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题名: Effects of atmospheric dynamics and aerosols on the fraction of supercooled water clouds
作者: Li, JM; Lv, QY; Zhang, M; Wang, TH; Kawamoto, K; Chen, SY; Zhang, BD
收录类别: SCIE
出版日期: 2017-02-08
刊名: ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号: 17, 期号:1-3, 页码:1847-1863
出版者: COPERNICUS GESELLSCHAFT MBH
出版地: GOTTINGEN
英文摘要: Based on 8 years of (January 2008-December 2015) cloud phase information from the GCM-Oriented Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Cloud Product (GOCCP), aerosol products from CALIPSO and meteorological parameters from the ERA-Interim products, the present study investigates the effects of atmospheric dynamics on the supercooled liquid cloud fraction (SCF) during nighttime under different aerosol loadings at global scale to better understand the conditions of supercooled liquid water gradually transforming to ice phase. Statistical results indicate that aerosols' effect on nucleation cannot fully explain all SCF changes, especially in those regions where aerosols' effect on nucleation is not a first-order influence (e.g., due to low ice nuclei aerosol frequency). By performing the temporal and spatial correlations between SCFs and different meteorological factors, this study presents specifically the relationship between SCF and different meteorological parameters under different aerosol loadings on a global scale. We find that the SCFs almost decrease with increasing of aerosol loading, and the SCF variation is closely related to the meteorological parameters but their temporal relationship is not stable and varies with the different regions, seasons and isotherm levels. Obviously negative temporal correlations between SCFs versus vertical velocity and relative humidity indicate that the higher vertical velocity and relative humidity the smaller SCFs. However, the patterns of temporal correlation for lower-tropospheric static stability, skin temperature and horizontal wind are relatively more complex than those of vertical velocity and humidity. For example, their close correlations are predominantly located in middle and high latitudes and vary with latitude or surface type. Although these statistical correlations have not been used to establish a certain causal relationship, our results may provide a unique point of view on the phase change of mixed-phase cloud and have potential implications for further improving the parameterization of the cloud phase and determining the climate feedbacks.
作者部门: [Li, Jiming ; Lv, Qiaoyi ; Zhang, Min ; Wang, Tianhe ; Chen, Siyu ; Zhang, Beidou] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Peoples R China ; [Kawamoto, Kazuaki] Nagasaki Univ, Grad Sch Fisheries Sci & Environm Studies, Nagasaki, Japan
通讯作者: Li, JM (reprint author), Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Peoples R China.
学科分类: Meteorology & Atmospheric Sciences
文章类型: Article
所属项目编号: National Natural Science Foundation of China [41430425] ; Foundation for Innovative Research Groups of the National Science Foundation of China [41521004] ; National Science Foundation of China [41575015, 41305027, 41375031] ; China 111 project [B13045]
所属项目名称: 国家自然科学基金项目 ; 高等学校学科创新引智计划(111计划)
项目资助者: NSFC ; MOE ; SAFEA
语种: 英语
DOI: 10.5194/acp-17-1847-2017
ISSN号: 1680-7316
WOS记录号: WOS:000395126900001
IR记录号: WOS:000395126900001
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189557
Appears in Collections:大气科学学院_期刊论文

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Recommended Citation:
Li, JM,Lv, QY,Zhang, M,et al. Effects of atmospheric dynamics and aerosols on the fraction of supercooled water clouds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(1-3):1847-1863.
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