Eemian and Holocene Climates

Science Matters

Hansen is publishing a new paper in support of the children suing the government for not fighting climate change. In it he claims temps now are higher than the Holocene and matching the Eemian, so we should expect comparable sea levels.

Paper is here:
http://www.earth-syst-dynam.net/8/577/2017/

Abstract. Global temperature is a fundamental climate metric highly correlated with sea level, which implies that keeping shorelines near their present location requires keeping global temperature within or close to its preindustrial Holocene range. However, global temperature excluding short-term variability now exceeds +1 °C relative to the 1880–1920 mean and annual 2016 global temperature was almost +1.3 °C. We show that global temperature has risen well out of the Holocene range and Earth is now as warm as it was during the prior (Eemian) interglacial period, when sea level reached 6–9 m higher than today. Further, Earth is out of energy balance with present atmospheric composition, implying…

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