EAGER: Development of a Bulk-Emulating Microphysics Scheme

GSTDTAP

项目编号	1940035
	EAGER: Development of a Bulk-Emulating Microphysics Scheme
	Adele Igel (Principal Investigator)
主持机构	University of California-Davis
项目开始年	2019
	2019-09-01
项目结束日期	2020-08-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	137579(USD)
国家	美国
语种	英语
英文摘要	Numerical weather and climate models use cloud microphysical schemes to represent how a large collection of cloud particles grow, interact, and decay. Explicitly modeling the full characteristics of a cloud, such as the distribution of different particle sizes, is not computationally feasible for most purposes, so researchers have devised schemes that can accurately represent certain quantities that are important for the models. However, there are some processes that depend greatly on aspects such as the particle size distribution, so having an improved understanding of the differences between the two approaches would be useful to identify problems. This work will create a cloud scheme that is based upon explicit cloud modeling but is comparable to the less computationally advanced schemes so that direct comparisons can be conducted. The main societal impact would be the downstream effect on weather and climate models. The project also provides training for a graduate student. This project aims to develop a bulk-emulating microphysics scheme. There are two common classes of microphysics schemes, the bin scheme where the particle size distribution is explicitly predicted, and the bulk scheme where 1-3 integral quantities of the particle size distribution are predicted. Bin schemes are computationally expensive and not feasible for use in global climate models. However, it has been recently suggested by the scientific community that bulk schemes are incapable of properly representing aerosol-cloud interactions. This project will develop a tool and method for testing the conceptual and numerical limitations of bulk microphysics schemes with an end goal of informing the community how new schemes should be designed in the future. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/214338
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Adele Igel .EAGER: Development of a Bulk-Emulating Microphysics Scheme.2019.