Ozone in the remote troposphere: mixing versus photochemistry

Chatfield, R. B.; Harrison, Halstead

doi:10.1029/jc081i003p00421

Cited by 43 publications

(19 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given the substantial stratospheric ozone concentrations, transport from the stratosphere was long thought to be the dominant source of ozone in the troposphere (Danielsen, 1968;Junge, 1962;Fabian and Pruchniewicz, 1977;Chatfield and Harrison, 1976). Photochemical mechanisms for the generation of ozone were first identified in work carried out in California in the 1950s (Haagen-Smit, 1952), and until the 1970s high ozone was thought to be a local phenomenon associated with air pollution (Leighton, 1961).…”

Section: What Controls Ozone?mentioning

confidence: 99%

Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer

et al. 2015

View full text Add to dashboard Cite

Abstract. Ozone holds a certain fascination in atmospheric science. It is ubiquitous in the atmosphere, central to tropospheric oxidation chemistry, yet harmful to human and ecosystem health as well as being an important greenhouse gas. It is not emitted into the atmosphere but is a byproduct of the very oxidation chemistry it largely initiates. Much effort is focused on the reduction of surface levels of ozone owing to its health and vegetation impacts, but recent efforts to achieve reductions in exposure at a country scale have proved difficult to achieve owing to increases in background ozone at the zonal hemispheric scale. There is also a growing realisation that the role of ozone as a short-lived climate pollutant could be important in integrated air quality climate change mitigation. This review examines current understanding of the processes regulating tropospheric ozone at global to local scales from both measurements and models. It takes the view that knowledge across the scales is important for dealing with air quality and climate change in a synergistic manner. The review shows that there remain a number of clear challenges for ozone such as explaining surface trends, incorporating new chemical understanding, ozone-climate coupling, and a better assessment of impacts. There is a clear and present need to treat ozone across the range of scales, a transboundary issue, but with an emphasis on the hemispheric scales. New observational opportunities are offered both by satellites and small sensors that bridge the scales.

show abstract

Section: What Controls Ozone?mentioning

confidence: 99%

Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The role of photochemistry in controlling the production of tropospheric ozone was therefore questioned Walker, 1973, 1976). The controversy that arose from proponents of a tropospheric ozone budget dominated by stratospheric-origin downward transport (Fabian, 1974;Chatfield and Harrison, 1976) was anchored in the inability to clarify which, of stratospheric flux or photochemical production, was responsible for the spring-summer lower tropospheric ozone maximum. The quantitative assessment of the cross-tropopause mass fluxes of ozone and other chemical constituents is of major importance for atmospheric chemistry and climate.…”

Section: Introductionmentioning

confidence: 99%

Mid-latitude tropospheric ozone columns from the MOZAIC program: climatology and interannual variability

et al. 2006

View full text Add to dashboard Cite

Abstract. Several thousands of ozone vertical profiles collected in the course of the MOZAIC programme (Measurements of Ozone, Water Vapour, Carbon Monoxide and Nitrogen Oxides by In-Service Airbus Aircraft) from August 1994 to February 2002 are investigated to bring out climatological and interannual variability aspects. The study is centred on the most frequently visited MOZAIC airports, i.e. Frankfurt (Germany), Paris (France), New York (USA) and the cluster of Tokyo, Nagoya and Osaka (Japan). The analysis focuses on the vertical integration of ozone from the ground to the dynamical tropopause and the vertical integration of stratospheric-origin ozone throughout the troposphere. The characteristics of the MOZAIC profiles: frequency of flights, accuracy, precision, and depth of the troposphere observed, are presented. The climatological analysis shows that the Tropospheric Ozone Column (TOC) seasonal cycle ranges from a wintertime minimum at all four stations to a spring-summer maximum in Frankfurt, Paris, and New York. Over Japan, the maximum occurs in spring presumably because of the earlier springtime sun. The incursion of monsoon air masses into the boundary layer and into the mid troposphere then steeply diminishes the summertime value. Boundary layer contributions to the TOC are 10% higher in New York than in Frankfurt and Paris during spring and summer, and are 10% higher in Japan than in New York, Frankfurt and Paris during autumn and early spring. Local and remote anthropogenic emissions, and biomass burning over upstream regions of Asia may be responsible for the larger low-and mid-tropospheric contributions to the tropospheric ozone column over Japan throughout the year except during the summer-monsoon season. A simple Lagrangian analysis has shown that a minimum of 10% of the TOC is of stratospheric-origin throughout the year. Investigation of the short-term trends of the TOC over the period [1995][1996][1997][1998][1999][2000][2001] Correspondence to: R. M. Zbinden (zbir@aero.obs-mip.fr) shows a linear increase 0.7%/year in Frankfurt, 0.8%/year in Japan, 1.1%/year in New York and 1.6%/year in Paris for the reduced 1995-1999 period. Dominant ingredients of these positive short-term trends are the continuous increase of wintertime tropospheric ozone columns from 1996 to 1999 and the positive contributions of the mid troposphere whatever the season.

show abstract

“…However, close examination of the Before the diurnal variations can be studied, it is necessary distribution of data with latitude does not reveal any systemto remove, as well as possible, variations due to all other atic bias. At 4-5 km, at 43.5øN, the data given by Chatfield and Harrison [1976] show that the midday mean ozone is about 0.01 #g g-• (6 ppbv) larger than the 1200 UT (0700 EST) mean ozone. It was shown in Figure 1 that ozone is well correlated bution of observations at 30-50 hPa below the tropopause for large distances in the east-west direction, and successive from 32 ø to 48 øN.…”

Section: Figure 4 Shows the Ozone Mixing Ratio Data As A Function Of mentioning

confidence: 93%

Ozone in the upper troposphere from gasp measurements

Nastrom¹

1979

J. Geophys. Res.

View full text Add to dashboard Cite

Several aspects of tropospheric ozone variations are examined by using ozone measurements made from commercial airliners (Gasp data). The east‐west variations of ozone have a predominant wavelength near 2400 km, by visual inspection of the autocorrelation function, while temperature and wind have predominant wavelengths near 3300 km. The different wavelengths may be due to a sampling bias. Distance‐lagged correlation functions of ozone with temperature and wind show a definite periodicity with wavelengths near 2400 km. The low correlation of ozone with meridional wind speed at lag zero makes it necessary to have many pairs of data to estimate even the sign of the meridional ozone flux with confidence. Tropical tropospheric ozone values above 100 parts per billion by volume (ppbv) appear to be associated with meridional transport from middle latitudes, and in some cases, relatively large tropical ozone values are coincident with clouds. A diurnal variation with amplitude near 2.0 ppbv is found with phase (time of maximum value) near 0800 LT at 32°–64°N but with phase near 1700 LT at 16°–32°N.

show abstract

Ozone in the remote troposphere: mixing versus photochemistry

Cited by 43 publications

References 6 publications

Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer

Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer

Mid-latitude tropospheric ozone columns from the MOZAIC program: climatology and interannual variability

Ozone in the upper troposphere from gasp measurements

Contact Info

Product

Resources

About