Thursday, January 05, 2017

Oceans warming at greater rate than thought : study

New research has found the Earth's oceans are warming at a greater rate than previously thought.

The study casts doubt on earlier theories that there may be a pause in global warming.

Researchers in the US, UK and Canada are basing their claims on independent measurements of sea surface temperatures from floating buoys, Argo floats, and satellites in the last two decades.

Sea surface temperatures are considered an indicator of climate change and measurements over many decades have shown a clear trend towards warming.

However, in the past two decades, some research had suggested there had been a pause in the temperature rises - claims which some climate change sceptics had seized upon as potential evidence that human activities were not causing alterations in the global climate.

Sea surface temperature is measured using a variety of different techniques, including buoys and ships.

Scientists had considered buoys to be more accurate because they are in constant direct contact with the sea surface.

As a result, the use of ships to gather sea surface temperature readings has waned.

Another difficulty is that the data gathered by ships is slightly different from that produced by buoys, making it harder to integrate the two.

In 2015, the US National Oceanic and Atmospheric Administration (NOAA) revised its analysis and prediction of sea surface temperatures.

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