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| Titel |
CO2 Sink/Source in the Indonesian Seas |
| VerfasserIn |
Aditya Kartadikaria, Atsushi Watanabe, Kazuo Nadaoka, Hanif Prayitno, Novi Adi, Suharsono Suharsono, Muswerry Muchtar, Iis Triyulianti, Agus Setiawan, Suratno Suratno, Elly Khasanah |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250102124
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| Publikation (Nr.) |
 EGU/EGU2015-1999.pdf |
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| Zusammenfassung |
| Two distinct CO2 sink/source characteristics appeared from the compiled observed data
1984-2013 in the tropical Indonesian seas. The western part persistently emits CO2 to the
atmosphere, while the eastern is rather dynamic which emits and absorbs smaller amount of
CO2 to and from atmosphere, respectively. The segregation is proximal to the virtual
Wallace line, where in the continental shelf is located. Lower salinity and higher
silicate condition in the western part influenced the higher pCO2 condition in Java
Sea.
Temperature is found to have a limited influence to control different characteristic in
the west and east, but SST change of 2.0 0C during La Ninã condition effectively
reduced the source amount of CO2 by 50% compared to Normal year condition.
Yet, during La Ninã, higher wind speed increases CO2 flux twice compared to
Normal year. In the continental shelf area where CO2 sink area is found, 29 years data
showed that pCO2 trend is increasing ±0.6-3.8 μatm/year. From this study, the
overall areas have a significant source of CO2 of approximately 10 – 24 μatm. |
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