Drivers of Continued Surface Warming After Cessation of Carbon Emissions

Drivers of Continued Surface Warming After Cessation of Carbon Emissions
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碳排放停止后地表持续变暖的驱动因素

DOI:
10.1002/2017gl075080
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发表时间:
2017
影响因子:
5.2
通讯作者:
Williams R
Williams R
中科院分区:
地球科学1区
文献类型:
--
作者:
Williams R

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停止碳排放后的气候响应在这里进行检查,利用一个单一的方程连接表面变暖累积的碳排放。通过诊断地球系统模型(地球物理流体动力学实验室ESM 2 M)和有效地球系统模型模拟的集合的1,000年集成,考虑了对理想化碳脉冲的数百年响应。在排放停止后,表面温度的变化取决于(i)有多少排放的碳留在大气中,以及(ii)有多少额外的辐射强迫使表面而不是海洋内部变暖。在碳排放停止后,由于海洋热量吸收的减少,表面温度的峰值被推迟,这反过来又增加了使表面变暖的辐射强迫的比例。最终,经过许多世纪,地表温度下降,因为海洋和陆地吸收了过量的大气CO2,从而减少了辐射强迫。
The climate response after cessation of carbon emissions is examined here, exploiting a single equation connecting surface warming to cumulative carbon emissions. The multicentennial response to an idealized pulse of carbon is considered by diagnosing a 1,000 year integration of an Earth system model (Geophysical Fluid Dynamics Laboratory ESM2M) and an ensemble of efficient Earth system model simulations. After emissions cease, surface temperature evolves according to (i) how much of the emitted carbon remains in the atmosphere and (ii) how much of the additional radiative forcing warms the surface rather than the ocean interior. The peak in surface temperature is delayed in time after carbon emissions cease through the decline in ocean heat uptake, which in turn increases the proportion of radiative forcing warming the surface. Eventually, after many centuries, surface temperature declines as the radiative forcing decreases through the excess atmospheric CO2being taken up by the ocean and land.
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