Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 8 4 2008 10.5194/acpd-8-15997-2008 http://www.atmos-chem-phys-discuss.net/8/15997/2008/ http://www.atmos-chem-phys-discuss.net/8/15997/2008/acpd-8-15997-2008.html http://www.atmos-chem-phys-discuss.net/8/15997/2008/acpd-8-15997-2008.pdf 15997 16025 2008-08-21 Ship emitted NO₂ in the Indian Ocean: comparison of model results with satellite data K. Franke A. Richter H. Bovensmann V. Eyring P. Jöckel J. P. Burrows University of Bremen, Institute for Environmental Physics, Bremen, Germany Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany Max Planck Institute for Chemistry, Mainz, Germany An inventory of NO_x emission from international shipping has been evaluated by comparing NO₂ tropospheric columns derived from the satellite instruments SCIAMACHY (January 2003 to February 2008), GOME (January 1996 to June 2003), and GOME-2 (March 2007 to February 2008) to NO₂ columns calculated with the atmospheric chemistry general circulation model ECHAM5/MESSy1 (January 2000 to October 2005). The data set from SCIAMACHY yields the first monthly analysis of ship induced NO₂ enhancements in the Indian Ocean. For both data and model consistently the tropospheric excess method was used to obtain mean NO₂ columns over the shipping lane from India to Indonesia, and over two ship free regions, the Bay of Bengal and the central Indian Ocean. In general, the model simulates the differences between the regions affected by ship pollution and ship free regions reasonably well. Minor discrepancies between model results and satellite data were identified during biomass burning seasons in March to May over India and the Indochinese Peninsula and August to October over Indonesia. We conclude that the NO_x ship emission inventory used in this study is a good approximation of NO_x ship emissions in the Indian Ocean for the years 2002 to 2007. It assumes that around 6 Tg(N) yr^−1 are emitted by international shipping globally, resulting in 90 Gg(N) yr^−1 in the region of interest when using Automated Mutual Assistance Vessel Rescue System (AMVER) or 72 Gg(N) yr^−1 when using the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) as spatial proxy. The results do not support some previously published lower ship emissions estimates of 3–4 Tg(N) yr^−1 globally, making this study the first that evaluates atmospheric response to NO_x ship emission estimates from space. Beirle, S., Platt, U., von Glasow, R., Wenig, M., and Wagner, T.: Estimate of nitrogen oxide emissions from shipping by satellite remote sensing, Geophys. Res. Lett., 31, L18102, doi:10.1029/2004GL020312, 2004. Bovensmann, H., Burrows, J., Buchwitz, M., Frerick, J., Noël, S., Rozanov, V., Chance, K., and Goede, A.: SCIAMACHY: Mission Objectives and Measurement Modes, J. Atmos. Sci., 56, 127–150, 1999. Brewer, A., McElroy, C., and Kerr, J.: Nitrogen dioxide concentrations in the atmosphere, Nature, 246, 129–133, 1973. Burrows, J., Hölzle, E., Goede, A., Visser, H., and Fricke, W.: SCIAMACHY–-scanning imaging absorption spectrometer for atmospheric chartography, Acta Astronaut., 35, 445–451, 1995. Burrows, J., Weber, M., Buchwitz, M., et~al.: The Global Ozone Monitoring Experiment (GOME): Mission Concept and First Scientific Results, J. Atmos. Sci., 56, 151–175, 1999. Callies, J., Corpaccioli, E., Eisinger, M., Hahne, A., and Lefebvre, A.: GOME-2- Metop's second-generation sensor for operational ozone monitoring, ESA Bull., 102, 28–36, 2000. Corbett, J., Fischbeck, P., and Pandis, S.: Global nitrogen and sulfur inventories for oceangoing ships, J. Geophys. Res., 104, 3457–3470, 1999. Corbett, J J. and Koehler, H W.: Updated emissions from ocean shipping, J. Geophys. Res., 108, 4650, 2003. Davis, D., Grodzinsky, G., Kasibhatla, P., Crawford, J., Chen, G., Liu, S., Bandy, A., Thornton, D., Guan, H., and Sandholm, S.: Impact of ship emissions on marine boundary layer NO_x and SO₂ distributions over the Pacific basin, Geophys. Res. Lett., 28, 235–238, 2001. Emmons, L., Hauglustaine, D., Mueller, J., Carroll, M., Brasseur, G., Brunner, D., Staehelin, J., Thouret, V., and Marenco, A.: Data composites of airborne observations of tropospheric ozone and its precursors, J. Geophys. Res., 105, 20 497–20 538, 