Constraining Uncertainty in Aerosol Direct Forcing

Constraining Uncertainty in Aerosol Direct Forcing
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限制气溶胶直接强迫的不确定性

DOI:
10.1029/2020gl087141
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发表时间:
2020
影响因子:
5.2
通讯作者:
Watson-Parris D
Watson-Parris D
中科院分区:
地球科学1区
文献类型:
--
作者:
Watson-Parris D

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当今人为强迫的不确定性主要是气溶胶贡献强度的不确定性。直接气溶胶强迫的不确定性很大程度上可以归因于由于缺乏历史观测,当今大气中人为气溶胶比例的不确定性。在这里,我们给出了三个多模式集合和一个大的单模型扰动参数集合的现代气溶胶总光学厚度和人为贡献之间的一个强有力的关系。利用对气溶胶光学厚度的观测,我们确定了减少的人为成分的可能范围,从而减少了气溶胶的直接强迫的不确定性。
The uncertainty in present‐day anthropogenic forcing is dominated by uncertainty in the strength of the contribution from aerosol. Much of the uncertainty in the direct aerosol forcing can be attributed to uncertainty in the anthropogenic fraction of aerosol in the present‐day atmosphere, due to a lack of historical observations. Here, we present a robust relationship between total present‐day aerosol optical depth and the anthropogenic contribution across three multimodel ensembles and a large single‐model perturbed parameter ensemble. Using observations of aerosol optical depth, we determine a reduced likely range of the anthropogenic component and hence a reduced uncertainty in the direct forcing of aerosol.
气溶胶模型不确定性与辐射强迫不确定性的关系
DOI: 10.1073/pnas.1507050113
发表时间: 2016
期刊: Proceedings of the National Academy of Sciences
影响因子: --
作者:
Lindsay A. Lee;C. Reddington;K. Carslaw
通讯作者: K. Carslaw