Northeast News – Climate Change | Tropical Indian Ocean warming rapidly in recent decades

by Guwahati_City


Guwahati: The Ministry of Earth Sciences recently published an assessment report on the climate change impact on the Indian region, which includes the impact of climate change on oceans.

Based on scientific studies and the recent climate assessment report of the Ministry of Earth Sciences, the tropical Indian Ocean is warming rapidly over the recent decades.

The average basin-wide sea surface temperature (SST) is warming at a rate of 0.15 oC/decade during 1951-2015. During the same period, globally averaged SST warmed at a rate of ~0.11 oC.

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Owing to this rapid warming, the sea level in the Indian Ocean was observed to be rising at a rate of 1.06-1.75 mm/year during the last century (1874–2004) and ~3.3 mm/year in the recent decades (1993-2015), which is in a similar range of the global mean sea level rise.

Further, the National Centre for Coastal Research (NCCR), an attached office of MoES, is collecting real-time information on coastal water quality by deploying water quality buoys at 10m water depth in coastal waters. NCCR is also undertaking research activities in quantifying litter (mainly meso, macro and microplastics) on the beach, in the water column and sediment on the sea floor.

An increase in the abundance of microplastics is observed along the east coast during the monsoon. The stations nearer to the river mouth had higher numbers of microplastic concentrations. The Beach litter survey revealed that the maximum accumulation occurs on the backshore than in the intertidal zone.

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Moreover, Urban beaches have higher accumulation rates than rural beaches. Under the Beach Clean-up program/activity, it was found that the majority of the waste composition was contributed by single-use plastics.

No such report has been released by the recent UN Conference that the world’s seas are in crisis.

This information was given by the Minister of State (I/C) for M/o Earth Sciences and M/o Science & Technology, Jitendra Singh in a written reply in Lok Sabha.





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