Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-7709-2018 |
How much of the global aerosol optical depth is found in the boundary layer and free troposphere? | |
Bourgeois, Quentin1,2,7; Ekman, Annica M. L.1,2; Renard, Jean-Baptiste3; Krejci, Radovan2,4; Devasthale, Abhay5; Bender, Frida A. -M.1,2; Riipinen, Ilona2,4; Berthet, Gwenael3; Tackett, Jason L.6 | |
2018-06-01 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:10页码:7709-7720 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; France; USA; Switzerland |
英文摘要 | The global aerosol extinction from the CALIOP space lidar was used to compute aerosol optical depth (AOD) over a 9-year period (2007-2015) and partitioned between the boundary layer (BL) and the free troposphere (FT) using BL heights obtained from the ERA-Interim archive. The results show that the vertical distribution of AOD does not follow the diurnal cycle of the BL but remains similar between day and night highlighting the presence of a residual layer during night. The BL and FT contribute 69 and 31 %, respectively, to the global tropospheric AOD during daytime in line with observations obtained in Aire sur l'Adour (France) using the Light Optical Aerosol Counter (LOAC) instrument. The FT AOD contribution is larger in the tropics than at mid-latitudes which indicates that convective transport largely controls the vertical profile of aerosols. Over oceans, the FT AOD contribution is mainly governed by long-range transport of aerosols from emission sources located within neighboring continents. According to the CALIOP aerosol classification, dust and smoke particles are the main aerosol types transported into the FT. Overall, the study shows that the fraction of AOD in the FT - and thus potentially located above low-level clouds - is substantial and deserves more attention when evaluating the radiative effect of aerosols in climate models. More generally, the results have implications for processes determining the overall budgets, sources, sinks and transport of aerosol particles and their description in atmospheric models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433963400007 |
WOS关键词 | VERTICAL-DISTRIBUTION ; CALIPSO ; CLOUD ; TRANSPORT ; CALIOP ; MODELS ; PROFILES ; OCEAN ; HAZE ; CLIMATOLOGY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18380 |
专题 | 地球科学 |
作者单位 | 1.Stockholm Univ, Dept Meteorol MISU, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 3.Univ Orleans, CNRS, LPC2E, Orleans, France; 4.Stockholm Univ, Dept Environm Sci & Analyt Chem ACES, Stockholm, Sweden; 5.SMHI, Dept Res & Dev, Atmospher Remote Sensing Unit, Norrkoping, Sweden; 6.Sci Syst & Applicat Inc, Hampton, VA USA; 7.Fed Off Meteorol & Climatol MeteoSwiss, Operat Ctr 1, CH-8058 Zurich Airport, Switzerland |
推荐引用方式 GB/T 7714 | Bourgeois, Quentin,Ekman, Annica M. L.,Renard, Jean-Baptiste,et al. How much of the global aerosol optical depth is found in the boundary layer and free troposphere?[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(10):7709-7720. |
APA | Bourgeois, Quentin.,Ekman, Annica M. L..,Renard, Jean-Baptiste.,Krejci, Radovan.,Devasthale, Abhay.,...&Tackett, Jason L..(2018).How much of the global aerosol optical depth is found in the boundary layer and free troposphere?.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(10),7709-7720. |
MLA | Bourgeois, Quentin,et al."How much of the global aerosol optical depth is found in the boundary layer and free troposphere?".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.10(2018):7709-7720. |
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