气候变化领域集成服务门户(CCPortal): Methodology to determine the coupling of continental clouds with surface and boundary layer height under cloudy conditions from lidar and meteorological data

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DOI	10.5194/acp-22-1453-2022
	Methodology to determine the coupling of continental clouds with surface and boundary layer height under cloudy conditions from lidar and meteorological data
	Su, Tianning; Zheng, Youtong; Li, Zhanqing
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	1453
结束页码	1466
卷号	22 期号:2 页码:14
英文摘要	The states of coupling between clouds and surface or boundary layer have been investigated much more extensively for marine stratocumulus clouds than for continental low clouds, partly due to more complex thermodynamic structures over land. A manifestation is a lack of robust remote sensing methods to identify coupled and decoupled clouds over land. Following the idea for determining cloud coupling over the ocean, we have generalized the concept of coupling and decoupling to low clouds over land, based on potential temperature profiles. Furthermore, by using ample measurements from lidar and a suite of surface meteorological instruments at the U.S. Department of Energy's Atmospheric Radiation Measurement Program's Southern Great Plains site from 1998 to 2019, we have developed a method to simultaneously retrieve the planetary boundary layer (PBL) height (PBLH) and coupled states under cloudy conditions during the daytime. The new lidar-based method relies on the PBLH, the lifted condensation level, and the cloud base to diagnose the cloud coupling. The coupled states derived from this method are highly consistent with those derived from radiosondes. Retrieving the PBLH under cloudy conditions, which has been a persistent problem in lidar remote sensing, is resolved in this study. Our method can lead to high-quality retrievals of the PBLH under cloudy conditions and the determination of cloud coupling states. With the new method, we find that coupled clouds are sensitive to changes in the PBL with a strong diurnal cycle, whereas decoupled clouds and the PBL are weakly related. Since coupled and decoupled clouds have distinct features, our new method offers an advanced tool to separately investigate them in climate systems.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000751071600001
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/273054
作者单位	University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park; National Oceanic Atmospheric Admin (NOAA) - USA; Princeton University; National Oceanic Atmospheric Admin (NOAA) - USA
推荐引用方式 GB/T 7714	Su, Tianning,Zheng, Youtong,Li, Zhanqing. Methodology to determine the coupling of continental clouds with surface and boundary layer height under cloudy conditions from lidar and meteorological data[J],2022,22(2):14.
APA	Su, Tianning,Zheng, Youtong,&Li, Zhanqing.(2022).Methodology to determine the coupling of continental clouds with surface and boundary layer height under cloudy conditions from lidar and meteorological data.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(2),14.
MLA	Su, Tianning,et al."Methodology to determine the coupling of continental clouds with surface and boundary layer height under cloudy conditions from lidar and meteorological data".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.2(2022):14.