Dust and smoke transport from Africa to South America: Lidar profiling over Cape Verde and the Amazon rainforest

被引：135

作者：

Ansmann, Albert ^{[1
]}

Baars, Holger ^{[1
]}

Tesche, Matthias ^{[1
]}

Mueller, Detlef ^{[1
]}

Althausen, Dietrich ^{[1
]}

Engelmann, Ronny ^{[1
]}

Pauliquevis, Theotonio ^{[3
]}

Artaxo, Paulo ^{[2
]}

机构：

[1] Leibniz Inst Tropospher Res, D-04318 Leipzig, Germany

[2] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil

[3] Natl Inst Res Amazonia, Manaus, Amazonas, Brazil

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

SAHARAN DUST; SAMUM;

D O I：

10.1029/2009GL037923

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Quasi-simultaneous vertically resolved multiwavelength aerosol Raman lidar observations were conducted in the near field (Praia, Cape Verde, 15 degrees N, 23.5 degrees W) and in the far field (Manaus, Amazon basin, Brazil, 2.5 degrees S, 60 degrees W) of the long-range transport regime between West Africa and South America. Based on a unique data set (case study) of spectrally resolved backscatter and extinction coefficients, and of the depolarization ratio a detailed characterization of aerosol properties, vertical stratification, mixing, and aging behavior during the long-distance travel in February 2008 (dry season in western Africa, wet season in the Amazon basin) is presented. While highly stratified aerosol layers of dust and smoke up to 5.5 km height were found close to Africa, the aerosol over Manaus was almost well-mixed, reached up to 3.5 km, and mainly consisted of aged biomass burning smoke. Citation: Ansmann, A., H. Baars, M. Tesche, D. Muller, D. Althausen, R. Engelmann, T. Pauliquevis, and P. Artaxo (2009), Dust and smoke transport from Africa to South America: Lidar profiling over Cape Verde and the Amazon rainforest, Geophys. Res. Lett., 36, L11802, doi: 10.1029/2009GL037923.

引用

页数：5

共 12 条

[1]

ALTHAUSEN DR, 2008, 24 INT LAS RAD C BOU, P45

[2]

Ansmann A., 2005, Lidar. Range-Resolved Optical Remote Sensing of the Atmosphere, P105, DOI [10.1007/0-387-25101-4_4, DOI 10.1007/0-387-25101-4_4]

[3] Saharan dust in Brazil and Suriname during the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) - Cooperative LBA Regional Experiment (CLAIRE) in March 1998 [J].