Surfactant effects in global simulations of cloud droplet activation
Surfactant effects in global simulations of cloud droplet activation
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DOI：
10.1029/2011gl050467
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发表时间：
2012-03-02
影响因子：
5.2
通讯作者：
Kokkola, H.
中科院分区：
文献类型：
--
作者：
Prisle, N. L.;Asmi, A.;Kokkola, H.
大气气溶胶通常含有表面活性有机物。我们研究了这些表面活性剂的颗粒云激活潜力和气溶胶间接气候效应的预测的影响，通过实施不同的参数化的表面活性剂的影响，在全球环流模式ECHAM5.5-HAM 2。仅基于液滴表面张力降低的参数化产生显着更大的影响预测云滴数比新的参数化的基础上详细考虑有机表面活性。它似乎更好地忽略表面活性剂的影响，而不是采用参数化只占表面张力的影响。我们强烈建议不要仅仅使用表面张力降低来代表气候模型中的表面活性剂效应。引文：Prisle，N. L.，等人（2012），全球云滴激活模拟中的表面活性剂效应，Geophys.保留信函：39，L05802，doi：10.1029/2011GL050467。
Atmospheric aerosols often contain surface active organics. We study the influence of these surfactants on predictions of particle cloud activation potential and aerosol indirect climate effects, by implementing different parametrizations of surfactant effects in the global circulation model ECHAM5.5-HAM2. A parametrization based only on droplet surface tension reduction produces significantly larger effects on predicted cloud droplet numbers than novel parametrizations based on detailed considerations of organic surface activity. It seems better to disregard surfactant effects altogether than employing parametrizations accounting only for effects on surface tension. We strongly recommend not using only the surface tension reduction to represent the surfactant effects in climate models. Citation: Prisle, N. L., et al. (2012), Surfactant effects in global simulations of cloud droplet activation, Geophys. Res. Lett., 39, L05802, doi:10.1029/2011GL050467.