气候变化领域集成服务门户(CCPortal): The Impact of Rimed Ice Hydrometeors on Global and Regional Climate

CCPortal

DOI	10.1029/2018MS001488
	The Impact of Rimed Ice Hydrometeors on Global and Regional Climate
	Gettelman A.; Morrison H.; Thayer-Calder K.; Zarzycki C.M.
发表日期	2019
ISSN	19422466
起始页码	1543
结束页码	1562
卷号	11 期号:6
英文摘要	Rimed hydrometeors (graupel or hail) are added to a stratiform cloud scheme for global models and tested in a variety of configurations. Off-line tests compare well to other cloud microphysics schemes with rimed ice used in mesoscale models. Tests in single column and climate mode show expected production of small amounts of rimed ice in the middle troposphere and at high latitudes. The overall climate impacts of rimed ice (hail or graupel) at 100-km horizontal grid spacing are small. There are some changes to partitioning between cloud ice and snow that affect upper troposphere water budgets and clouds. High-resolution simulations are conducted with a global but regionally refined grid at 14 km over the Contiguous United States. High-resolution simulations show local production of graupel with realistic size and number concentrations. The maximum graupel frequency at high resolution is over Western U.S. mountain ranges. Differences in total precipitation with the addition of rimed ice in 8-year simulations are statistically significant only for orographic precipitation over the Cascade and Rocky mountains, reducing model biases when rimed ice is included. Rimed ice slightly improves summer precipitation intensity relative to observations. Thus, while the global climate impact of rimed ice in stratiform clouds may be negligible, there are potentially important and systematic regional effects, particularly for orographic precipitation. Rimed ice in cumulus clouds is not yet treated but is an important next step. ©2019. The Authors.
英文关键词	climate; clouds; graupel; hail; microphysics
语种	英语
scopus关键词	Budget control; Clouds; Precipitation (meteorology); Troposphere; climate; Global climate impact; graupel; High resolution simulations; Horizontal grid spacing; Microphysics; Number concentration; Orographic precipitation; Ice; climate effect; cloud microphysics; global climate; hail; precipitation (climatology); precipitation intensity; regional climate; stratiform cloud; troposphere; Cascade Range; Rocky Mountains; United States
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156903
作者单位	National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Gettelman A.,Morrison H.,Thayer-Calder K.,et al. The Impact of Rimed Ice Hydrometeors on Global and Regional Climate[J],2019,11(6).
APA	Gettelman A.,Morrison H.,Thayer-Calder K.,&Zarzycki C.M..(2019).The Impact of Rimed Ice Hydrometeors on Global and Regional Climate.Journal of Advances in Modeling Earth Systems,11(6).
MLA	Gettelman A.,et al."The Impact of Rimed Ice Hydrometeors on Global and Regional Climate".Journal of Advances in Modeling Earth Systems 11.6(2019).