Global and zonal tropospheric ozone variations from 2003-2011 as seen by SCIAMACHY

F. Ebojie, J. P. Burrows, C. Gebhardt, A. Ladstätter-Weißenmayer, C. Von Savigny, A. Rozanov, M. Weber, H. Bovensmann

Research output: Contribution to journalArticlepeer-review

Abstract

An analysis of the tropospheric ozone (O3) columns (TOCs) derived from SCIAMACHY limb-nadir-matching (LNM) observations during 2003-2011, focusing on the zonal and global variations in TOC is described. The changes are derived using a multivariate linear regression model. TOC shows a change of -0.2 ± 0.4 % yr-1, 0.3 ± 0.4 % yr-1, 0.1 ± 0.5 % yr-1 and 0.1 ± 0.2 % yr-1, which are not statistically significant at the 2 σ level in the latitude bands 30-50°N, 20°S-0, 0-20°N and 50-30°S, respectively. Tropospheric O3 shows statistically significant increases over some regions of South Asia (1-3 % yr-1), the South American continent (up to 2 % yr-1), Alaska (up to 2 % yr-1) and around Congo in Africa (up to 2 % yr-1). Significant increase in TOC is derived from the continental outflows including those of Australia (up to 2 % yr-1), Eurasia (1-3 % yr-1) and the South America (up to 3 % yr-1). Significant decrease in TOC (up to -3 % yr-1) is observed over some regions of the continents of North America, Europe and South America. Over the Oceanic regions, significant decrease in TOC of about -2 % yr-1 is observed over the outflows of Europe and North America.

Original languageEnglish
Pages (from-to)24085-24130
Number of pages46
JournalAtmospheric Chemistry and Physics Discussions
Volume15
Issue number17
DOIs
Publication statusPublished - Sept 7 2015
Externally publishedYes

ASJC Scopus subject areas

  • Atmospheric Science
  • Space and Planetary Science

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