Formulation of a new explicit tidal scheme in revised LICOM2.0
Tides play an important role in ocean energy transfer and mixing, and provide major energy for maintaining thermohaline circulation. This study proposes a new explicit tidal scheme and assesses its performance in a global ocean model. Instead of using empirical specifications of tidal amplitudes and...
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2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00061232 2023-05-15T17:33:46+02:00 Formulation of a new explicit tidal scheme in revised LICOM2.0 Jin, Jiangbo Guo, Run Zhang, Minghua Zhou, Guangqing Zeng, Qingcun 2022-06 electronic https://doi.org/10.5194/gmd-15-4259-2022 https://noa.gwlb.de/receive/cop_mods_00061232 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060721/gmd-15-4259-2022.pdf https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf eng eng Copernicus Publications Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-15-4259-2022 https://noa.gwlb.de/receive/cop_mods_00061232 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060721/gmd-15-4259-2022.pdf https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/gmd-15-4259-2022 2022-06-05T23:11:42Z Tides play an important role in ocean energy transfer and mixing, and provide major energy for maintaining thermohaline circulation. This study proposes a new explicit tidal scheme and assesses its performance in a global ocean model. Instead of using empirical specifications of tidal amplitudes and frequencies, the new scheme directly uses the positions of the moon and sun in a global ocean model to incorporate tides. Compared with the traditional method that has specified tidal constituents, the new scheme can better simulate the diurnal and spatial characteristics of the tidal potential of spring and neap tides as well as the spatial patterns and magnitudes of major tidal constituents (K1 and M2). It significantly reduces the total errors of eight tidal constituents (with the exception of N2 and Q1) in the traditional explicit tidal scheme, in which the total errors of K1 and M2 are reduced by 21.85 % and 32.13 %, respectively. Relative to the control simulation without tides, both the new and traditional tidal schemes can lead to better dynamic sea level (DSL) simulation in the North Atlantic, reducing significant negative biases in this region. The new tidal scheme also shows smaller positive bias than the traditional scheme in the Southern Ocean. The new scheme is suited to calculate regional distributions of sea level height in addition to tidal mixing. Article in Journal/Newspaper North Atlantic Southern Ocean Niedersächsisches Online-Archiv NOA Southern Ocean Geoscientific Model Development 15 10 4259 4273 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Jin, Jiangbo Guo, Run Zhang, Minghua Zhou, Guangqing Zeng, Qingcun Formulation of a new explicit tidal scheme in revised LICOM2.0 |
topic_facet |
article Verlagsveröffentlichung |
description |
Tides play an important role in ocean energy transfer and mixing, and provide major energy for maintaining thermohaline circulation. This study proposes a new explicit tidal scheme and assesses its performance in a global ocean model. Instead of using empirical specifications of tidal amplitudes and frequencies, the new scheme directly uses the positions of the moon and sun in a global ocean model to incorporate tides. Compared with the traditional method that has specified tidal constituents, the new scheme can better simulate the diurnal and spatial characteristics of the tidal potential of spring and neap tides as well as the spatial patterns and magnitudes of major tidal constituents (K1 and M2). It significantly reduces the total errors of eight tidal constituents (with the exception of N2 and Q1) in the traditional explicit tidal scheme, in which the total errors of K1 and M2 are reduced by 21.85 % and 32.13 %, respectively. Relative to the control simulation without tides, both the new and traditional tidal schemes can lead to better dynamic sea level (DSL) simulation in the North Atlantic, reducing significant negative biases in this region. The new tidal scheme also shows smaller positive bias than the traditional scheme in the Southern Ocean. The new scheme is suited to calculate regional distributions of sea level height in addition to tidal mixing. |
format |
Article in Journal/Newspaper |
author |
Jin, Jiangbo Guo, Run Zhang, Minghua Zhou, Guangqing Zeng, Qingcun |
author_facet |
Jin, Jiangbo Guo, Run Zhang, Minghua Zhou, Guangqing Zeng, Qingcun |
author_sort |
Jin, Jiangbo |
title |
Formulation of a new explicit tidal scheme in revised LICOM2.0 |
title_short |
Formulation of a new explicit tidal scheme in revised LICOM2.0 |
title_full |
Formulation of a new explicit tidal scheme in revised LICOM2.0 |
title_fullStr |
Formulation of a new explicit tidal scheme in revised LICOM2.0 |
title_full_unstemmed |
Formulation of a new explicit tidal scheme in revised LICOM2.0 |
title_sort |
formulation of a new explicit tidal scheme in revised licom2.0 |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/gmd-15-4259-2022 https://noa.gwlb.de/receive/cop_mods_00061232 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060721/gmd-15-4259-2022.pdf https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_relation |
Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-15-4259-2022 https://noa.gwlb.de/receive/cop_mods_00061232 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060721/gmd-15-4259-2022.pdf https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/gmd-15-4259-2022 |
container_title |
Geoscientific Model Development |
container_volume |
15 |
container_issue |
10 |
container_start_page |
4259 |
op_container_end_page |
4273 |
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1766132383380144128 |