the oceans are changing color!

2023-09-17 06:00:09

The deep blue of the oceans, often glorified in postcards, is fading, especially in tropical regions. A recent study reveals that this transformation is not a simple natural phenomenon, but could be linked to human activity.
Image d’illustration Pixabay

Over the past two decades, low-latitude oceans have become greener, according to a report published in the journal Nature. The research team analyzed data (In information technology (IT), data is often an elementary description. ..) satellites covering a period of 20 years and concluded that 56% of the surface of the ocean (Oceans stylized Ωceans is a documentary French made by…) had become greener since the beginning of the century (A century is now a period of one hundred years. The word comes from the Latin saeculum, i, which…). This color change could have repercussions on marine food webs, although the study did not specify its broader impact on humans. The study highlights that ocean color is a multivariate indicator, meaning that multiple factors can influence water color (Water is a ubiquitous chemical compound on Earth, essential for all… ). Some of these factors, such as certain wavelengths, have low interannual variability, which makes it possible to detect trends linked to change more quickly. climatic.

Contrary to popular belief, this trend does not appear to be linked to rising sea surface temperatures. Emmanuel Boss, also a co-author of the study, said: “We don’t know causes this trend. This could be due to dissolved organic matter, changes in type and quantity. generic metrology (count, amount); a scalar,…) phytoplankton… all these aspects can affect the color of the ocean.”

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The team hopes that other researchers will look into this question to identify the exact causes of these changes.

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