-MSLA). Out of the three AVISO products, Ref-MSLA shows the best match with PIES-derived SSH anomaly in the range of 0.68 to 0.78 correlations. Outstanding error-reduced results in Ref-MSLA are accounted for the merging process conducted by AVISO. This work suggests that Ref-MSLA is the preferable data set to investigate the SSH variability in the NPE region than along-track products.
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/25928
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Bibliographic Citation
- PICES 2014 annual meeting, pp.165 - 167, 2014
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Publisher
- PICES
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Type
- Conference
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Language
- English
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