Multispectral elastic scanning lidar for industrial flare research: characterizing the electronic subsystem and application

Author(s)

Luis Guerrero-Rascado, Juan ^{[1, 2, 3]} ; da Costa, Renata Facundes ^[3] ; Esteban Bedoya, Andres ^[4] ; Guardani, Roberto ^[5] ; Alados-Arboledas, Lucas ^{[1, 2]} ; Efrain Bastidas, Alvaro ^[4] ; Landulfo, Eduardo ^[3]

Affiliation

^[1] Inst Interuniv Invest Sistema Tierra Andalucia II, Granada 18006 - Spain

^[2] Univ Granada, Dept Fis Aplicada, E-18071 Granada - Spain

^[3] Inst Pesquisas Energet & Nucl, Ctr Lasers & Aplicacoes, BR-05508000 Sao Paulo - Brazil

^[4] Univ Nacl Colombia, Escuela Fis, Medellin - Colombia

^[5] Univ Sao Paulo, Dept Engn Quim, BR-05508900 Sao Paulo - Brazil

• Document type: Journal article
• Source: Optics Express; v. 22, n. 25, p. 31063-31077, DEC 15 2014.
• Web of Science Citations: 8

Abstract

This work deals with the analysis of the electronic subsystem of a multiwavelength elastic scanning lidar. Several calibration tests are applied to the Cubat (a) over tildeo scanning lidar placed at the industrial area of Cubat (a) over tildeo in the State of S (a) over tildeo Paulo (Brazil), in order to improve the knowledge of its performing itself and to design protocols for correcting lidar signal for undesirable instrumental effects. In particular, the trigger delay is assessed by means of zero-bin and bin-shift tests for analog (AN) and photo-counting (PC) signals, respectively. Dark current test is also performed to detect potential range-dependency that could affect lidar products. All tests were performed at different spatial resolutions. These instrumental corrections were applied to a case study of data acquired for characterizing the optical and microphysical properties of particles in an industrial flare. To that aim, a graphical method based on the space defined by the extinction-related Angstrom exponent versus its spectral curvature is used to derive the contribution of fine aerosol to extinction and the size of the fine aerosols in the industrial flare, therefore revealing features of the processes occurring inside the flame. Our study demonstrates the potential of this new technique for the study and measurement of industrial emissions. (C)2014 Optical Society of America (AU)

• FAPESP's process: 08/58104-8 - Narrowing the uncertainties on aerosol and climate changes in São Paulo State: NUANCES-SPS
• Grantee: Maria de Fátima Andrade
• Support Opportunities: Research Program on Global Climate Change - Thematic Grants
• FAPESP's process: 13/21087-7 - LIDAR (Light Detection and Ranging): improvements of aerosol monitoring in the framework of LALINET
• Grantee: Eduardo Landulfo
• Support Opportunities: Research Grants - Visiting Researcher Grant - International