气候变化领域集成服务门户(CCPortal): Comparison of Antarctic polar stratospheric cloud observations by ground-based and space-borne lidar and relevance for chemistry-climate models

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DOI	10.5194/acp-19-955-2019
	Comparison of Antarctic polar stratospheric cloud observations by ground-based and space-borne lidar and relevance for chemistry-climate models
	Snels M.; Scoccione A.; Di Liberto L.; Colao F.; Pitts M.; Poole L.; Deshler T.; Cairo F.; Cagnazzo C.; Fierli F.
发表日期	2019
ISSN	16807316
起始页码	955
结束页码	972
卷号	19 期号:2
英文摘要	A comparison of polar stratospheric cloud (PSC) occurrence from 2006 to 2010 is presented, as observed from the ground-based lidar station at McMurdo (Antarctica) and by the satellite-borne CALIOP lidar (Cloud-Aerosol Lidar with Orthogonal Polarization) measuring over McMurdo. McMurdo (Antarctica) is one of the primary lidar stations for aerosol measurements of the NDACC (Network for Detection of Atmospheric Climate Change). The ground-based observations have been classified with an algorithm derived from the recent v2 detection and classification scheme, used to classify PSCs observed by CALIOP. A statistical approach has been used to compare groundbased and satellite-based observations, since point-to-point comparison is often troublesome due to the intrinsic differences in the observation geometries and the imperfect overlap of the observed areas. A comparison of space-borne lidar observations and a selection of simulations obtained from chemistry-climate models (CCMs) has been made by using a series of quantitative diagnostics based on the statistical occurrence of different PSC types. The distribution of PSCs over Antarctica, calculated by several CCMVal-2 and CCMI chemistry-climate models has been compared with the PSC coverage observed by the satellite-borne CALIOP lidar. The use of several diagnostic tools, including the temperature dependence of the PSC occurrences, evidences the merits and flaws of the different models. The diagnostic methods have been defined to overcome (at least partially) the possible differences due to the resolution of the models and to identify differences due to microphysics (e.g., the dependence of PSC occurrence on T -TNAT). A significant temperature bias of most models has been observed, as well as a limited ability to reproduce the longitudinal variations in PSC occurrences observed by CALIOP. In particular, a strong temperature bias has been observed in CCMVal-2 models with a strong impact on PSC formation. The WACCM-CCMI (Whole Atmosphere Community Climate Model - Chemistry-Climate Model Initiative) model compares rather well with the CALIOP observations, although a temperature bias is still present. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; algorithm; CALIOP; climate modeling; comparative study; lidar; satellite data; stratosphere; Antarctica; East Antarctica; McMurdo Station
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/144696
作者单位	Istituto di Scienze dell'Atmosfera e Del Clima, Via Fosso del Cavaliere 100, Rome, 00133, Italy; ENEA, Via Enrico Fermi 45, Frascati, 00044, Italy; NASA Langley Research Center, Hampton, VA 23681, United States; Science Systems and Applications Inc., Hampton, VA 23666, United States; Dept. of Atmospheric Science, University of Wyoming, Laramie, WY 82071, United States
推荐引用方式 GB/T 7714	Snels M.,Scoccione A.,Di Liberto L.,et al. Comparison of Antarctic polar stratospheric cloud observations by ground-based and space-borne lidar and relevance for chemistry-climate models[J],2019,19(2).
APA	Snels M..,Scoccione A..,Di Liberto L..,Colao F..,Pitts M..,...&Fierli F..(2019).Comparison of Antarctic polar stratospheric cloud observations by ground-based and space-borne lidar and relevance for chemistry-climate models.Atmospheric Chemistry and Physics,19(2).
MLA	Snels M.,et al."Comparison of Antarctic polar stratospheric cloud observations by ground-based and space-borne lidar and relevance for chemistry-climate models".Atmospheric Chemistry and Physics 19.2(2019).