David G. Victor and Charles F. Kennel
01 October 2014
Average global temperature is not a good indicator of
planetary health. Track a range of vital signs instead, urge David G. Victor
and Charles F. Kennel.
planetary health. Track a range of vital signs instead, urge David G. Victor
and Charles F. Kennel.
For nearly a decade, international diplomacy has focused on
stopping global warming at 2 °C above pre-industrial levels. This goal — bold
and easy to grasp — has been accepted uncritically and has proved influential.
stopping global warming at 2 °C above pre-industrial levels. This goal — bold
and easy to grasp — has been accepted uncritically and has proved influential.
Bold simplicity must now face reality. Politically and
scientifically, the 2 °C goal is wrong-headed…
scientifically, the 2 °C goal is wrong-headed…
…New goals are needed. It is time to track an array of
planetary vital signs — such as changes in the ocean heat content — that are
better rooted in the scientific understanding of climate drivers and risks.
Targets must also be set in terms of the many individual gases emitted by human
activities and policies to mitigate those emissions.
planetary vital signs — such as changes in the ocean heat content — that are
better rooted in the scientific understanding of climate drivers and risks.
Targets must also be set in terms of the many individual gases emitted by human
activities and policies to mitigate those emissions.
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