Research Papers

Two-wavelength lidar characterization of atmospheric aerosol fields at low altitudes over heterogeneous terrain

[+] Author Affiliations
Zahary Y. Peshev, Tanja N. Dreischuh, Eleonora N. Toncheva, Dimitar V. Stoyanov

Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Boulevard, 1784 Sofia, Bulgaria

J. Appl. Remote Sens. 6(1), 063581 (Sep 24, 2012). doi:10.1117/1.JRS.6.063581
History: Received May 9, 2012; Revised August 24, 2012; Accepted August 28, 2012
Text Size: A A A

Abstract.  The possibilities for applying multiwavelength elastic lidar probing of the atmosphere to help monitor air-quality over large industrial and densely populated areas, based predominantly on the use and analysis of commonly obtainable backscatter-related lidar quantities, are examined. Presented are two-wavelength (1064/532nm) lidar observations on the spatial distribution, structure, composition, and temporal evolution of close-to-surface atmospheric aerosol fields over heterogeneous orographic areas (adjacent city, plain, and mountain) near Sofia, Bulgaria. Selected winter-time evening lidar measurements are described. Range profiles, histograms, and evolutional range-time diagrams of the aerosol backscatter coefficients, range-corrected lidar signals, normalized standard deviations, and backscatter-related Ångström exponents (BAE) are analyzed. Near-perfect correlation between the aerosol density distribution and orographic differentiation of the underlying terrain is established, finding expression in a sustained horizontal stratification of the probed atmospheric domains. Distinctive features in the spatial distribution and temporal evolution of both the fine- and coarse aerosol fractions are revealed in correlation with terrain’s orography. Zonal aerosol particle size distributions are qualitatively characterized by using an approach based on BAE occurrence frequency distribution analysis. Assumptions are made about the aerosol particle type, origin, and dominating size as connected (by transport-modeling data) to local pollution sources. Specifics and patterns of temporal dynamics of the fine- and coarse aerosol fraction density distributions and movements, revealed by using statistical analysis of lidar data, are discussed. The obtained results prove the capability of the used two-wavelength lidar approach to perform fast-, reliable, and self-consistent characterization of important optical-, micro-physical-, and dynamical properties of atmospheric aerosols over broad areas with high temporal- and range resolution.

Figures in this Article
© 2012 Society of Photo-Optical Instrumentation Engineers

Topics

Aerosols ; LIDAR ; Particles

Citation

Zahary Y. Peshev ; Tanja N. Dreischuh ; Eleonora N. Toncheva and Dimitar V. Stoyanov
"Two-wavelength lidar characterization of atmospheric aerosol fields at low altitudes over heterogeneous terrain", J. Appl. Remote Sens. 6(1), 063581 (Sep 24, 2012). ; http://dx.doi.org/10.1117/1.JRS.6.063581


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.