SGER: A New Shortwave Radiation Parameterization for the Community Climate System Model (CCSM) Sea Ice Model

该奖项支持为社区气候系统模式(CCSM)海冰部分开发一种新的短波辐射参数化。该参数的设计将增加短波辐射及其与雪和海冰相互作用的处理的准确性、一致性和通用性。新的参数化将使用双流辐射传输模型，该模型明确地考虑多次散射，并采用物理上真实的雪和海冰的固有光学性质。这种方法简单、有效，与CCSM大气成分中短波辐射的处理是一致的。更广泛的影响：预计这一参数化将改进CCSM海冰模型模拟，并将提高气候科学家定量评估气候中的冰-反照率反馈机制的能力。这些改进有可能大大提高CCSM模型的适用性以及与气候和气候变化有关的科学。这项研究还有可能产生与更知情的与气候变化有关的环境政策决策相关的更好的科学信息。

This award supports the development of a new shortwave radiation parameterization for the Community Climate System Model (CCSM) sea ice component. The parameterization will be designed to increase the accuracy, consistency, and generality of the treatment of shortwave radiation and its interactions with snow and sea ice. The new parameterization will use a two-stream radiative transfer model that explicitly accounts for multiple scattering and employs physically realistic inherent optical properties for snow and sea ice. This approach is simple, efficient, and consistent with the treatment of shortwave radiation in the atmospheric component of CCSM. Broader Impacts: It is anticipated that this parameterization will result in improvements in CCSM sea ice model simulations and will increase climate scientists' ability to quantitatively assess the ice-albedo feedback mechanism in climate. Such improvements have the potential to substantially enhance the applicability of the CCSM model and the science related to climate and climate change. This research also has the potential to produce improved scientific information relevant to better-informed environmental policy decisions related to climate change.