Warming set to breach 1C threshold

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Source: BBC

Global temperatures are set to rise more than one degree above pre-industrial levels according to the UK’s Met Office.

Figures from January to September this year are already 1.02C above the average between 1850 and 1900.

If temperatures remain as predicted, 2015 will be the first year to breach this key threshold.

The world would then be half way towards 2C, the gateway to dangerous warming.

The new data is certain to add urgency to political negotiations in Paris later this month aimed at securing a new global climate treaty.

Difficult to measure

For researchers, confusion about the true level of temperatures in the 1750s, when the industrial revolution began and fossil fuels became widely used, means that an accurate assessment of the amount the world has warmed since then is very difficult.

To get over this problem, the Met Office use an average of the temperatures recorded between 1850 and 1900, which they argue makes their analysis more accurate.

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