Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific
International audience [1] A detailed record of planktic delta(18)O from a sediment core in the Sulu Sea, located between the South China Sea and the western Pacific warm pool, reveals that for the past 400 kyr (1 kyr = 1000 years), delta(18)O variability on orbital timescales is similar to that cau...
Published in: | Geochemistry, Geophysics, Geosystems |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.science/hal-01460383 https://hal.science/hal-01460383/document https://hal.science/hal-01460383/file/2001GC000260.pdf https://doi.org/10.1029/2001GC000260 |
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ftinraparis:oai:HAL:hal-01460383v1 2024-06-23T07:55:00+00:00 Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific Oppo, Dw Linsley, Bk Rosenthal, Y Dannenmann, S Beaufort, L. Rutgers, The State University of New Jersey New Brunswick (RU) Rutgers University System (Rutgers) Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2003-01 https://hal.science/hal-01460383 https://hal.science/hal-01460383/document https://hal.science/hal-01460383/file/2001GC000260.pdf https://doi.org/10.1029/2001GC000260 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2001GC000260 hal-01460383 https://hal.science/hal-01460383 https://hal.science/hal-01460383/document https://hal.science/hal-01460383/file/2001GC000260.pdf doi:10.1029/2001GC000260 info:eu-repo/semantics/OpenAccess ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-01460383 Geochemistry, Geophysics, Geosystems, 2003, 4, ⟨10.1029/2001GC000260⟩ Sulu Sea tropical hydrography East Asian monsoon IMAGES suborbital climate variability sea level oceanography : general : paleoceanography oceanography : general : marginal and semienclosed seas global change : climate dynamics [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2003 ftinraparis https://doi.org/10.1029/2001GC000260 2024-06-11T14:57:49Z International audience [1] A detailed record of planktic delta(18)O from a sediment core in the Sulu Sea, located between the South China Sea and the western Pacific warm pool, reveals that for the past 400 kyr (1 kyr = 1000 years), delta(18)O variability on orbital timescales is similar to that caused by changes in ice volume alone. This result indicates that in the Sulu Sea, temperature-driven changes in planktic delta(18)O on orbital times scales were generally compensated for by the effects of sea level and changes in seasonal monsoon intensity on the local freshwater budget, as well as by other changes in the tropical hydrologic cycle and their attendant effects on surface water delta(18)O. Increased freshening of the western tropical Pacific warm pool is reminiscent of La Nina conditions. However, we argue that the mean tropical climate state was not more La Nina-like than today on broader spatial scales. Suborbital variability occurred in the Sulu Sea throughout the past 400 kyr, suggesting little sensitivity to ice volume or to glacial-interglacial changes in tropical hydrology. Variations on 4-10 kyr timescales appear to be linked to those in the North Atlantic region, suggesting a common forcing of that variability. We suggest that Sulu Sea salinity variations were a response to suborbital climate variability in the North Atlantic region, transmitted via changes in the intensity of the East Asian summer monsoon. We suggest that a North Atlantic origin of that tropical suborbital variability can be reconciled with weak glacial amplification in the tropics if the tropical response is nonlinear. Article in Journal/Newspaper North Atlantic Institut National de la Recherche Agronomique: ProdINRA Pacific Geochemistry, Geophysics, Geosystems 4 1 1 20 |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
English |
topic |
Sulu Sea tropical hydrography East Asian monsoon IMAGES suborbital climate variability sea level oceanography : general : paleoceanography oceanography : general : marginal and semienclosed seas global change : climate dynamics [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Sulu Sea tropical hydrography East Asian monsoon IMAGES suborbital climate variability sea level oceanography : general : paleoceanography oceanography : general : marginal and semienclosed seas global change : climate dynamics [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Oppo, Dw Linsley, Bk Rosenthal, Y Dannenmann, S Beaufort, L. Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
topic_facet |
Sulu Sea tropical hydrography East Asian monsoon IMAGES suborbital climate variability sea level oceanography : general : paleoceanography oceanography : general : marginal and semienclosed seas global change : climate dynamics [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience [1] A detailed record of planktic delta(18)O from a sediment core in the Sulu Sea, located between the South China Sea and the western Pacific warm pool, reveals that for the past 400 kyr (1 kyr = 1000 years), delta(18)O variability on orbital timescales is similar to that caused by changes in ice volume alone. This result indicates that in the Sulu Sea, temperature-driven changes in planktic delta(18)O on orbital times scales were generally compensated for by the effects of sea level and changes in seasonal monsoon intensity on the local freshwater budget, as well as by other changes in the tropical hydrologic cycle and their attendant effects on surface water delta(18)O. Increased freshening of the western tropical Pacific warm pool is reminiscent of La Nina conditions. However, we argue that the mean tropical climate state was not more La Nina-like than today on broader spatial scales. Suborbital variability occurred in the Sulu Sea throughout the past 400 kyr, suggesting little sensitivity to ice volume or to glacial-interglacial changes in tropical hydrology. Variations on 4-10 kyr timescales appear to be linked to those in the North Atlantic region, suggesting a common forcing of that variability. We suggest that Sulu Sea salinity variations were a response to suborbital climate variability in the North Atlantic region, transmitted via changes in the intensity of the East Asian summer monsoon. We suggest that a North Atlantic origin of that tropical suborbital variability can be reconciled with weak glacial amplification in the tropics if the tropical response is nonlinear. |
author2 |
Rutgers, The State University of New Jersey New Brunswick (RU) Rutgers University System (Rutgers) Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Oppo, Dw Linsley, Bk Rosenthal, Y Dannenmann, S Beaufort, L. |
author_facet |
Oppo, Dw Linsley, Bk Rosenthal, Y Dannenmann, S Beaufort, L. |
author_sort |
Oppo, Dw |
title |
Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
title_short |
Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
title_full |
Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
title_fullStr |
Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
title_full_unstemmed |
Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific |
title_sort |
orbital and suborbital climate variability in the sulu sea, western tropical pacific |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/hal-01460383 https://hal.science/hal-01460383/document https://hal.science/hal-01460383/file/2001GC000260.pdf https://doi.org/10.1029/2001GC000260 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-01460383 Geochemistry, Geophysics, Geosystems, 2003, 4, ⟨10.1029/2001GC000260⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2001GC000260 hal-01460383 https://hal.science/hal-01460383 https://hal.science/hal-01460383/document https://hal.science/hal-01460383/file/2001GC000260.pdf doi:10.1029/2001GC000260 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2001GC000260 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
4 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
20 |
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1802647372321259520 |