London: The world is halfway towards the threshold that could result in dangerous climate change, scientists have warned, after revealing that average global temperatures have recorded a rise of one degree Celsius for the first time.
Record warm temperatures measured in the first nine months of this year mean that the world has already reached the halfway point towards the arbitrary “threshold” of a 2C increase on pre-industrial levels judged to be potentially dangerous for climate change, the Met Office said.
The world is heading towards uncharted territory at “frightening speed” according to the World Meteorological Organisation (WMO). Global average temperatures broke through the 1C barrier as the concentration of man-made greenhouse gases in the atmosphere reached another new record, the climate scientists said.
Latest figures on greenhouse gas concentrations show that levels of carbon dioxide, methane and nitrous oxide from industrial, agricultural and domestic activities reached record levels – with global average concentrations of carbon dioxide in spring 2015 crossing the 400 parts per million barrier for the first time.
Scientists say warming by 2100 must be kept below 2 degrees to stave off the worst effects of climate change such as floods, droughts and rising sea levels.