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Mid-latitude Tropospheric Ozone Columns from the Mozaic Program: Climatology and Interannual Variability : Volume 6, Issue 4 (31/03/2006)

By Zbinden, R. M.

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Book Id: WPLBN0003994380
Format Type: PDF Article :
File Size: Pages 21
Reproduction Date: 2015

Title: Mid-latitude Tropospheric Ozone Columns from the Mozaic Program: Climatology and Interannual Variability : Volume 6, Issue 4 (31/03/2006)  
Author: Zbinden, R. M.
Volume: Vol. 6, Issue 4
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Thouret, V., Cammas, J., Simon, P., Nédélec, P., Zbinden, R. M., & Karcher, F. (2006). Mid-latitude Tropospheric Ozone Columns from the Mozaic Program: Climatology and Interannual Variability : Volume 6, Issue 4 (31/03/2006). Retrieved from

Description: Laboratoire d’Aérologie, UMR5560, Toulouse, France. 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 1995–2001 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.

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


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