Distribution and origin of ozone in the eastern Mediterranean free troposphere during MINOS (August 2001) G.-J. Roelofs, B. Scheeren , J. Heland, H. Ziereis, and J. Lelieveld Institute for Marine and Atmospheric Research, Utrecht University, 3508 TA Utrecht, The Netherlands Institute for Atmospheric Physics, Deutsches Zentrum für Luftund Raumfahrt, Oberpfaffenhofen, Germany Max Planck Institute...

Vertical ozone profiles measured in the period 1996–2002 in the framework of the MOZAIC project (Measurement of Ozone and Water Vapor by Airbus in Service Aircraft) for flights connecting Central Europe to the Eastern Mediterranean basin (Heraklion, Rhodes, Antalya) were analysed in order to evaluate the high rural ozone levels recorded in the Mediterranean area during summertime. The 77 flight...

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Tropospheric ozone levels around urban and suburban areas at Europe and North America had increased during 80's-90's, until the application of NO(x) reduction strategies. However, as it was expected, this ozone depletion was not proportional to the emissions reduction. On the other hand, rural ozone levels show different trends, with peaks reduction and average increments; this different evolut...

Global impact of road traffic emissions on tropospheric ozone S. Matthes, V. Grewe, R. Sausen, and G.-J. Roelofs Institut für Physik der Atmosphäre, DLR-Oberpfaffenhofen, Wessling, Germany Institut for Marine Research, University of Utrecht, Utrecht, The Netherlands Received: 15 August 2005 – Accepted: 8 September 2005 – Published: 24 October 2005 Correspondence to: S. Matthes (sigrun.matthes@d...

Tropospheric ozone concentrations regarded as harmful for human health are frequently encountered in Central Europe in summertime. Although ozone formation generally results from precursors transported over long distances, in urban areas local effects, such as reactions due to nearby emission sources, play a major role in determining ozone concentrations. Europe-wide mapping and modeling of pop...

A new lidar instrument has been developed to measure tropospheric ozone and water vapor at low altitude. The lidar uses Raman scattering of an UV beam from atmospheric nitrogen, oxygen, and water vapor to retrieve ozone and water-vapor vertical profiles. By numerical simulation we investigate the sensitivity of the method to both atmospheric and device perturbations. The aerosol optical effect ...

Tropospheric ozone observations over China from 2005 to 2010 at three pressure levels (484, 681 and 825 hPa) from the Tropospheric Emission Spectrometer on board the NASA Aura satellite have been analyzed. Fourier Transform analysis revealed the trends and seasonality of regionally-averaged, monthly-mean ozone concentrations over western, northern and southern China. Significant increases in oz...

We present a new model for the global tropospheric chemistry of inorganic bromine (Bry) coupled to oxidant-aerosol chemistry in the GEOS-Chem chemical transport model (CTM). Sources of tropospheric Bry include debromination of sea-salt aerosol, photolysis and oxidation of short-lived bromocarbons, and transport from the stratosphere. Comparison to a GOME-2 satellite climatology of tropospheric ...

A simulation with the climate-chemistry model (CCM) E39/C is presented, which covers both the troposphere and stratosphere dynamics and chemistry during the period 1960 to 1999. Although the CCM, by its nature, is not exactly representing observed day-by-day meteorology, there is an overall model's tendency to correctly reproduce the variability pattern due to an inclusion of realistic external...