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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ftdoajarticles:oai:doaj.org/article:9119ade09d044f748425136e5eaeabf5 2023-05-15T17:34:04+02:00 Formulation of a new explicit tidal scheme in revised LICOM2.0 J. Jin R. Guo M. Zhang G. Zhou Q. Zeng 2022-06-01T00:00:00Z https://doi.org/10.5194/gmd-15-4259-2022 https://doaj.org/article/9119ade09d044f748425136e5eaeabf5 EN eng Copernicus Publications https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-15-4259-2022 1991-959X 1991-9603 https://doaj.org/article/9119ade09d044f748425136e5eaeabf5 Geoscientific Model Development, Vol 15, Pp 4259-4273 (2022) Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/gmd-15-4259-2022 2022-12-30T21:27:40Z 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 Directory of Open Access Journals: DOAJ Articles Southern Ocean Geoscientific Model Development 15 10 4259 4273 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 J. Jin R. Guo M. Zhang G. Zhou Q. Zeng Formulation of a new explicit tidal scheme in revised LICOM2.0 |
topic_facet |
Geology QE1-996.5 |
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 |
J. Jin R. Guo M. Zhang G. Zhou Q. Zeng |
author_facet |
J. Jin R. Guo M. Zhang G. Zhou Q. Zeng |
author_sort |
J. Jin |
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://doaj.org/article/9119ade09d044f748425136e5eaeabf5 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
Geoscientific Model Development, Vol 15, Pp 4259-4273 (2022) |
op_relation |
https://gmd.copernicus.org/articles/15/4259/2022/gmd-15-4259-2022.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-15-4259-2022 1991-959X 1991-9603 https://doaj.org/article/9119ade09d044f748425136e5eaeabf5 |
op_doi |
https://doi.org/10.5194/gmd-15-4259-2022 |
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Geoscientific Model Development |
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15 |
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10 |
container_start_page |
4259 |
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4273 |
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