Spatial distribution of carbon dioxide (CO2) fluxes in the Sunda Strait and west of Sumatra waters

• Published in: IOP conference series. Earth and environmental science 2023-06, Vol.1201 (1), p.12061
• Main Authors: Wahyono, I B, Aldrian, E, Soepardjo, A H
• Format: Article
• Language: English
• Subjects: Atmosphere; carbon; Carbon dioxide; Carbon sequestration; Carbon sinks; Carbon sources; Climate change; Drought; flux; Forest fires; Global warming; Oceans; Partial pressure; Sea level rise; sink; Sinkholes; source; Spatial distribution; Straits
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1201/1/012061

Carbon dioxide (CO 2 ) is one of the main global warming gases which cause global climate changes, droughts, forest fires, sea level rise, and flooding. Natural CO 2 sinks are the mainland, oceans, and atmosphere. Indonesian waters have the potential to absorb CO 2 due to their high primary productivity. This study aimed to understand the variability of CO 2 in order to determine whether Indonesian waters act as carbon sources or carbon sinks and fill the CO 2 data gaps. The field survey was conducted at the Sunda Strait and west Sumatra waters during February–April 2010, using RV Baruna Jaya III. The Sunda Strait has a role as a carbon source, whereas the west of Sumatra waters as carbon sinks. The partial pressure of CO 2 is more influenced by the pH. The average net flux of CO 2 in the Sunda strait was 841.603 mol CO 2 cm −2 day −1 , which shows the release of CO 2 from the ocean into the atmosphere occurs in this region. On the other hand, the average net flux of CO 2 in the west of Sumatra was -945.292 mol CO 2 cm −2 day −1 , which shows the absorption of CO 2 by the ocean occurs in the region.