Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats
Abstract The authors examine small-scale spatiotemporal variability of the layer nearly 2000-m depth, which is the “bottom” of the present Argo observation system, using all of available Argo float data. The 10-day change, Δ T 10 , is defined as the difference of temperature between two successive o...
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2021
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Online Access: | http://dx.doi.org/10.1007/s10872-021-00613-6 https://link.springer.com/content/pdf/10.1007/s10872-021-00613-6.pdf https://link.springer.com/article/10.1007/s10872-021-00613-6/fulltext.html |
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crspringernat:10.1007/s10872-021-00613-6 2023-05-15T18:25:10+02:00 Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats Kawai, Yoshimi Hosoda, Shigeki Ministry of Education, Culture, Sports, Science and Technology Japan Society for the Promotion of Science 2021 http://dx.doi.org/10.1007/s10872-021-00613-6 https://link.springer.com/content/pdf/10.1007/s10872-021-00613-6.pdf https://link.springer.com/article/10.1007/s10872-021-00613-6/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Journal of Oceanography volume 77, issue 6, page 879-895 ISSN 0916-8370 1573-868X Oceanography journal-article 2021 crspringernat https://doi.org/10.1007/s10872-021-00613-6 2022-01-04T11:16:18Z Abstract The authors examine small-scale spatiotemporal variability of the layer nearly 2000-m depth, which is the “bottom” of the present Argo observation system, using all of available Argo float data. The 10-day change, Δ T 10 , is defined as the difference of temperature between two successive observations with an interval of nearly 10 days for each individual float at an isobaric surface. |Δ T 10 | is large along the western boundary currents at 1000 dbar, and becomes less remarkable with depth. At 1950 dbar, mean |Δ T 10 | is noticeable in the northeastern Atlantic Ocean (NEAO), the Argentine basin, and the northwestern Indian Ocean. In the Southern Ocean, large |Δ T 10 | is localized in some areas located over the ridges or leeward of the plateau. Basically, Δ T 10 at isobaric surfaces is accounted for by the heave component, but the spiciness component is dominant or comparable to the other in the NEAO and the Argentine basin. Δ T 10 decreases with depth monotonically most of the world, suggesting that wind energy input is attenuated with depth. In some areas in the Southern Ocean, however, the vertical profile of |Δ T 10 | implies enhanced bottom-induced turbulence. |Δ T 10 | peaks at 1300 dbar in the NEAO, corresponding to the spread of the Mediterranean Outflow Water. |Δ T 10 | is smaller in the Pacific Ocean compared with the other oceans, but is enhanced along the equator, the Kuroshio and its Extension, the Kuril, Aleutian, Hawaii, and Mariana Islands, and the Emperor Seamount Chain. Article in Journal/Newspaper Southern Ocean Springer Nature (via Crossref) Argentine Emperor Seamount Chain ENVELOPE(168.955,168.955,47.893,47.893) Indian Pacific Southern Ocean Journal of Oceanography |
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Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Oceanography |
spellingShingle |
Oceanography Kawai, Yoshimi Hosoda, Shigeki Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
topic_facet |
Oceanography |
description |
Abstract The authors examine small-scale spatiotemporal variability of the layer nearly 2000-m depth, which is the “bottom” of the present Argo observation system, using all of available Argo float data. The 10-day change, Δ T 10 , is defined as the difference of temperature between two successive observations with an interval of nearly 10 days for each individual float at an isobaric surface. |Δ T 10 | is large along the western boundary currents at 1000 dbar, and becomes less remarkable with depth. At 1950 dbar, mean |Δ T 10 | is noticeable in the northeastern Atlantic Ocean (NEAO), the Argentine basin, and the northwestern Indian Ocean. In the Southern Ocean, large |Δ T 10 | is localized in some areas located over the ridges or leeward of the plateau. Basically, Δ T 10 at isobaric surfaces is accounted for by the heave component, but the spiciness component is dominant or comparable to the other in the NEAO and the Argentine basin. Δ T 10 decreases with depth monotonically most of the world, suggesting that wind energy input is attenuated with depth. In some areas in the Southern Ocean, however, the vertical profile of |Δ T 10 | implies enhanced bottom-induced turbulence. |Δ T 10 | peaks at 1300 dbar in the NEAO, corresponding to the spread of the Mediterranean Outflow Water. |Δ T 10 | is smaller in the Pacific Ocean compared with the other oceans, but is enhanced along the equator, the Kuroshio and its Extension, the Kuril, Aleutian, Hawaii, and Mariana Islands, and the Emperor Seamount Chain. |
author2 |
Ministry of Education, Culture, Sports, Science and Technology Japan Society for the Promotion of Science |
format |
Article in Journal/Newspaper |
author |
Kawai, Yoshimi Hosoda, Shigeki |
author_facet |
Kawai, Yoshimi Hosoda, Shigeki |
author_sort |
Kawai, Yoshimi |
title |
Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
title_short |
Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
title_full |
Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
title_fullStr |
Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
title_full_unstemmed |
Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats |
title_sort |
global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with argo floats |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s10872-021-00613-6 https://link.springer.com/content/pdf/10.1007/s10872-021-00613-6.pdf https://link.springer.com/article/10.1007/s10872-021-00613-6/fulltext.html |
long_lat |
ENVELOPE(168.955,168.955,47.893,47.893) |
geographic |
Argentine Emperor Seamount Chain Indian Pacific Southern Ocean |
geographic_facet |
Argentine Emperor Seamount Chain Indian Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Journal of Oceanography volume 77, issue 6, page 879-895 ISSN 0916-8370 1573-868X |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10872-021-00613-6 |
container_title |
Journal of Oceanography |
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1766206413548290048 |