CO2 Sink/Source Characteristics in the Tropical Indonesian Seas

Handle URI:
http://hdl.handle.net/10754/582876
Title:
CO2 Sink/Source Characteristics in the Tropical Indonesian Seas
Authors:
Kartadikaria, Aditya R. ( 0000-0002-4385-5573 ) ; Watanabe, A.; Nadaoka, K.; Adi, N. S.; Prayitno, H. B.; Suharsono, S.; Muchtar, M.; Triyulianti, I.; Setiawan, A.; Suratno, S.; Khasanah, E. N.
Abstract:
Two distinct CO2 sink/source characteristics are found in the tropical Indonesian seas from the compilation of observed data for the period 1984-2013. The western region persistently emits CO2 to the atmosphere, whereas the eastern region is dynamic and acts either as a small source or sink of CO2 to the atmosphere, depending on sites. The segregation is proximal to the Makassar Strait, which is located over the continental shelf and is one of the main routes of the Indonesian Throughflow (ITF). Lower salinity and higher silicate were found in the western region, suggesting a terrestrial influence in this area. Temperature has a limited influence in controlling different CO2 sink/source characteristics in the west and east. However, an SST change of -2.0°C during La Niña events effectively reduces the pCO2 difference between the atmosphere and surface seawater by 50% compared to normal year conditions. During La Niña events, higher wind speeds double the CO2 flux from the ocean to the atmosphere compared to that of a normal year. In the continental shelf area where the CO2 sink area was found, data of over 29 years show that the seawater pCO2 increased by 0.6-3.8 μatm yr−1. Overall, the seawater pCO2 of the Indonesian Seas is supersaturated relative to the atmosphere by 15.9 ± 8.6 μatm and thus acts as a source of CO2 to the atmosphere. This article is protected by copyright. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
CO2 Sink/Source Characteristics in the Tropical Indonesian Seas 2015:n/a Journal of Geophysical Research: Oceans
Publisher:
Wiley-Blackwell
Journal:
Journal of Geophysical Research: Oceans
Issue Date:
5-Nov-2015
DOI:
10.1002/2015JC010925
Type:
Article
ISSN:
21699275
Additional Links:
http://doi.wiley.com/10.1002/2015JC010925
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorKartadikaria, Aditya R.en
dc.contributor.authorWatanabe, A.en
dc.contributor.authorNadaoka, K.en
dc.contributor.authorAdi, N. S.en
dc.contributor.authorPrayitno, H. B.en
dc.contributor.authorSuharsono, S.en
dc.contributor.authorMuchtar, M.en
dc.contributor.authorTriyulianti, I.en
dc.contributor.authorSetiawan, A.en
dc.contributor.authorSuratno, S.en
dc.contributor.authorKhasanah, E. N.en
dc.date.accessioned2015-11-29T08:47:57Zen
dc.date.available2015-11-29T08:47:57Zen
dc.date.issued2015-11-05en
dc.identifier.citationCO2 Sink/Source Characteristics in the Tropical Indonesian Seas 2015:n/a Journal of Geophysical Research: Oceansen
dc.identifier.issn21699275en
dc.identifier.doi10.1002/2015JC010925en
dc.identifier.urihttp://hdl.handle.net/10754/582876en
dc.description.abstractTwo distinct CO2 sink/source characteristics are found in the tropical Indonesian seas from the compilation of observed data for the period 1984-2013. The western region persistently emits CO2 to the atmosphere, whereas the eastern region is dynamic and acts either as a small source or sink of CO2 to the atmosphere, depending on sites. The segregation is proximal to the Makassar Strait, which is located over the continental shelf and is one of the main routes of the Indonesian Throughflow (ITF). Lower salinity and higher silicate were found in the western region, suggesting a terrestrial influence in this area. Temperature has a limited influence in controlling different CO2 sink/source characteristics in the west and east. However, an SST change of -2.0°C during La Niña events effectively reduces the pCO2 difference between the atmosphere and surface seawater by 50% compared to normal year conditions. During La Niña events, higher wind speeds double the CO2 flux from the ocean to the atmosphere compared to that of a normal year. In the continental shelf area where the CO2 sink area was found, data of over 29 years show that the seawater pCO2 increased by 0.6-3.8 μatm yr−1. Overall, the seawater pCO2 of the Indonesian Seas is supersaturated relative to the atmosphere by 15.9 ± 8.6 μatm and thus acts as a source of CO2 to the atmosphere. This article is protected by copyright. All rights reserved.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2015JC010925en
dc.rightsArchived with thanks to Journal of Geophysical Research: Oceans. An edited version of this paper was published by AGU. Copyright (2015) American Geophysical Union.en
dc.titleCO2 Sink/Source Characteristics in the Tropical Indonesian Seasen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Geophysical Research: Oceansen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionStudy Program of Oceanography; Bandung Institute of Technology; Jl. Ganesha 10 40132 Indonesiaen
dc.contributor.institutionDepartment of Mechanical and Environmental Informatics; Tokyo Institute of Technology; 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japanen
dc.contributor.institutionDepartment of Mechanical and Environmental Informatics; Tokyo Institute of Technology; 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japanen
dc.contributor.institutionResearch Center for Marine and Coastal Resources, Agency for Marine and Fisheries Research and Development; Ministry of Marine Affairs and Fisheries; Indonesia, Jl. Pasir Putih I Ancol Timur Jakarta 14430 Indonesiaen
dc.contributor.institutionResearch Center for Oceanography; Indonesian Institute of Sciences; Jl. Pasir Putih I Ancol Timur Jakarta 11048 Indonesiaen
dc.contributor.institutionResearch Center for Oceanography; Indonesian Institute of Sciences; Jl. Pasir Putih I Ancol Timur Jakarta 11048 Indonesiaen
dc.contributor.institutionResearch Center for Oceanography; Indonesian Institute of Sciences; Jl. Pasir Putih I Ancol Timur Jakarta 11048 Indonesiaen
dc.contributor.institutionInstitute for Marine Research and Observation, Ministry of Marine Affairs and Fisheries; Indonesia, Jl. Baru Perancak Negara-Jembrana Bali 82251 Indonesiaen
dc.contributor.institutionInstitute for Marine Research and Observation, Ministry of Marine Affairs and Fisheries; Indonesia, Jl. Baru Perancak Negara-Jembrana Bali 82251 Indonesiaen
dc.contributor.institutionResearch Center for Oceanography; Indonesian Institute of Sciences; Jl. Pasir Putih I Ancol Timur Jakarta 11048 Indonesiaen
dc.contributor.institutionResearch Center for Oceanography; Indonesian Institute of Sciences; Jl. Pasir Putih I Ancol Timur Jakarta 11048 Indonesiaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorKartadikaria, Aditya R.en
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