Application of Improved Radiation Modeling to General Circulation Models

doi:10.2172/1010861

GSTDTAP > 地球科学

DOI	10.2172/1010861
报告编号	DOE/ER61549-1
来源ID	OSTI ID: 1010861
	Application of Improved Radiation Modeling to General Circulation Models
	Williams, Dean N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)]
	2011-04-07
出版年	2011
语种	英语
国家	美国
领域	地球科学
英文摘要	This research has accomplished its primary objectives of developing accurate and efficient radiation codes, validating them with measurements and higher resolution models, and providing these advancements to the global modeling community to enhance the treatment of cloud and radiative processes in weather and climate prediction models. A critical component of this research has been the development of the longwave and shortwave broadband radiative transfer code for general circulation model (GCM) applications, RRTMG, which is based on the single-column reference code, RRTM, also developed at AER. RRTMG is a rigorously tested radiation model that retains a considerable level of accuracy relative to higher resolution models and measurements despite the performance enhancements that have made it possible to apply this radiation code successfully to global dynamical models. This model includes the radiative effects of all significant atmospheric gases, and it treats the absorption and scattering from liquid and ice clouds and aerosols. RRTMG also includes a statistical technique for representing small-scale cloud variability, such as cloud fraction and the vertical overlap of clouds, which has been shown to improve cloud radiative forcing in global models. This development approach has provided a direct link from observations to the enhanced radiative transfer provided by RRTMG for application to GCMs. Recent comparison of existing climate model radiation codes with high resolution models has documented the improved radiative forcing capability provided by RRTMG, especially at the surface, relative to other GCM radiation models. Due to its high accuracy, its connection to observations, and its computational efficiency, RRTMG has been implemented operationally in many national and international dynamical models to provide validated radiative transfer for improving weather forecasts and enhancing the prediction of global climate change.
英文关键词	radiation radiative transfer climate modeling general circulation models
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5175
专题	地球科学
推荐引用方式 GB/T 7714	Williams, Dean N. [Lawrence Livermore National Lab. . Application of Improved Radiation Modeling to General Circulation Models,2011.