气候变化领域集成服务门户(CCPortal): Processes controlling the vertical aerosol distribution in marine stratocumulus regions-a sensitivity study using the climate model NorESM1-M

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DOI	10.5194/acp-21-577-2021
	Processes controlling the vertical aerosol distribution in marine stratocumulus regions-a sensitivity study using the climate model NorESM1-M
	Frey L.; Bender F.A.-M.; Svensson G.
发表日期	2021
ISSN	1680-7316
起始页码	577
结束页码	595
卷号	21 期号:1
英文摘要	The vertical distribution of aerosols plays an important role in determining the effective radiative forcing from aerosol-radiation and aerosol-cloud interactions. Here, a number of processes controlling the vertical distribution of aerosol in five subtropical marine stratocumulus regions in the climate model NorESM1-M are investigated, with a focus on the total aerosol extinction. A comparison with satellite lidar data (CALIOP, Cloud-Aerosol Lidar with Orthogonal Polarization) shows that the model underestimates aerosol extinction throughout the troposphere, especially elevated aerosol layers in the two regions where they are seen in observations. It is found that the shape of the vertical aerosol distribution is largely determined by the aerosol emission and removal processes in the model, primarily through the injection height, emitted particle size, and wet scavenging. In addition, the representation of vertical transport related to shallow convection and entrainment is found to be important, whereas alterations in aerosol optical properties and cloud microphysics parameterizations have smaller effects on the vertical aerosol extinction distribution. However, none of the alterations made are sufficient for reproducing the observed vertical distribution of aerosol extinction, neither in magnitude nor in shape. Interpolating the vertical levels of CALIOP to the corresponding model levels leads to better agreement in the boundary layer and highlights the importance of the vertical resolution. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	aerosol; CALIOP; climate modeling; marine atmosphere; optical property; radiative forcing; spatial distribution; stratocumulus; troposphere
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247225
作者单位	Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
推荐引用方式 GB/T 7714	Frey L.,Bender F.A.-M.,Svensson G.. Processes controlling the vertical aerosol distribution in marine stratocumulus regions-a sensitivity study using the climate model NorESM1-M[J],2021,21(1).
APA	Frey L.,Bender F.A.-M.,&Svensson G..(2021).Processes controlling the vertical aerosol distribution in marine stratocumulus regions-a sensitivity study using the climate model NorESM1-M.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(1).
MLA	Frey L.,et al."Processes controlling the vertical aerosol distribution in marine stratocumulus regions-a sensitivity study using the climate model NorESM1-M".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.1(2021).