PIES와 위성고도계로 쿠로시오직류 해역에서 관측한 해수면 높이 변동

Title
PIES와 위성고도계로 쿠로시오직류 해역에서 관측한 해수면 높이 변동
Alternative Title
Sea surface height variability observed by pressure-recording inverted echo sounders (PIESs) and satellite altimetry in the Kuroshio Extension
Author(s)
박재훈; D. Randolph Watts; Kathleen A. Donohue; Karen L. Tracey
Alternative Author(s)
박재훈
Publication Year
2011-09-01
Abstract
AVISO along-track and gridded sea level anomaly (SLA) products are compared with in-situ sea surface height anomaly (SSHA) measurements from an array of 43 pressure-recording inverted echo sounders (PIESs) in the Kuroshio Extension. The bottom pressure and acoustic echo time measurements from PIES are used to estimate, respectively, the mass-loading and steric height components in SSHA. Overall, along-track SLA and PIES-derived SSHA agree well each other with mean correlation coefficient of 0.97. Comparisons show that the mass-loading component is relatively small in this region. The AVISO up-to-date gridded product, which merges all available satellite measurements of Jason-1, Envisat, Geosat Follow-On, and TOPEX/Poseidon, shows better correlations and smaller rms differences than the AVISO reference gridded product, which merges only Jason-1 and Envisat. Gridded products exhibit low correlation (0.75−0.9) with PIES-derived SSHA in a region where the SSHA have relatively high energy at periods shorter than the Nyquist frequency of Jason-1 (20 days).
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/28226
Bibliographic Citation
China-Korea Joint Workshop on Northwestern Pacific-Indian Ocean Circulation and theic Climate Effect, pp.24 - 31, 2011
Publisher
FIO,KORDI
Type
Conference
Language
English
Publisher
FIO,KORDI
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