Analyzing the atmospheric boundary layer using high-order moments obtained from multiwavelength lidar data
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Atmospheric Measurement Techniques
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The lowest region of the troposphere is a turbulent
layer known as the atmospheric boundary layer (ABL)
and characterized by high daily variability due to the influence
of surface forcings. This is the reason why detecting
systems with high spatial and temporal resolution, such as
lidar, have been widely applied for researching this region.
In this paper, we present a comparative analysis on the use
of lidar-backscattered signals at three wavelengths (355, 532
and 1064 nm) to study the ABL by investigating the highorder
moments, which give us information about the ABL
height (derived by the variance method), aerosol layer movement
(skewness) and mixing conditions (kurtosis) at several
heights. Previous studies have shown that the 1064 nm wavelength,
due to the predominance of particle signature in the
total backscattered atmospheric signal and practically null
presence of molecular signal (which can represent noise in
high-order moments), provides an appropriate description of
the turbulence field, and thus in this study it was considered
a reference. We analyze two case studies that show us that
the backscattered signal at 355 nm, even after applying some
corrections, has a limited applicability for turbulence studies
using the proposed methodology due to the strong contribution
of the molecular signature to the total backscatter signal.
This increases the noise associated with the high-order
profiles and, consequently, generates misinformation. On the
other hand, the information on the turbulence field derived
from the backscattered signal at 532 nm is similar to that obtained at 1064 nm due to the appropriate attenuation of the
noise, generated by molecular component of backscattered
signal by the application of the corrections proposed.
Como referenciar
MOREIRA, GREGORI de A.; LOPES, FABIO J. da S.; GUERRERO-RASCADO, JUAN L.; SILVA, JONATAN J. da; GOMES, ANTONIO A.; LANDULFO, EDUARDO; ALADOS-ARBOLEDAS, LUCAS. Analyzing the atmospheric boundary layer using high-order moments obtained from multiwavelength lidar data: impact of wavelength choice. Atmospheric Measurement Techniques, v. 12, n. 8, p. 4261-4276, 2019. DOI: 10.5194/amt-12-4261-2019. Disponível em: http://repositorio.ipen.br/handle/123456789/30379. Acesso em: 26 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.