Variability of surface chlorophyll-a distributions in the northwestern coast of Sumatra revealed by MODIS

Sari, Qurnia Wulan and Utari, Putri Adia and Setiabudidaya, Dedi and Yustian, Indra and Siswanto, Eko and Iskandar, Iskhaq (2018) Variability of surface chlorophyll-a distributions in the northwestern coast of Sumatra revealed by MODIS. Journal of Physics: Conference Series, 1080 (012045). pp. 1-7. ISSN 1742-6588/1742-6596

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Abstract

The variability of surface chlorophyll-a (chl-a) distributions in the northwestern coast of Sumatra are important components associated with the phytoplankton biomass that supports and enrich the fishery resources of the region. This study analyzes satellite data-ocean color derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua for a period of January 2003 to December 2015. The results show that the surface chl-a distribution is strongly associated with the large-scale forcing (e.g. monsoonal winds, EL Niño–Southern Oscillation and the Indian Ocean Dipole). On the seasonal time scale, it is shown that the satellite observed surface chl-a concentration during the boreal fall and winter (September- January) is higher than that observed during the boreal summer (June-August). The highest concentration was observed in September which is about 0.2 mg m-3. In contrast to the western coast, the surface chl-a in the eastern coast of Sumatra has excessive concentration around 0,5- 10 mg m-3 all year around. In addition, the study also revealed that the anomaly of surface chl-a concentration was observed along the western coast of Sumatra is much higher during the positive IOD (pIOD) and EL Niño events.

Item Type: Article
Subjects: Q Science > Q Science (General) > Q1-295 General
Divisions: 11-Postgraduates Study > 95029-Environmental Science (S3)
Depositing User: Dr Indra Yustian
Date Deposited: 01 Dec 2021 08:58
Last Modified: 01 Dec 2021 08:58
URI: http://repository.unsri.ac.id/id/eprint/57528

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