A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
A Look at Amazon Basin Seasonal Dynamics with the Biophysical ... A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
Concentration profiles of volatile organic compounds over Amazonia: Aircraftmeasurements during LBA CLAIRE 2001U. Kuhn 1 , T. Dindorf 1 , G. Schebeske 1 , A. Thielmann 1 , L. Ganzeveld 1 , G. Roberts 1 , J.Sciare 1 , M. Welling 1 , P. Ciccioli 2 , E. Brancaleoni 2 , M. Frattoni 2 , J. Lloyd 3 , O. Kolle 3 , P.Stefanie 4 , R. Valentini 4 , G. Fisch 5 , T. Germano 6 , L. Vanni Gatti 6 , M.A. Silva Dias 7 , P.Artaxo 8 , A. D. Nobre 9 , F. Meixner 1 , M.O. Andreae 1 , J. Kesselmeier 1(1) Max Planck Institute for Chemistry, Biogeochemistry Dept., Mainz, Germany(2) Instituto sull' Inquinamento Atmosferico del C.N.R., Monterotondo Scalo, Italy(3) Max Planck Institute for Biogeochemistry, Jena, Germany(4) Dipartimento di Scienze dell’Ambiente Forestale e delle sue Risorse, Università della Tuscia, Viterbo, Italy(5) Centro Tecnico Aerospacial IAE-CTA-ACA, Sao Jose dos Campos, Brazil(6) Institute Pesquisas Energeticas e Nucleares (IPEN), Cidade Universitaria, Sao Paulo, Brazil(7) Dept. Ciencias Atmosfericas, Universidade de São Paulo, São Paulo, SP, Brazil(8) Instituto de Física, Universidade de São Paulo, São Paulo, Brazil(9) Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, BrazilThe focus of LBA-CALIRE 2001 was to improve our knowledge required to determine thenet exchange of trace gases and aerosols between the atmosphere and the Amazon region, tounderstand the regulating processes and how they are influenced by anthropogenic activities.We present measurements on the vertical distribution of volatile organic compounds (VOC),carbon dioxide, nitrogen oxides, aerosol concentrations, and meteorological conditions abovea primary rain forest site, that will be used to develop an integrated and quantitativeunderstanding of the interactions of biogenic source fluxes, atmospheric transport and verticalexchange, and photochemical processing over the tropical forest. A specific objective withinthese studies was the impact of the Manaus plume on the chemical processing within theboundary layer. High product/precursors ratios were observed at fixed altitudes showing thatthe Manaus plume get stratified in a rather complex fashion.
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Concentr<strong>at</strong>ion profiles of vol<strong>at</strong>ile organic compounds over <strong>Amazon</strong>ia: Aircraftmeasurements during LBA CLAIRE 2001U. Kuhn 1 , T. Dindorf 1 , G. Schebeske 1 , A. Thielmann 1 , L. Ganzeveld 1 , G. Roberts 1 , J.Sciare 1 , M. Welling 1 , P. Ciccioli 2 , E. Brancaleoni 2 , M. Fr<strong>at</strong>toni 2 , J. Lloyd 3 , O. Kolle 3 , P.Stefanie 4 , R. Valentini 4 , G. Fisch 5 , T. Germano 6 , L. Vanni G<strong>at</strong>ti 6 , M.A. Silva Dias 7 , P.Artaxo 8 , A. D. Nobre 9 , F. Meixner 1 , M.O. Andreae 1 , J. Kesselmeier 1(1) Max Planck Institute for Chemistry, Biogeochemistry Dept., Mainz, Germany(2) Instituto sull' Inquinamento Atmosferico del C.N.R., Monterotondo Scalo, Italy(3) Max Planck Institute for Biogeochemistry, Jena, Germany(4) Dipartimento di Scienze dell’Ambiente Forestale e delle sue Risorse, Università della Tuscia, Viterbo, Italy(5) Centro Tecnico Aerospacial IAE-CTA-ACA, Sao Jose dos Campos, Brazil(6) Institute Pesquisas Energeticas e Nucleares (IPEN), Cidade Universitaria, Sao Paulo, Brazil(7) Dept. Ciencias Atmosfericas, Universidade de São Paulo, São Paulo, SP, Brazil(8) Instituto de Física, Universidade de São Paulo, São Paulo, Brazil(9) Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, BrazilThe focus of LBA-CALIRE 2001 was to improve our knowledge required to determine <strong>the</strong>net exchange of trace gases and aerosols between <strong>the</strong> <strong>at</strong>mosphere and <strong>the</strong> <strong>Amazon</strong> region, tounderstand <strong>the</strong> regul<strong>at</strong>ing processes and how <strong>the</strong>y are influenced by anthropogenic activities.We present measurements on <strong>the</strong> vertical distribution of vol<strong>at</strong>ile organic compounds (VOC),carbon dioxide, nitrogen oxides, aerosol concentr<strong>at</strong>ions, and meteorological conditions abovea primary rain forest site, th<strong>at</strong> will be used to develop an integr<strong>at</strong>ed and quantit<strong>at</strong>iveunderstanding of <strong>the</strong> interactions of biogenic source fluxes, <strong>at</strong>mospheric transport and verticalexchange, and photochemical processing over <strong>the</strong> tropical forest. A specific objective <strong>with</strong>in<strong>the</strong>se studies was <strong>the</strong> impact of <strong>the</strong> Manaus plume on <strong>the</strong> chemical processing <strong>with</strong>in <strong>the</strong>boundary layer. High product/precursors r<strong>at</strong>ios were observed <strong>at</strong> fixed altitudes showing th<strong>at</strong><strong>the</strong> Manaus plume get str<strong>at</strong>ified in a r<strong>at</strong>her complex fashion.
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