Parameterization of the Aerosol Indirect Climatic Effect: Observational and Modeling Approach

最近，在气溶胶化学、云微物理、辐射转移和气候模拟方面具有专业知识的实验员和建模人员发起了一个联合项目（气溶胶气候效应参数化，PACE），以解决气溶胶与云的相互作用问题，即气溶胶间接效应。PI建议将ACE-2野外活动数据与NASA GISS SCM模拟的云特性和辐射通量以及其他模型模拟的数据进行比较。目标是严格评估模式，并开发和测试更现实的方案，以便在气候模式中表示气溶胶-云-辐射相互作用。这项工作很重要，因为它将有助于缩小人为气溶胶间接影响的模式模拟中的大量不确定性，从而促进对全球和区域气候变化的更可靠预测。

A joint project (Parameterization of the Aerosol Climatic Effect, PACE) between experimentalists and modelers who have expertise in aerosol chemistry, cloud microphysics, radiative transfer and climate modeling has recently been initiated to address the issue of aerosol interaction with clouds, referred to the aerosol indirect effect. The PI proposes to compare ACE-2 field campaign data with cloud properties and radiative fluxes simulated by the NASA GISS SCM along with that simulated by other models. The objectives are to rigorously assess the models and develop and test more realistic schemes for representing aerosol-cloud-radiation interactions in climate models. The work is important because it will contribute to narrowing the large range of uncertainty in model simulations of the indirect effects of anthropogenic aerosols, thereby facilitating more reliable predictions of global and regional climatic change.