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UN Warns Global Temperatures Rise Beyond Critical Threshold
(MENAFN) Global temperatures are expected to move above 1.5C (2.7F) compared with pre-industrial levels within the coming years, according to a new assessment by the United Nations Environment Programme.
Despite the expected breach of the Paris Agreement’s temperature target, the report says the increase could eventually be reversed if countries make deep and rapid cuts to greenhouse gas emissions and maintain net-negative emissions for an extended period.
The assessment identifies an “overshoot, peak and decline” approach as the most effective pathway for limiting both the extent and duration of warming beyond 1.5C before bringing temperatures below the threshold again.
Under this strategy, countries would first seek to restrain the peak in global warming through major emissions reductions before gradually lowering temperatures through sustained removal of more greenhouse gases from the atmosphere than are emitted.
“There are no good outcomes if we remain above 1.5°C. Across the globe, extreme heatwaves are already proving that climate impacts will strike faster, hit harder, and last longer - costing more lives and causing deeper disruption,” UNEP Executive Director Inger Andersen said.
The report indicates that even the most favorable projected pathway would see global temperatures reach a peak of around 1.8C above pre-industrial levels, meaning the 1.5C objective would still be exceeded.
Other projected pathways foresee substantially higher temperature peaks, highlighting the growing risks associated with continued global warming.
Despite the expected breach of the Paris Agreement’s temperature target, the report says the increase could eventually be reversed if countries make deep and rapid cuts to greenhouse gas emissions and maintain net-negative emissions for an extended period.
The assessment identifies an “overshoot, peak and decline” approach as the most effective pathway for limiting both the extent and duration of warming beyond 1.5C before bringing temperatures below the threshold again.
Under this strategy, countries would first seek to restrain the peak in global warming through major emissions reductions before gradually lowering temperatures through sustained removal of more greenhouse gases from the atmosphere than are emitted.
“There are no good outcomes if we remain above 1.5°C. Across the globe, extreme heatwaves are already proving that climate impacts will strike faster, hit harder, and last longer - costing more lives and causing deeper disruption,” UNEP Executive Director Inger Andersen said.
The report indicates that even the most favorable projected pathway would see global temperatures reach a peak of around 1.8C above pre-industrial levels, meaning the 1.5C objective would still be exceeded.
Other projected pathways foresee substantially higher temperature peaks, highlighting the growing risks associated with continued global warming.
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