Comparing lidar and ceilometer backscattering measurements for the detection of aerosol layers in the PBL over São Paulo, Brazil

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dc.contributor.authorSANTOS, AMANDA V.pt_BR
dc.contributor.authorLANDULFO, EDUARDOpt_BR
dc.contributor.authorMOREIRA, GREGORI A.pt_BR
dc.contributor.authorMARQUES, MARCIA T.A.pt_BR
dc.contributor.authorANDRADE, MARIA F.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoWORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 11thpt_BR
dc.date.accessioned2022-10-04T17:20:40Z
dc.date.available2022-10-04T17:20:40Z
dc.date.eventoOctober 19-22, 2021pt_BR
dc.description.abstractThe Planetary Boundary Layer (PBL) is the lowest part of the troposphere and it is directly influenced by the Earth’s surface and anthropogenic activities. The concentration of aerosol in the PBL is typically much higher than in the free troposphere. Given that most of the air pollution in the troposphere is capped by this layer, obtaining the PBL height (PBLH) and its evolution during the day can assist in monitoring and studying aerosol concentrations and properties and its impact on air quality. Multi-instrument monitoring of the PBLH can assist in identifying the arrival of different air masses and tracking the evolution of aerosol layers during the day. Due to their lower cost, ceilometers can be powerful tools to enhance these measurements, although such an instrument has a few limitations when compared to lidars. The weaker laser light source used in ceilometers can limit the detection of aerosol layers to a few kilometers in height, depending on the presence and distribution of clouds and aerosols in the atmosphere. Given that some methods to estimate the PBLH need strong gradients in the concentration of aerosols to identify it correctly, the improper identification of the aerosol layers can become problematic for obtaining the PBLH. We compared lidar and ceilometer data from two instruments located in the city of São Paulo, Brazil, approximately 15 km from each other. We found that, in clear sky conditions, it is possible to correctly identify aerosol layers in the PBL with data from both instruments. The presence of clouds, signal attenuation and noise can sometimes cause errors in the identification of aerosol layers, especially when using ceilometer data. We found that, despite not being co-located, both instruments show similar profiles, up to a few kilometers in height.pt_BR
dc.event.siglaWLMLApt_BR
dc.format.extent22-22pt_BR
dc.identifier.citationSANTOS, AMANDA V.; LANDULFO, EDUARDO; MOREIRA, GREGORI A.; MARQUES, MARCIA T.A.; ANDRADE, MARIA F. Comparing lidar and ceilometer backscattering measurements for the detection of aerosol layers in the PBL over São Paulo, Brazil. In: WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 11th, October 19-22, 2021, Punta Arenas, Chile. <b>Abstract...</b> Punta Arenas, Chile: Universidad de Magallanes, 2021. p. 22-22. Disponível em: http://repositorio.ipen.br/handle/123456789/33306.
dc.identifier.orcid0000-0002-9691-5306pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9691-5306
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/33306
dc.localPunta Arenas, Chilept_BR
dc.local.eventoPunta Arenas, Chilept_BR
dc.publisherUniversidad de Magallanespt_BR
dc.rightsopenAccesspt_BR
dc.subjectoptical radar
dc.subjectboundary layers
dc.subjectlayers
dc.subjectaerosols
dc.titleComparing lidar and ceilometer backscattering measurements for the detection of aerosol layers in the PBL over São Paulo, Brazilpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorGREGORI DE ARRUDA MOREIRA
ipen.autorEDUARDO LANDULFO
ipen.autorAMANDA VIEIRA DOS SANTOS
ipen.codigoautor10204
ipen.codigoautor503
ipen.codigoautor15243
ipen.contributor.ipenauthorGREGORI DE ARRUDA MOREIRA
ipen.contributor.ipenauthorEDUARDO LANDULFO
ipen.contributor.ipenauthorAMANDA VIEIRA DOS SANTOS
ipen.date.recebimento22-10
ipen.event.datapadronizada2021pt_BR
ipen.identifier.ipendoc28962pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication539c9881-45aa-4cc9-aefe-a503026f1567
relation.isAuthorOfPublicatione4dff370-e8c1-4437-846a-ef18a3ad606b
relation.isAuthorOfPublication41c3b26c-5007-4619-9d16-95a1a07b46f3
relation.isAuthorOfPublication.latestForDiscovery41c3b26c-5007-4619-9d16-95a1a07b46f3
sigepi.autor.atividadeMOREIRA, GREGORI A.:10204:-1:Npt_BR
sigepi.autor.atividadeLANDULFO, EDUARDO:503:920:Npt_BR
sigepi.autor.atividadeSANTOS, AMANDA V.:15243:920:Spt_BR
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