Parameterization and Analysis of 3-D Solar Radiative Transfer in Clouds: Final Report

doi:10.2172/1051250

GSTDTAP > 地球科学

DOI	10.2172/1051250
报告编号	DOE/ER/64570
来源ID	OSTI ID: 1051250
	Parameterization and Analysis of 3-D Solar Radiative Transfer in Clouds: Final Report
	Jerry Y. Harrington
	2012-09-21
出版年	2012
语种	英语
国家	美国
领域	地球科学
英文摘要	This document reports on the research that we have done over the course of our two-year project. The report also covers the research done on this project during a 1 year no-cost extension of the grant. Our work has had two main, inter-related thrusts: The first thrust was to characterize the response of stratocumulus cloud structure and dynamics to systematic changes in cloud infrared radiative cooling and solar heating using one-dimensional radiative transfer models. The second was to couple a three-dimensional (3-D) solar radiative transfer model to the Large Eddy Simulation (LES) model that we use to simulate stratocumulus. The purpose of the studies with 3-D radiative transfer was to examine the possible influences of 3-D photon transport on the structure, evolution, and radiative properties of stratocumulus. While 3-D radiative transport has been examined in static cloud environments, few studies have attempted to examine whether the 3-D nature of radiative absorption and emission influence the structure and evolution of stratocumulus. We undertook this dual approach because only a small number of LES simulations with the 3-D radiative transfer model are possible due to the high computational costs. Consequently, LES simulations with a 1-D radiative transfer solver were used in order to examine the portions of stratocumulus parameter space that may be most sensitive to perturbations in the radiative fields. The goal was then to explore these sensitive regions with LES using full 3-D radiative transfer. Our overall goal was to discover whether 3-D radiative processes alter cloud structure and evolution, and whether this may have any indirect implications for cloud radiative properties. In addition, we collaborated with Dr. Tamas Varni, providing model output fields for his attempt at parameterizing 3-D radiative effects for cloud 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/5818
专题	地球科学
推荐引用方式 GB/T 7714	Jerry Y. Harrington. Parameterization and Analysis of 3-D Solar Radiative Transfer in Clouds: Final Report,2012.