Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth
This paper presents an analysis of ground-based Aerosol Optical Depth (AOD) observations by the Aerosol Robotic Network (AERONET) in South America from 2001 to 2007 in comparison with the satellite AOD product of Moderate Resolution Imaging Spectroradiometer (MODIS), aboard TERRA and AQUA satellites...
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:4708 2024-09-09T18:55:36+00:00 Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth Hoelzemann, J.J. Longo, K.M. Fonseca, R.M. do Rosario, N.M.E. Elbern, H. Feitas, S.R. Pires, C. DE 2009 https://juser.fz-juelich.de/record/4708 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-4708%22 eng eng Union info:eu-repo/semantics/altIdentifier/issn/0141-8637 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JD010369 info:eu-repo/semantics/altIdentifier/wos/WOS:000267643000001 info:eu-repo/semantics/altIdentifier/hdl/2128/20439 https://juser.fz-juelich.de/record/4708 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-4708%22 info:eu-repo/semantics/openAccess Journal of Geophysical Research 114, D13301 (2009). doi:10.1029/2008JD010369 info:eu-repo/classification/ddc/550 J info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftfzjuelichnvdb https://doi.org/10.1029/2008JD010369 2024-08-05T23:55:47Z This paper presents an analysis of ground-based Aerosol Optical Depth (AOD) observations by the Aerosol Robotic Network (AERONET) in South America from 2001 to 2007 in comparison with the satellite AOD product of Moderate Resolution Imaging Spectroradiometer (MODIS), aboard TERRA and AQUA satellites. Data of 12 observation sites were used with primary interest in AERONET sites located in or downwind of areas with high biomass burning activity and with measurements available for the full time range. Fires cause the predominant carbonaceous aerosol emission signal during the dry season in South America and are therefore a special focus of this study. Interannual and seasonal behavior of the observed AOD at different sites were investigated, showing clear differences between purely fire and urban influenced sites. An intercomparison of AERONET and MODIS AOD annual correlations revealed that neither an interannual long-term trend may be observed nor that correlations differ significantly owing to different overpass times of TERRA and AQUA. Individual anisotropic representativity areas for each AERONET site were derived by correlating daily AOD of each site for all years with available individual MODIS AOD pixels gridded to 1 degrees x 1 degrees. Results showed that for many sites a good AOD correlation (R-2 > 0.5) persists for large, often strongly anisotropic, areas. The climatological areas of common regional aerosol regimes often extend over several hundreds of kilometers, sometimes far across national boundaries. As a practical application, these strongly inhomogeneous and anisotropic areas of influence are being implemented in the tropospheric aerosol data assimilation system of the Coupled Chemistry-Aerosol-Tracer Transport Model coupled to the Brazilian Regional Atmospheric Modeling System (CCATT-BRAMS) at the Brazilian National Institute for Space Research (INPE). This new information promises an improved exploitation of local site sampling and, thus, chemical weather forecast. Article in Journal/Newspaper Aerosol Robotic Network Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Journal of Geophysical Research 114 D13 |
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Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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language |
English |
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info:eu-repo/classification/ddc/550 J |
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info:eu-repo/classification/ddc/550 J Hoelzemann, J.J. Longo, K.M. Fonseca, R.M. do Rosario, N.M.E. Elbern, H. Feitas, S.R. Pires, C. Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
topic_facet |
info:eu-repo/classification/ddc/550 J |
description |
This paper presents an analysis of ground-based Aerosol Optical Depth (AOD) observations by the Aerosol Robotic Network (AERONET) in South America from 2001 to 2007 in comparison with the satellite AOD product of Moderate Resolution Imaging Spectroradiometer (MODIS), aboard TERRA and AQUA satellites. Data of 12 observation sites were used with primary interest in AERONET sites located in or downwind of areas with high biomass burning activity and with measurements available for the full time range. Fires cause the predominant carbonaceous aerosol emission signal during the dry season in South America and are therefore a special focus of this study. Interannual and seasonal behavior of the observed AOD at different sites were investigated, showing clear differences between purely fire and urban influenced sites. An intercomparison of AERONET and MODIS AOD annual correlations revealed that neither an interannual long-term trend may be observed nor that correlations differ significantly owing to different overpass times of TERRA and AQUA. Individual anisotropic representativity areas for each AERONET site were derived by correlating daily AOD of each site for all years with available individual MODIS AOD pixels gridded to 1 degrees x 1 degrees. Results showed that for many sites a good AOD correlation (R-2 > 0.5) persists for large, often strongly anisotropic, areas. The climatological areas of common regional aerosol regimes often extend over several hundreds of kilometers, sometimes far across national boundaries. As a practical application, these strongly inhomogeneous and anisotropic areas of influence are being implemented in the tropospheric aerosol data assimilation system of the Coupled Chemistry-Aerosol-Tracer Transport Model coupled to the Brazilian Regional Atmospheric Modeling System (CCATT-BRAMS) at the Brazilian National Institute for Space Research (INPE). This new information promises an improved exploitation of local site sampling and, thus, chemical weather forecast. |
format |
Article in Journal/Newspaper |
author |
Hoelzemann, J.J. Longo, K.M. Fonseca, R.M. do Rosario, N.M.E. Elbern, H. Feitas, S.R. Pires, C. |
author_facet |
Hoelzemann, J.J. Longo, K.M. Fonseca, R.M. do Rosario, N.M.E. Elbern, H. Feitas, S.R. Pires, C. |
author_sort |
Hoelzemann, J.J. |
title |
Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
title_short |
Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
title_full |
Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
title_fullStr |
Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
title_full_unstemmed |
Regional representativity of AERONET observation sites during the biomass burning season in South America determined by correlation studies with MODIS Aerosol Optical Depth |
title_sort |
regional representativity of aeronet observation sites during the biomass burning season in south america determined by correlation studies with modis aerosol optical depth |
publisher |
Union |
publishDate |
2009 |
url |
https://juser.fz-juelich.de/record/4708 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-4708%22 |
op_coverage |
DE |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Journal of Geophysical Research 114, D13301 (2009). doi:10.1029/2008JD010369 |
op_relation |
info:eu-repo/semantics/altIdentifier/issn/0141-8637 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JD010369 info:eu-repo/semantics/altIdentifier/wos/WOS:000267643000001 info:eu-repo/semantics/altIdentifier/hdl/2128/20439 https://juser.fz-juelich.de/record/4708 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-4708%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2008JD010369 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
D13 |
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1809910615656890368 |