Can a global model reproduce observed trends in summertime surface ozone levels?

Koumoutsaris, S.; Bey, I.
August 2012
Atmospheric Chemistry & Physics;2012, Vol. 12 Issue 15, p6983
Academic Journal
Quantifying trends in surface ozone concentrations is critical for assessing pollution control strategies. Here we use observations and results from a global chemical transport model to examine the trends (1991-2005) in daily maximum 8-h average concentrations in summertime surface ozone at rural sites in Europe and the United States (US). We find a decrease in observed ozone concentrations at the high end of the probability distribution at many of the sites in both regions. The model attributes these trends to a decrease in local anthropogenic ozone precursors, although simulated decreasing trends are overestimated in comparison with observed ones. The low end of observed distribution show small upward trends over Europe and the western US and downward trends in Eastern US. The model cannot reproduce these observed trends, especially over Europe and the western US. In particular, simulated changes between the low and high end of the distributions in these two regions are not significant. Sensitivity simulations indicate that emissions from far away source regions do not affect significantly summer ozone trends at both ends of the distribution in both Europe and US. Possible reasons for discrepancies between observed and simulated trends are discussed


Related Articles

  • Future Projection of Extreme Heavy Snowfall Events With a 5‐km Large Ensemble Regional Climate Simulation. Sasai, T.; Kawase, H.; Kanno, Y.; Yamaguchi, J.; Sugimoto, S.; Yamazaki, T.; Sasaki, H.; Fujita, M.; Iwasaki, T. // Journal of Geophysical Research. Atmospheres;12/27/2019, Vol. 124 Issue 24, p13975 

    We have recently experienced several heavy snowfall events, but still do not sufficiently understand how global warming will impact changes in local extreme snowfall events. The analysis relevant to the extreme events requires ensemble experiments with high‐resolution regional climate...

  • Changes in extratropical storm track cloudiness 1983-2008: observational support for a poleward shift. Bender, Frida; Ramanathan, V.; Tselioudis, George // Climate Dynamics;May2012, Vol. 38 Issue 9/10, p2037 

    Climate model simulations suggest that the extratropical storm tracks will shift poleward as a consequence of global warming. In this study the northern and southern hemisphere storm tracks over the Pacific and Atlantic ocean basins are studied using observational data, primarily from the...

  • Simulating river discharge in a snowy region of Japan using output from a regional climate model. Ma, X.; Kawase, H.; Adachi, S.; Fujita, M.; Takahashi, H. G.; Hara, M.; Ishizaki, N.; Yoshikane, T.; Hatsushika, H.; Wakazuki, Y.; Kimura, F. // Advances in Geosciences;2013, Vol. 35, p55 

    Snowfall amounts have fallen sharply along the eastern coast of the Sea of Japan since the mid-1980s. Toyama Prefecture, located approximately in the center of the Japan Sea region, includes high mountains of the northern Japanese Alps on three of its sides. The scarcity of meteorological...

  • An improved simple snow-atmosphere-soil transfer model. Liu, HuiZhi; Zhai, XiaoDong; Sun, ShuFen; Feng, JianWu; Wang, Lei // SCIENCE CHINA Earth Sciences;Jul2012, Vol. 55 Issue 7, p1206 

    On the basis of a simple snow-atmosphere-soil transfer (SAST) model previously developed, this paper presents an improved snow-atmosphere-soil transfer (ISAST) model that has a new numerical scheme and an improved method of layering the snowpack. The new model takes the snow cover temperature...

  • Evaluation of ACCMIP outgoing longwave radiation from tropospheric ozone using TES satellite observations. Bowman, K. W.; Shindell, D. T.; Worden, H. M.; Lamarque, J. F.; Young, P. J.; Stevenson, D. S.; Qu, Z.; de la Torre, M.; Bergmann, D.; Cameron-Smith, P. J.; Collins, W. J.; Doherty, R.; Dalsøren, S. B.; Faluvegi, G.; Folberth, G.; Horowitz, L. W.; Josse, B. M.; Lee, Y. H.; MacKenzie, I. A.; Myhre, G. // Atmospheric Chemistry & Physics;2013, Vol. 13 Issue 8, p4057 

    We use simultaneous observations of tropospheric ozone and outgoing longwave radiation (OLR) sensitivity to tropospheric ozone from the Tropospheric Emission Spectrometer (TES) to evaluate model tropospheric ozone and its effect on OLR simulated by a suite of chemistry-climate models that...

  • On the dependence of the OH* Meinel emission altitude on vibrational level: SCIAMACHY observations and model simulations. von Savigny, C.; McDade, I. C.; Eichmann, K.-U.; Burrows, J. P. // Atmospheric Chemistry & Physics Discussions;2012, Vol. 12 Issue 2, p5817 

    Measurements of the OH Meinel emissions in the terrestrial nightglow are one of the standard ground-based techniques to retrieve upper mesospheric temperatures. It is often assumed that the emission peak altitudes are not strongly dependent on the vibrational level, although this assumption is...

  • Regional, Very Heavy Daily Precipitation in CMIP5 Simulations. KAWAZOE, SHO; GUTOWSKI JR., WILLIAM J. // Journal of Hydrometeorology;Aug2013, Vol. 14 Issue 4, p1228 

    The authors analyze the ability of global climate models (GCMs) from phase 5 of the Coupled Model Intercomparison Project (CMIP5) multimodel ensemble to simulate very heavy daily precipitation and its supporting processes, comparing them with observations. Their analysis focuses on an upper...

  • Improved simulation of tropospheric ozone by a global-multi-regional two-way coupling model system. Y. -Y. Yan; J. -T. Lin; J. Chen; L. Hu // Atmospheric Chemistry & Physics;2015, Vol. 15 Issue 19, p25789 

    Small-scale nonlinear chemical and physical processes over pollution source regions affect the global ozone (O3) chemistry, but these processes are not captured by current global chemical transport models (CTMs) and chemistry-climate models that are limited by coarse horizontal resolutions...

  • Persistence and photochemical decay of springtime total ozone anomalies in the Canadian Middle Atmosphere Model. Tegtmeier, S.; Shepherd, T. G. // Atmospheric Chemistry & Physics;2007, Vol. 7 Issue 2, p485 

    The persistence and decay of springtime total ozone anomalies over the entire extratropics (midlatitudes plus polar regions) is analysed using results from the Canadian Middle Atmosphere Model (CMAM), a comprehensive chemistry-climate model. As in the observations, interannual anomalies...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics