More Than Half of World’s Oceans Have Changed Colour, Know its Reason

The composition of more than 56 percent of the world’s oceans has changed significantly in the past two decades. The reason for this can be climate change due to human reasons. The size of these seas is bigger than the total land on earth. The color of the ocean gives an indication of the life and materials in its waters. In the regions near the equator, this color is more green in time. Due to this, changes in the ecosystem inside the surface of the oceans are being detected.

Researchers at the Massachusetts Institute of Technology (MIT) in the US have published in the journal Nature published They write in their paper that this change in color is less visible to the human eye and cannot be explained by year-to-year differences. Researchers have reported that it has become more green over time in the regions near the equator. The green color of sea water comes from the green pigment chlorophyll present in large quantities in microbes such as plants in the upper ocean. For this reason, scientists want to monitor it in their efforts to combat climate change.

However, the researchers involved in this study have shown through some previous studies that it will take about 30 years of monitoring chlorophyll before climate change trends are visible. Earlier in another study co-author Stephanie Dutkiewicz and her colleagues showed that plants with very little annual variation in chlorophyll Sea Monitoring other colors of CO may provide more clear signals of changes from climate change and may take about 20 years.

The study’s lead author BB Cael and his team analyzed all seven ocean colors recorded by satellite over the past 20 years. In its beginning, the natural change in colors in a year was studied. After this, the annual changes in these were seen in two decades. Dutkiewicz’s nearly four-year-old model was used to understand the contribution of climate change to these changes. In this the oceans are analyzed with and without greenhouse gases.