A permanent Raman lidar station in the Amazon: description, characterization, and first results

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dc.contributor.authorBarbosa, H. M. J.
dc.contributor.authorBarja, B.
dc.contributor.authorPauliquevis, T.
dc.contributor.authorGouveia, D. A.
dc.contributor.authorArtaxo, P.
dc.contributor.authorCirino, G. G.
dc.contributor.authorSantos, R. M. N.
dc.contributor.authorOliveira, A. B.
dc.date.accessioned2024-06-28T18:10:14Z
dc.date.available2024-06-28T18:10:14Z
dc.date.issued2014-06-18
dc.description.abstractA permanent UV Raman lidar station, designed to perform continuous measurements of aerosols and water vapor and aiming to study and monitor the atmosphere from weather to climatic time scales, became operational in the central Amazon in July 2011. The automated data acquisition and internet monitoring enabled extended hours of daily measurements when compared to a manually operated instrument. This paper gives a technical description of the system, presents its experimental characterization and the algorithms used for obtaining the aerosol optical properties and identifying the cloud layers. Data from one week of measurements during the dry season of 2011 were analyzed as a mean to assess the overall system capability and performance. Both Klett and Raman inversions were successfully applied. A comparison of the aerosol optical depth from the lidar and from a co-located Aerosol Robotic Network (AERONET) sun photometer showed a correlation coefficient of 0.86. By combining nighttime measurements of the aerosol lidar ratio (50–65 sr), back-trajectory calculations and fire spots observed from satellites, we showed that observed particles originated from biomass burning. Cirrus clouds were observed in 60% of our measurements. Most of the time they were distributed into three layers between 11.5 and 13.4 km a.g.l. The systematic and long-term measurements being made by this new scientific facility have the potential to significantly improve our understanding of the climatic implications of the anthropogenic changes in aerosol concentrations over the pristine Amazonia.
dc.description.sponsorshipWe would like to acknowledge the financial support from FAPESP Research Program on Global Climate Change under research grants 2008/58100-1, 2009/15235-8, 2011/50170-4, 2012/14437-9 and 2012/16100-1. We were also supported by the Instituto Nacional de Ciência e Tecnologia (INCT) – Mudanças Climáticas and CNPq grants 477575/2008- 0, 475735/2012-9 and 457843/2013-6. We are grateful to Mr. Fernando Morais for operation of the AERONET station at Manaus. We thank Alcides C. Ribeiro, Ana L. Loureiro, Fábio de Oliveira Jorge and Simara Morais for technical and logistical support. Operation of the instruments at the experimental site would not have been possible without the institutional support from EMBRAPA and INPA (Instituto Nacional de Pesquisas da Amazonia) LBA Central Office in Manaus. Special thanks to Birgit Heese from the Leibniz-Institut für Troposphärenforschung for providing data evaluation software on top of which we developed part of our analysis routines
dc.description.urihttps://amt.copernicus.org/articles/7/1745/2014/amt-7-1745-2014.html
dc.format.extent18 pages
dc.genre17
dc.identifierdoi:10.13016/m28dwb-3h7n
dc.identifier.citationBarbosa, H. M. J., B. Barja, T. Pauliquevis, D. A. Gouveia, P. Artaxo, G. G. Cirino, R. M. N. Santos, and A. B. Oliveira. “A Permanent Raman Lidar Station in the Amazon: Description, Characterization, and First Results.” Atmospheric Measurement Techniques 7, no. 6 (June 18, 2014): 1745–62. https://doi.org/10.5194/amt-7-1745-2014.
dc.identifier.urihttps://doi.org/10.5194/amt-7-1745-2014
dc.identifier.urihttp://hdl.handle.net/11603/34792
dc.language.isoen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department
dc.rightsCC BY 3.0 DEED Attribution 3.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.titleA permanent Raman lidar station in the Amazon: description, characterization, and first results
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-4027-1855

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