Estimation of chlorophyll-a contents on the sea surface by Remote Sensing Technology
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Author |
Chaiphat Plybour and Teerawong Laosuwan
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e-ISSN |
1819-6608 |
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On Pages
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900-905
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Volume No. |
18
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Issue No. |
08
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Issue Date |
June 15, 2023
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DOI |
https://doi.org/10.59018/0423119
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Keywords |
remote sensing, electromagnetic waves, chlorophyll-a.
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Abstract
Chlorophyll-a is a green pigment found in primary producers like phytoplankton and has always been used as an indicator of phytoplankton abundance in water sources. The objective of this study was to estimate the chlorophyll-a content at the upper Gulf of Thailand sea surface in 2021 using Aqua/MODIS satellite data, together with relevant factors: wind currents and sea surface temperatures. The chlorophyll-a content analysis was performed using NASA's Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Data Analysis System (SeaDAS). The analysis results showed that the chlorophyll-a content on the sea surface was highest during the southwest monsoon (May-October) and lowest during the northeast monsoon (November-April). The average chlorophyll-a content in 2021 was found to be the highest in October at 3.396 mg/m3and the lowest in August at 0.781 mg/m3. It was also found that the chlorophyll-a content on the sea surface was correlated with changes in wind currents caused by the influence of monsoon winds and sea surface temperatures.
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