Manila Bay’s 'discoloration' in 2020 due to increased pollution, says PhilSA

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The sudden color change of Manila Bay’s waters from dark blue to turquoise blue in 2020 was caused by increased pollution emanating from Bacoor Bay and Pasig River, the Philippine Space Agency (PhilSA) disclosed.

The sudden color change of Manila Bay’s waters from dark blue to turquoise blue in 2020 was caused by increased pollution emanating from Bacoor Bay and Pasig River, the Philippine Space Agency disclosed, Thursday, Nov. 18.

The bright turquoise waters of Manila Bay stirred the news and social media last year, leaving unanswered queries. “Using spaceborne images, researchers were able to estimate the chlorophyll-a concentration and water turbidity in the area from March 13 to March 28. High water turbidity could indicate high water pollution while chlorophyll-a suggests algal abundance,” the agency said.

“However, since chlorophyll-a levels did not increase significantly around Manila Bay, the change could not be attributed to algal bloom,” it added.

 

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