Indian Ocean takes a bite of climate change


A team of scientists from Indian Institute of Tropical Meteorology has claimed in a recent study that global warming is destroying the marine population in the Indian ocean.

Using satellite data and climate models based on past data, the scientists have concluded that Indian Ocean has lost nearly 30 percent of its phytoplankton cover in only sixteen years. The scientists explained that global warming has caused surface water to be considerably less dense than water on the subsurface, blocking the vertical mixing of nutrients from the lower to upper layers. Phytoplanktons on the surface are thus unable to access sufficient nutrients to survive at the top and carry out photosynthesis.

The loss of phytoplanktons in turn affects the entire marine ecosystem as the loss gets amplified throughout the food web. Phytoplanktons moderate the temperature of ocean surfaces by absorbing solar radiations and play an essential role in climate processes like the carbon cycle.

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