Aircraft measurement of ozone turbulent flux in the atmospheric boundary layer |
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| Institution: | 1. Physical Research Laboratory (PRL), Ahmedabad, India;2. Indian Institute of Technology, Gandhinagar, India;3. Atmospheric Chemistry Department, Max-Planck Institute for Chemistry, Mainz, Germany;1. Institute of Environmental Engineering, National Chiao Tung University (NCTU), Hsinchu, 30010, Taiwan;2. Physical Research Laboratory, Ahmedabad, 380009, India;3. Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, 263 002, India;4. Pacific Northwest National Laboratory, Richland, WA, USA;5. Atmospheric and Ocean Research Institute, The University of Tokyo, Chiba, 2778568, Japan;6. Argonne National Laboratory, Argonne, Illinois, USA;7. Space Physics Laboratory, Vikram Sarabhai Space Center, Thiruvananthapuram, 695022, India;1. Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA;2. NOAA/NESDIS Advanced Satellite Products Branch Madison, WI 53706, USA;3. Department of Meteorology, San Jose State University, San Jose, CA 95192-0104, USA;1. Marine Biological Section, Department of Biology, University of Copenhagen, Helsingør, Denmark;2. Plant Functional Biology and Climate Change Cluster, University of Technology Sydney, Australia;3. Singapore Centre on Environmental Life Sciences Engineering, School of Biological Sciences, Nanyang Technological University, Singapore;1. LATMOS-IPSL, Sorbonne universités, UPMC université Paris 06, université Versailles St-Quentin, CNRS/INSU, 4, place Jussieu, 75005 Paris, France;2. Spectroscopie de l’atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), 50, avenue Franklin-Delano-Roosevelt, 1050 Bruxelles, Belgium |
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| Abstract: | In May 1995, the “Chimie-Creil 95” experiment was undertaken in the north of France. The field data are first used to validate the methodology for airborne measurement of ozone flux. A certain number of methodological problems due to the location of the fast ozone sensor inside the airplane are, furthermore discussed. The paper describes the instrumentation of the ARAT (Avion de Recherche Atmosphérique et de Télédétection), an atmospheric research and remote-sensing aircraft used to perform the airborne measurements, the area flown over, the meteorological conditions and boundary layer stability conditions. These aircraft measurements are then used to determine ozone deposition velocity and values are proposed for aerodynamic, bulk transfer coefficients (ozone and momentum). The paper also establishes the relationship between the normalised standard deviation and stability parameters (z/L) for ozone, temperature, humidity and vertical velocity. The laws obtained are then presented. |
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