Water masses in the far western equatorial Pacific during the winters of 2010 and 2012
Conductivity-temperature-depth (CTD) data obtained during the 2010 La Nina winter and the 2012 normal winter, combined with concurrent Argo profiling float data, provide a quasi-synoptic description of the water mass distributions and their variations in the far western equatorial Pacific Ocean. The...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/156402 2023-05-15T14:03:36+02:00 Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 Li Bo Yuan Dongliang Zhou Hui 2018-09-01 http://ir.qdio.ac.cn/handle/337002/156402 https://doi.org/10.1007/s00343-018-6068-2 英语 eng SCIENCE PRESS JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/156402 doi:10.1007/s00343-018-6068-2 far western equatorial Pacific North Pacific Tropic Water South Pacific Tropical Water tropical subsurface water La Nina Marine & Freshwater Biology Oceanography Limnology SEA-SURFACE SALINITY ANTARCTIC INTERMEDIATE WATER MINDANAO CURRENT TROPICAL PACIFIC INTERANNUAL VARIATIONS OCEAN CIRCULATION THERMOCLINE WATER PHILIPPINE SEA BARRIER LAYER WARM POOL 期刊论文 2018 ftchinacasciocas https://doi.org/10.1007/s00343-018-6068-2 2022-06-27T05:39:00Z Conductivity-temperature-depth (CTD) data obtained during the 2010 La Nina winter and the 2012 normal winter, combined with concurrent Argo profiling float data, provide a quasi-synoptic description of the water mass distributions and their variations in the far western equatorial Pacific Ocean. The water mass connection between the western Pacific and the east Indonesian seas is emphasized. Analysis indicates that the North Pacific Tropical Water (NPTW, S>34.9) carried by the Mindanao Current southward and the South Pacific Tropical Water (SPTW, S>35.1) from the southern hemisphere meet in the area. Observations suggest that the southward transport of the NPTW is stronger in 2010 than in 2012 due to enhanced advection of the Mindanao Current. The distribution of SPTW, which crosses the equator in the northwest direction and retroflects back to the interior Pacific Ocean, is found to retreat from 4 degrees-5 degrees N in 2012 to 2 degrees-3 degrees N in 2010 La Nina peak in the 130 degrees E section. A relatively fresh tropical subsurface water is identified in between the NPTW and the SPTW, moving eastward with the North Equatorial Countercurrent into the equatorial Pacific Ocean. However, the salinity maximum of this subsurface fresh water is found to decrease eastward, suggesting that the salinity maximum is generated either by strong diapycnal mixing or by isopycnal mixing of temporally entrained Indonesian sea water into the area. Report Antarc* Antarctic Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Antarctic Pacific Journal of Oceanology and Limnology 36 5 1459 1474 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
far western equatorial Pacific North Pacific Tropic Water South Pacific Tropical Water tropical subsurface water La Nina Marine & Freshwater Biology Oceanography Limnology SEA-SURFACE SALINITY ANTARCTIC INTERMEDIATE WATER MINDANAO CURRENT TROPICAL PACIFIC INTERANNUAL VARIATIONS OCEAN CIRCULATION THERMOCLINE WATER PHILIPPINE SEA BARRIER LAYER WARM POOL |
spellingShingle |
far western equatorial Pacific North Pacific Tropic Water South Pacific Tropical Water tropical subsurface water La Nina Marine & Freshwater Biology Oceanography Limnology SEA-SURFACE SALINITY ANTARCTIC INTERMEDIATE WATER MINDANAO CURRENT TROPICAL PACIFIC INTERANNUAL VARIATIONS OCEAN CIRCULATION THERMOCLINE WATER PHILIPPINE SEA BARRIER LAYER WARM POOL Li Bo Yuan Dongliang Zhou Hui Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
topic_facet |
far western equatorial Pacific North Pacific Tropic Water South Pacific Tropical Water tropical subsurface water La Nina Marine & Freshwater Biology Oceanography Limnology SEA-SURFACE SALINITY ANTARCTIC INTERMEDIATE WATER MINDANAO CURRENT TROPICAL PACIFIC INTERANNUAL VARIATIONS OCEAN CIRCULATION THERMOCLINE WATER PHILIPPINE SEA BARRIER LAYER WARM POOL |
description |
Conductivity-temperature-depth (CTD) data obtained during the 2010 La Nina winter and the 2012 normal winter, combined with concurrent Argo profiling float data, provide a quasi-synoptic description of the water mass distributions and their variations in the far western equatorial Pacific Ocean. The water mass connection between the western Pacific and the east Indonesian seas is emphasized. Analysis indicates that the North Pacific Tropical Water (NPTW, S>34.9) carried by the Mindanao Current southward and the South Pacific Tropical Water (SPTW, S>35.1) from the southern hemisphere meet in the area. Observations suggest that the southward transport of the NPTW is stronger in 2010 than in 2012 due to enhanced advection of the Mindanao Current. The distribution of SPTW, which crosses the equator in the northwest direction and retroflects back to the interior Pacific Ocean, is found to retreat from 4 degrees-5 degrees N in 2012 to 2 degrees-3 degrees N in 2010 La Nina peak in the 130 degrees E section. A relatively fresh tropical subsurface water is identified in between the NPTW and the SPTW, moving eastward with the North Equatorial Countercurrent into the equatorial Pacific Ocean. However, the salinity maximum of this subsurface fresh water is found to decrease eastward, suggesting that the salinity maximum is generated either by strong diapycnal mixing or by isopycnal mixing of temporally entrained Indonesian sea water into the area. |
format |
Report |
author |
Li Bo Yuan Dongliang Zhou Hui |
author_facet |
Li Bo Yuan Dongliang Zhou Hui |
author_sort |
Li Bo |
title |
Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
title_short |
Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
title_full |
Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
title_fullStr |
Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
title_full_unstemmed |
Water masses in the far western equatorial Pacific during the winters of 2010 and 2012 |
title_sort |
water masses in the far western equatorial pacific during the winters of 2010 and 2012 |
publisher |
SCIENCE PRESS |
publishDate |
2018 |
url |
http://ir.qdio.ac.cn/handle/337002/156402 https://doi.org/10.1007/s00343-018-6068-2 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/156402 doi:10.1007/s00343-018-6068-2 |
op_doi |
https://doi.org/10.1007/s00343-018-6068-2 |
container_title |
Journal of Oceanology and Limnology |
container_volume |
36 |
container_issue |
5 |
container_start_page |
1459 |
op_container_end_page |
1474 |
_version_ |
1766274311504527360 |