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    CO2 Sink/Source in the Indonesian Seas

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    Type
    Presentation
    Authors
    Kartadikaria, Aditya R. cc
    Watanabe, Atsushi
    Nadaoka, Kazuo
    Prayitno, Hanif
    Adi, Novi
    Suharsono, Suharsono
    Muchtar, Muswerry
    Triyulianti, Iis
    Setiawan, Agus
    Suratno, Suratno
    Khasanah, Elly
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2015-04
    Permanent link to this record
    http://hdl.handle.net/10754/595097
    
    Metadata
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    Abstract
    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.
    Conference/Event name
    EGU General Assembly 2015
    Additional Links
    http://adsabs.harvard.edu/abs/2015EGUGA..17.1999K
    Collections
    Physical Science and Engineering (PSE) Division; Presentations

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