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The Temporal Trends in Chlorophyll-A Concentration along the Southern Coast of Papua over a 25-Year Period, from 1998 to 2022
 
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1
Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, 50275 Indonesia
 
2
Physical Oceanography Laboratory, Department of Physics and Earth Sciences, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
 
3
Research Center for Oceanography, National Research and Innovation Agency, Jakarta, 14430 Indonesia
 
4
Geodesy Engineering Department, National Institute of Technology Malang, Malang, 65145 Indonesia
 
5
School of Meteorology Climatology and Geophysics, Indonesian Agency for Meteorology Climatology and Geophysics, Tangerang Selatan, 15119 Indonesia
 
6
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University, Bogor, 16680 Indonesia
 
 
Corresponding author
Yusuf Jati Wijaya   

Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, 50275 Indonesia
 
 
Ecol. Eng. Environ. Technol. 2023; 6:82-93
 
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ABSTRACT
The region situated along the southern coast of Papua Island exhibits a considerable likelihood of upwelling, which is distinguished by higher amounts of chlorophyll-a concentration. The present study examined the variability of upwelling phenomena spanning a period of 25 years (1998-2022) through the utilization of satellite-derived data obtained from the Ocean-Colour Climate Change Initiative (OC-CCI). Apart from the chlorophyll-a concentration, the southern region of Papua exhibits a significant amount of suspended sediment contamination, as indicated by the observations of Rrs 555. Upon conducting EOF analysis during each season, it has been observed that there has been a significant rise in the levels of chlorophyll-a concentrations over the past several years in the northern region of the Arafura Sea. The period spanning from 2016 to 2022 witnessed a rise in precipitation amounts, leading to a greater transportation of nutrients through water discharge and consequently resulting in an increase of chlorophyll-a concentration.
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