A Single-ended Atmospheric Transmissometer

Leonard, Donald A.; Caputo, Bernard

doi:10.1117/12.7971669

Cited by 7 publications

(1 citation statement)

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“…[17][18][19] In a Raman lidar, wavelength R of the scattered light is shifted with respect to emitted laser wavelength L , and such a shift depends on the scattering molecule. 16 For detection of the Raman scattering of a gas with known atmospheric density, such as nitrogen or oxygen, the backscatter coefficient in the Raman lidar equation is known, and only the aerosol extinction and its wavelength dependence remain as unknowns.…”

Section: Methodsmentioning

confidence: 99%

Aerosol lidar intercomparison in the framework of the EARLINET project 3 Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio

Pappalardo¹,

Amodeo²,

Pandolfi³

et al. 2004

Appl. Opt.

256

229

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An intercomparison of the algorithms used to retrieve aerosol extinction and backscatter starting from Raman lidar signals has been performed by 11 groups of lidar scientists involved in the European Aerosol Research Lidar Network ͑EARLINET͒. This intercomparison is part of an extended quality assurance program performed on aerosol lidars in the EARLINET. Lidar instruments and aerosol backscatter algorithms were tested separately. The Raman lidar algorithms were tested by use of synthetic lidar data, simulated at 355, 532, 386, and 607 nm, with realistic experimental and atmospheric conditions taken into account. The intercomparison demonstrates that the data-handling procedures used by all the lidar groups provide satisfactory results. Extinction profiles show mean deviations from the correct solution within 10% in the planetary boundary layer ͑PBL͒, and backscatter profiles, retrieved by use of algorithms based on the combined Raman elastic-backscatter lidar technique, show mean deviations from solutions within 20% up to 2 km. The intercomparison was also carried out for the lidar ratio and produced profiles that show a mean deviation from the solution within 20% in the PBL. The mean value of this parameter was also calculated within a lofted aerosol layer at higher altitudes that is representative of typical layers related to special events such as Saharan dust outbreaks, forest fires, and volcanic eruptions. Here deviations were within 15%.

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Section: Methodsmentioning

confidence: 99%

Aerosol lidar intercomparison in the framework of the EARLINET project 3 Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio

Pappalardo¹,

Amodeo²,

Pandolfi³

et al. 2004

Appl. Opt.

256

229

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Lidar and Atmospheric Aerosol Particles

Ansmann

Müller

Springer Series in Optical Sciences

118

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Lidar measurements of rotational Raman and double scattering

1978

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The analysis of unusually strong Raman backscattering signals from clouds shows that such signals cannot be merely related to filter on-line leakage. Theoretical calculations of Raman double scattering in an atmosphere with high optical depth values are presented, and it is shown that the Raman multiple scattering effect is not negligible. The results of the calculations are in good agreement with the experimental data.

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A Single-ended Atmospheric Transmissometer

Cited by 7 publications

References 0 publications

Aerosol lidar intercomparison in the framework of the EARLINET project 3 Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio

Aerosol lidar intercomparison in the framework of the EARLINET project 3 Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio

Lidar and Atmospheric Aerosol Particles

Lidar measurements of rotational Raman and double scattering

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