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Upwelling variability along the southern coast of Bali and in Nusa Tenggara waters |
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| Authors: | Nining Sari Ningsih Noviani Rakhmaputeri Agung B Harto |
| Institution: | 14. Research Group of Oceanography, Faculty of Earth Sciences and Technology, Bandung Institute of Technology (ITB), Bandung, Indonesia 24. United Surveyors Pte Ltd., 1092 Lower Delta Road, 169203, Singapore, Singapore 34. Research Group of Remote Sensing and Geographical Information Sciences, Faculty of Earth Sciences and Technology, Bandung Institute of Technology (ITB), Bandung, Indonesia |
| Abstract: | Spatial and temporal variation of upwelling along the southern coast of Bali and in the Nusa Tenggara waters — Indonesia was studied by using satellite image data of sea surface temperatures and chlorophyll-a from September 1997 to December 2008. This study clearly reveals annual upwelling in the regions from June to October, associated with the southeast monsoon cycle, with the sea surface temperature (chlorophyll-a concentration) being colder (higher) than that during the northwest monsoon. In addition, this study also shows that the upwelling strength is controlled remotely by ENSO and IOD climate phenomena. During El Niño/positive IOD (La Niña/negative IOD) periods, the Bali — Nusa Tenggara upwelling strength increases (decreases). |
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