Analysis of atmospheric aerosol optical properties in the northeast Brazilian atmosphere with remote sensing data from MODIS and CALIOP/CALIPSO satellites, AERONET photometers and a ground-based Lidar
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2019
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A 12-year analysis, from 2005 to 2016, of atmospheric aerosol optical properties focusing
for the first time on Northeast Brazil (NEB) was performed based on four di erent remote sensing
datasets: the Moderate Resolution Imaging Spectroradiometer (MODIS), the Aerosol Robotic Network
(AERONET), the Cloud-Aerosol LIDAR with Orthogonal Polarization (CALIOP) and a ground-based
Lidar from Natal. We evaluated and identified distinct aerosol types, considering Aerosol Optical
Depth (AOD) and Angström Exponent (AE). All analyses show that over the NEB, a low aerosol
scenario prevails, while there are two distinct seasons of more elevated AOD that occur every year,
from August to October and January to March. According to MODIS, AOD values ranges from 0.04 to
0.52 over the region with a mean of 0.20 and occasionally isolated outliers of up to 1.21. Aerosol types
were identified as sea spray, biomass burning, and dust aerosols mostly transported from tropical
Africa. Three case studies on days with elevated AOD were performed. All cases identified the
same aerosol types and modeled HYSPLIT backward trajectories confirmed their source-dependent
origins. This analysis is motivated by the implementation of an atmospheric chemistry model with an
advanced data assimilation system that will use the observational database over NEB with the model
to overcome high uncertainties in the model results induced by still unvalidated emission inventories.
Como referenciar
OLIVEIRA, ALINE M. de; SOUZA, CRISTINA T.; OLIVEIRA, NARA P.M. de; MELO, ALINE K.S.; LOPES, FABIO J.S.; LANDULFO, EDUARDO; ELBERN, HENDRIK; HOELZEMANN, JUDITH J. Analysis of atmospheric aerosol optical properties in the northeast Brazilian atmosphere with remote sensing data from MODIS and CALIOP/CALIPSO satellites, AERONET photometers and a ground-based Lidar. Atmosphere, v. 10, n. 10, p. 1-22, 2019. DOI: 10.3390/atmos10100594. Disponível em: http://repositorio.ipen.br/handle/123456789/30378. Acesso em: 19 Apr 2024.
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.