author = "Wolff, Stefan Aiko and Ganzeveld, Laurens and Tsokankunku, 
                         Anywhere and P{\"o}hlker, Christopher and S{\'a}, Leonardo Deane 
                         de Abreu and Manzi, Antonio Ocimar and Souza, Rodrigo and Trebs, 
                         Ivonne and Soergel, Matthias",
          affiliation = "{Max Planck Institute for Chemistry–Mainz} and {Wageningen UR} and 
                         {Max Planck Institute for Chemistry–Mainz} and {Max Planck 
                         Institute for Chemistry–Mainz} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {} and {Max Planck Institute for 
                         Chemistry–Mainz} and {Max Planck Institute for Chemistry–Mainz}",
                title = "Comparison of measured reactive trace gas profiles with a 
                         multi-layer canopy chemical exchange model in an Amazonian 
            booktitle = "Abstracts...",
                 year = "2016",
         organization = "EGU General Assembly",
             abstract = "In 2011, an 80 m high walk up tower for atmospheric research was 
                         erected at the ATTO (Amazon Tall Tower Observatory) site 
                         (02°08'38.8''S, 58°59'59.5''W) in the remote Amazonian rainforest. 
                         The nearly pristine environment allows biosphere-atmosphere 
                         studies within an ecosystem far away from large anthropogenic 
                         emission sources. Since April 2012 vertical mixing ratio profiles 
                         of H2O, CO2 and O3 were measured at 8 different heights between 
                         0.05 m and 79.3 m. During five intensive campaigns (Oct-Dec 2012, 
                         Oct-Nov 2013, Mar 2014, Aug-Sep 2014, Oct-Dec 2015) nitric oxide 
                         (NO) and nitrogen dioxide (NO2) were also measured. We applied the 
                         Multi-layer Canopy Chemical Exchange Model - MLC-CHEM to support 
                         the analysis of the observed profiles of NOx and O3. This includes 
                         inferring bi-directional surface-atmosphere exchange fluxes as 
                         well as the role of the canopy interactions between the emissions, 
                         dry deposition, chemistry and turbulent transport of trace gases. 
                         During our investigation of diurnal and seasonal differences 
                         between model and measurements, we conducted a set of sensitivity 
                         studies to analyse the effects of changes in NOx-soil emissions, 
                         in-canopy turbulence and resistances for O3 and NO2 uptake on wet 
                         surfaces. These analyses suggest some modification in the 
                         representation of some of the poorly constrained canopy processes 
                         resulting in a significantly better comparison between the 
                         simulated and measured exchange fluxes and concentrations.",
  conference-location = "Vienna, Austria",
      conference-year = "17-22 apr.",
             language = "en",
           targetfile = "wolff_comparison.pdf",
        urlaccessdate = "27 jan. 2021"