Impacts of atmospheric pressure on the annual maximum of monthly sea-levels in the Northeast Asian Marginal seas SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Impacts of atmospheric pressure on the annual maximum of monthly sea-levels in the Northeast Asian Marginal seas
Author(s)
Han, Myeong-Hee; Cho, Yang-Ki; Kang, Hyoun-Woo; Nam, Sung-Hyun; Byun, Do-Seong; Jeong, Kwang-Young; Lee, Eunil
KIOST Author(s)
Kang, Hyoun-Woo(강현우)
Publication Year
2020-06
Abstract
Monthly mean sea-levels have annual maxima in August in the northeast Asian marginal seas (NEAMS). Based on satellite altimetry data, the rising rate of the August NEAMS sea-level (ANS, 4.2 mm•yr-1) is greater than those of the NEAMS (3.6 mm•yr-1) and global (3.4 mm•yr-1) annual mean sea-levels. Thus, the interannual variations of ANS are classified as relatively high (period H) and low (period L) years and have been analysed because of the high risk of sea-level fluctuation to the coastal regions in August. In period H, there are large atmospheric pressure gradients between the high pressure zone in the Kuroshio Extension (KE) and the low pressure zone in the west of Taiwan (WT). In period L, the atmospheric pressure gradients are small between the above-mentioned zones. Large atmospheric pressure gradients induce strong west-northwestward wind stresses and more Ekman transport from the northwest Pacific Ocean into the NEAMS. The correlation coefficient between August NEAMS sea-level index (ANSI), which is the difference of atmospheric pressure anomalies between the KE and the WT, and the August NEAMS sea-level anomaly (ANSA) is 0.73. Although there is a significant correlation (coefficient: 0.64) between ANSA and the East Asian summer monsoon index (EASMI), ANSI might be more useful in estimating the variability of ANSA. © 2020 by the authors.
ISSN
2077-1312
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38618
DOI
10.3390/JMSE8060425
Bibliographic Citation
Journal of Marine Science and Engineering, v.8, no.6, 2020
Publisher
MDPI AG
Keywords
Atmospheric pressure; August NEAMS sea-level index; Ekman transport; Interannual variation; Satellite altimetry; Sea-level; Wind stress
Type
Article
Language
English
Document Type
Article
Publisher
MDPI AG
Related Researcher
Research Interests

Marine System Modeling,Ocean Climate,Ocean Circulation,해양시스템모델링,해양 기후,해양 순환

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