Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-14987-2017 |
Profiling of Saharan dust from the Caribbean to western Africa - Part 2: Shipborne lidar measurements versus forecasts | |
Ansmann, Albert1; Rittmeister, Franziska1; Engelmann, Ronny1; Basart, Sara2; Jorba, Oriol2; Spyrou, Christos3; Remy, Samuel4; Skupin, Annett1; Baars, Holger1; Seifert, Patric1; Senf, Fabian1; Kanitz, Thomas5 | |
2017-12-19 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Spain; Greece; France; Netherlands |
英文摘要 | A unique 4-week ship cruise from Guadeloupe to Cabo Verde in April-May 2013 (see part 1, Rittmeister et al., 2017) is used for an in-depth comparison of dust profiles observed with a polarization/Raman lidar aboard the German research vessel Meteor over the remote tropical Atlantic and respective dust forecasts of a regional (SKIRON) and two global atmospheric (dust) transport models (NMMB/BSC-Dust, MACC/CAMS). New options of model-observation comparisons are presented. We analyze how well the modeled fine dust (submicrometer particles) and coarse dust contributions to light extinction and mass concentration match respective lidar observations, and to what extent models, adjusted to aerosol optical thickness observations, are able to reproduce the observed layering and mixing of dust and non-dust (mostly marine) aerosol components over the remote tropical Atlantic. Based on the coherent set of dust profiles at well-defined distances from Africa (without any disturbance by anthropogenic aerosol sources over the ocean), we investigate how accurately the models handle dust removal at distances of 1500 km to more than 5000 km west of the Saharan dust source regions. It was found that (a) dust predictions are of acceptable quality for the first several days after dust emission up to 2000 km west of the African continent, (b) the removal of dust from the atmosphere is too strong for large transport paths in the global models, and (c) the simulated fine-to-coarse dust ratio (in terms of mass concentration and light extinction) is too high in the models compared to the observations. This deviation occurs initially close to the dust sources and then increases with distance from Africa and thus points to an overestimation of fine dust emission in the models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418279100003 |
WOS关键词 | AEROSOL OPTICAL DEPTH ; CONVECTIVE ADJUSTMENT SCHEME ; 1 MODEL DESCRIPTION ; MINERAL DUST ; SIZE DISTRIBUTION ; DESERT DUST ; POLARIZATION/RAMAN LIDAR ; MEDITERRANEAN REGION ; RAMAN-POLARIZATION ; NORTHERN AFRICA |
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/30549 |
专题 | 地球科学 |
作者单位 | 1.Leibniz Inst Tropospher Res, Leipzig, Germany; 2.Barcelona Supercomp Ctr, Dept Earth Sci, Barcelona, Spain; 3.Univ Athens, Dept Phys, Athens, Greece; 4.UPMC, CNRS, IPSL, Lab Meteorol Dynam, Paris, France; 5.ESTEC, Noordwijk, Netherlands |
推荐引用方式 GB/T 7714 | Ansmann, Albert,Rittmeister, Franziska,Engelmann, Ronny,et al. Profiling of Saharan dust from the Caribbean to western Africa - Part 2: Shipborne lidar measurements versus forecasts[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(24). |
APA | Ansmann, Albert.,Rittmeister, Franziska.,Engelmann, Ronny.,Basart, Sara.,Jorba, Oriol.,...&Kanitz, Thomas.(2017).Profiling of Saharan dust from the Caribbean to western Africa - Part 2: Shipborne lidar measurements versus forecasts.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(24). |
MLA | Ansmann, Albert,et al."Profiling of Saharan dust from the Caribbean to western Africa - Part 2: Shipborne lidar measurements versus forecasts".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.24(2017). |
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