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It's worse than we thought. Scientists may have hugely underestimated the extent of global warming because temperature readings from southern hemisphere seas were inaccurate.
Comparisons of direct measurements with satellite data and climate models suggest that the oceans of the southern hemisphere have been sucking up more than twice as much of the heat trapped by our excess greenhouse gases than previously calculated. This means we may have underestimated the extent to which our world has been warming.
Paul Durack from the Lawrence Livermore National Laboratory in California in the US and colleagues have compared direct and inferred sea temperature measurements with the results of climate models. While these three types of measurements together suggest that our estimates of northern hemisphere ocean warming are about right, a different story emerged for down south.
The team estimate that the extent of warming in the southern hemisphere oceans since 1970 could be more than twice what has been inferred from the limited direct measurements we have for this region. This means that together, all the world's oceans are absorbing between 24 and 58 per cent more energy than has previously been estimated by direct in-situ measurements.
because temperature readings from southern hemisphere seas were inaccurate.
Not one word on how they did their monitoring.
Paul Durack from the Lawrence Livermore National Laboratory in California in the US and colleagues have compared direct and inferred sea temperature measurements with the results of climate models. While these three types of measurements together suggest that our estimates of northern hemisphere ocean warming are about right, a different story emerged for down south.
Cai says that, during that time, while the northern hemisphere has been well sampled by cargo ships and projects led by wealthy countries north of the equator, very few direct measurements have been taken in the south. So it's not surprising that the in-situ measurements have been wrong.
Since around 2000, a network of buoys called the Argo floats have been collecting more accurate global ocean data, so more recent measurements of the southern hemisphere are more reliable.
originally posted by: Mianeye
a reply to: Snarl
Not one word on how they did their monitoring.
Or you didn't read the article.
Paul Durack from the Lawrence Livermore National Laboratory in California in the US and colleagues have compared direct and inferred sea temperature measurements with the results of climate models. While these three types of measurements together suggest that our estimates of northern hemisphere ocean warming are about right, a different story emerged for down south.
Cai says that, during that time, while the northern hemisphere has been well sampled by cargo ships and projects led by wealthy countries north of the equator, very few direct measurements have been taken in the south. So it's not surprising that the in-situ measurements have been wrong.
Would you kindly point out how those measurements were derived?
Im looking for hard scientific consistency
This means that together, all the world's oceans are absorbing between 24 and 58 per cent more energy than has previously been estimated by direct in-situ measurements.