Oceans heating faster: study

• The recent Intergovernmental Panel on Climate Change’s Special Report had already alarmed the world about the rate at which the world is heating up.

• Researchers say, all oceans in the world are heating up 60 per cent faster than what IPCC had warned.

• The researchers say that the data on temperatures of oceans, which “are the main sources of thermal inertia in the climate system”, has gaps.

Key findings

• Scientists rely on robotic devices called Argo array, which float at different depths in all the oceans and come to the surface every 10 days to provide their readings to satellites.

• The fact is that 3,800 such devices are floating in oceans, they are not evenly divided. While some areas of the water bodies have many, some have too few.

• The IPCC had recommended a 20 per cent cut in climate emissions by 2030 and then finishing them completely by 2075 to keep global warming from exceeding 2 degrees Celsius above preindustrial levels.

• The Princeton researchers say that emission levels in the coming decades would need to be 25 per cent lower than IPCC recommendations.

• The ocean warmed more than we thought, and that has serious implications for future policy.

• This is definitely something that should and will be taken into account in the next report.

• The researchers also say that even if humanity manages to get emission levels to zero.

• The greenhouse gases it has already emitted will remain in the atmosphere for hundreds of years and keep warming up the planet.

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Mains Paper 1: Geography | Climate Change and changes in critical geographical features

Prelims level: Not Much

Mains level: Oceanic Warming

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