Universität zu Köln

de Oliveira, Aline M., Souza, Cristina T., de Oliveira, Nara P. M., Melo, Aline K. S., Lopes, Fabio J. S., Landulfo, Eduardo ORCID: 0000-0002-9691-5306, Elbern, Hendrik and Hoelzemann, Judith J. (2019). 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, 10 (10). BASEL: MDPI. ISSN 2073-4433

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Abstract

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 different 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 Angstrom 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code de Oliveira, Aline M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Souza, Cristina T. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Oliveira, Nara P. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Melo, Aline K. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lopes, Fabio J. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Landulfo, Eduardo UNSPECIFIED orcid.org/0000-0002-9691-5306 UNSPECIFIED Elbern, Hendrik UNSPECIFIED UNSPECIFIED UNSPECIFIED Hoelzemann, Judith J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-131838
DOI:	10.3390/atmos10100594
Journal or Publication Title:	Atmosphere
Volume:	10
Number:	10
Date:	2019
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2073-4433
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AMAZON BASIN; DUST; DEPTH; TRANSPORT; RETRIEVALS; PRODUCTS; CLIMATOLOGY; ALGORITHM; EMISSIONS; AFRICA Multiple languages Meteorology & Atmospheric Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13183