Multi-wavelength Raman lidar, sun photometric and aircraft measurements in combination with inversion models for the estimation of the aerosol optical and physico-chemical properties over Athens, Greece

被引：29

作者：

Mamouri, R. E. ^{[1
]}

Papayannis, A. ^{[1
]}

Amiridis, V. ^{[2
]}

Mueller, D. ^{[3
,4
]}

Kokkalis, P. ^{[1
]}

Rapsomanikis, S. ^{[5
]}

Karageorgos, E. T. ^{[5
]}

Tsaknakis, G. ^{[1
]}

Nenes, A. ^{[6
,7
]}

Kazadzis, S. ^{[8
]}

Remoundaki, E. ^{[9
]}

机构：

[1] Natl Tech Univ Athens, Dept Phys, Laser Remote Sensing Lab, Zografos, Greece

[2] Natl Observ Athens, Inst Space Applicat & Remote Sensing, Athens, Greece

[3] Leibniz Inst Tropospher Res, Leipzig, Germany

[4] GIST, Buk Gu, Gwangju, South Korea

[5] Democritus Univ Thrace, Dept Environm Engn, GR-67100 Xanthi, Greece

[6] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA

[7] Fdn Res & Technol Hellas, Inst Chem Engn & High Temp Chem Proc, Patras, Greece

[8] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens, Greece

[9] Natl Tech Univ Athens, Sch Min & Met Engn, Zografos, Greece

来源：

ATMOSPHERIC MEASUREMENT TECHNIQUES | 2012年 / 5卷 / 07期

关键词：

MICROPHYSICAL PARTICLE PARAMETERS; SAHARAN DUST AEROSOLS; BACKSCATTER LIDAR; EARLINET PROJECT; REFRACTIVE-INDEX; LIGHT-ABSORPTION; EXTINCTION; REGULARIZATION; FRAMEWORK; URBAN;

D O I：

10.5194/amt-5-1793-2012

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

A novel procedure has been developed to retrieve, simultaneously, the optical, microphysical and chemical properties of tropospheric aerosols with a multi-wavelength Raman lidar system in the troposphere over an urban site (Athens, Greece: 37.9A degrees N, 23.6A degrees E, 200 m a.s.l.) using data obtained during the European Space Agency (ESA) THERMOPOLIS project, which took place between 15-31 July 2009 over the Greater Athens Area (GAA). We selected to apply our procedure for a case study of intense aerosol layers that occurred on 20-21 July 2009. The National Technical University of Athens (NTUA) EOLE 6-wavelength Raman lidar system has been used to provide the vertical profiles of the optical properties of aerosols (extinction and backscatter coefficients, lidar ratio) and the water vapor mixing ratio. An inversion algorithm was used to derive the mean aerosol microphysical properties (mean effective radius (r(eff)), single-scattering albedo omega) and mean complex refractive index (m)) at selected heights in the 2-3 km height region. We found that r(eff) was 0.14-0.4 (+/- 0.14) mu m, omega was 0.63-0.88 (+/- 0.08) (at 532 nm) and m ranged from 1.44 (+/- 0.10) + 0.01 (+/- 0.01)i to 1.55 (+/- 0.12) + 0.06 (+/- 0.02)i, in good agreement (only for the r(eff) values) with in situ aircraft measurements. The water vapor and temperature profiles were incorporated into the ISORROPIA II model to propose a possible in situ aerosol composition consistent with the retrieved m and omega values. The retrieved aerosol chemical composition in the 2-3 km height region gave a variable range of sulfate (0-60%) and organic carbon (OC) content (0-50%), although the OC content increased (up to 50%) and the sulfate content dropped (up to 30%) around 3 km height; the retrieved low omega value (0.63), indicates the presence of absorbing biomass burning smoke mixed with urban haze. Finally, the retrieved aerosol microphysical properties were compared with column-integrated sun photometer CIMEL data.

引用

页码：1793 / 1808

页数：16

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