2000. Endresen, Ø., Sørgård, E., Sundet, J., Dalsøren, S., Isaksen, I., Berglen, T., and Gravir, G.: Emission from international sea transportation and environmental impact, J. Geophys. Res., 108, 4560, 2003. Eyring, V., Köhler, H W., van Aardenne, J., and Lauer, A.: Emissions from international shipping: 1. The last 50 years, J. Geophys. Res., 110, D17305, doi:10.1029/2004JD005619, 2005. Eyring, V., Stevenson, D S., Lauer, A., Dentener, F J., Butler, T., Collins, W J., Ellingsen, K., Gauss, M., Hauglustaine, D A., Isaksen, I. S A., Lawrence, M G., Richter, A., Rodriguez, J M., Sanderson, M., Strahan, S E., Sudo, K., Szopa, S., van Noije, T. P C., and Wild, O.: Multi-model simulations of the impact of international shipping on Atmospheric Chemistry and Climate in 2000 and 2030, Atmos. Chem. Phys., 7, 757–780, 2007. Fearnleys: Fearnleys Review 2007, The Tanker and Bulk Markets and Fleets, Tech. Rep., Oslo, 2007. Franke, K., Eyring, V., Sander, R., Hendricks, J., Lauer, A., and Sausen, R.: Toward effective emissions of ships in global models, Meteorol. Z., 17, 117–129, 2008. Jöckel, P., Tost, H., Pozzer, A., Brühl, C., Buchholz, J., Ganzeveld, L., Hoor, P., Kerkweg, A., Lawrence, M., Sander, R., Steil, B., Stiller, G., Tanarhte, M., Taraborrelli, D., van Aardenne, J., and Lelieveld, J.: The atmospheric chemistry general circulation model ECHAM5/MESSy1: consistent simulation of ozone from the surface to the mesosphere, Atmos. Chem. Phys., 6, 5067–5104, 2006. Kasibhatla, P., Levy, H., Moxim, W., Pandis, S., Corbett, J., Peterson, M., Honrath, R., Frost, G., Knapp, K., Parrish, D., and Ryerson, T.: Do emissions from ships have a significant impact on concentrations of nitrogen oxides in the marine boundary layer?, Geophys. Res. Lett., 27, 2229–2232, 2000. Kunhikrishnan, T. and Lawrence, M.: Sensitivity of NO_x over the Indian Ocean to emissions from the surrounding continents and nonlinearities in atmospheric chemistry responses, Geophys. Res. Lett., 31, L15109, doi:10.1029/2004GL020210, 2004. Lauer, A., Dameris, M., Richter, A., and Burrows, J P.: Tropospheric NO₂ columns: a comparison between model and retrieved data from GOME measurements, Atmos. Chem. Phys., 2, 67–78, 2002. Lawrence, M. and Crutzen, P.: Influence of NO$_\mathrmx$ emissions from ships on tropospheric photochemistry and climate, Nature, 402, 167–170, 1999. Noxon, J.: Nitrogen dioxide in the stratosphere and tropsphere as measured by ground-based absoption spectroscopy, Science, 189, 547–549, 1975. Olivier, J. and Berdowsky, J.: Global emission sources and sinks, in: The Climate System, edited by: Berdowski, J., Guicherit, R., and Heij, B., 33–77, A. A. Balkema Publishers/Swets & Zeitlinger Publishers, Lisse, The Netherlands, 2001. Olivier, J. G J., van Aardenne, J A., Dentener, F., Ganzeveld, L., and Peters, J. A. H W.: Recent trends in global greenhouse gas emissions: regional trends and spatial distribution of key sources, in: Non-CO2 Greenhouse Gases (NCGG-4), edited by: van Amstel, A., 325–330, Millpress, Rotterdam, ISBN 90 5966 043 9, 2005. Platt, U., Perner, D., and Pätz, H.: Simultaneous measurement of atmospheric CH$2$O, O₃, and NO 2 by differential optical absorption, J. Geophys. Res., 84, 6329–6335, 1979. Pozzer, A., Jöckel, P., Tost, H., Sander, R., Ganzeveld, L., Kerkweg, A., and Lelieveld, J.: Simulating organic species with the global atmospheric chemistry general circulation model ECHAM5/MESSy1: a comparison of model results with observations, Atmos. Chem. Phys., 7, 2527–2550, 2007. Richter, A. and Burrows, J.: Tropospheric NO$_\mathrm2$ from GOME measurements, Adv. Space Res., 29, 1673–1683, 2002. Richter, A., Eyring, V., Burrows, J., Bovensmann, H., Lauer, A., Sierk, B., and Crutzen, P.: Satellite measurements of NO$_\mathrm2$ from international shipping emissions, Geophys. Res. Lett., 31, L23110, doi:10.1029/2004GL020822, 2004. Song, C., Chen, G., Hanna, S., Crawford, J., and Davis, D.: Dispersion and chemical evolution of ship plumes in the marine boundary layer: Investigation of O$_\mathrm3$/NO$_\mathrmy$/HO$_\mathrmx$ chemistry, J. Geophys. Res., 108, 4143, doi:10.1029/2002JD002216, 2003. Wang, C., Corbett, J., and Firestone, J.: Improving Spatial Representation of Global Ship Emissions Inventories, Environ. Sci. Technol., 42, 193–199, 2008.