Enhancement of non-CO2 radiative forcing via intensified carbon cycle feedbacks
Enhancement of non-CO2 radiative forcing via intensified carbon cycle feedbacks
复制标题
DOI：
10.1002/2016gl068964
复制
发表时间：
2016-06-16
影响因子：
5.2
通讯作者：
Knutti, Reto
中科院分区：
文献类型：
--
作者：
MacDougall, Andrew H.;Knutti, Reto
全球碳循环对全球气温和大气CO2浓度的变化很敏感，气温升高会降低碳汇效率，而CO2浓度升高会提高碳汇效率。非二氧化碳温室气体的排放使地球变暖，但不会引起二氧化碳施肥效应或增加大气与海洋表面之间的分压梯度。在这里，我们提出了理想化的气候模式实验，探索非CO2强迫和碳循环之间的间接相互作用。实验表明，这种相互作用增强了非CO2强迫的变暖效应高达25%，150年后，这些代理人所造成的变暖的大部分徘徊超过100年后，消散的非CO2强迫。总的来说，我们的研究结果表明，非CO2强迫剂的排放持续时间越长，这些因子对全球气候的影响就越大。
The global carbon cycle is sensitive to changes in global temperature and atmospheric CO2 concentration, with increased temperature tending to reduce the efficiency of carbon sinks and increased CO2 enhancing the efficiency of carbon sinks. The emission of non-CO2 greenhouse gases warms the Earth but does not induce the CO2 fertilization effect or increase the partial-pressure gradient between the atmosphere and the surface ocean. Here we present idealized climate model experiments that explore the indirect interaction between non-CO2 forcing and the carbon cycle. The experiments suggest that this interaction enhances the warming effect of the non-CO2 forcing by up to 25% after 150 years and that much of the warming caused by these agents lingers for over 100 years after the dissipation of the non-CO2 forcing. Overall, our results suggest that the longer emissions of non-CO2 forcing agents persists the greater effect these agents will have on global climate.