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@ARTICLE{Gaudel:845669,
      author       = {Gaudel, A. and Cooper, O. R. and Ancellet, G. and Barret,
                      B. and Boynard, A. and Burrows, J. P. and Clerbaux, C. and
                      Coheur, P. -F. and Cuesta, J. and Cuevas, E. and Doniki, S.
                      and Dufour, G. and Ebojie, F. and Foret, G. and Garcia, O.
                      and Granados Muños, M. J. and Hannigan, J. W. and Hase, F.
                      and Huang, G. and Hassler, B. and Hurtmans, D. and Jaffe, D.
                      and Jones, N. and Kalabokas, P. and Kerridge, B. and
                      Kulawik, S. S. and Latter, B. and Leblanc, T. and Le
                      Flochmoën, E. and Lin, W. and Liu, J. and Liu, X. and
                      Mahieu, E. and McClure-Begley, A. and Neu, J. L. and Osman,
                      M. and Palm, M. and Petetin, H. and Petropavlovskikh, I. and
                      Querel, R. and Rahpoe, N. and Rozanov, A. and Schultz,
                      Martin and Schwab, J. and Siddans, R. and Smale, D. and
                      Steinbacher, M. and Tanimoto, H. and Tarasick, D. W. and
                      Thouret, V. and Thompson, A. M. and Trickl, T. and
                      Weatherhead, E. and Wespes, C. and Worden, H. M. and
                      Vigouroux, C. and Xu, X. and Zeng, G. and Ziemke, J.},
      title        = {{T}ropospheric {O}zone {A}ssessment {R}eport: {P}resent-day
                      distribution and trends of tropospheric ozone relevant to
                      climate and global atmospheric chemistry model evaluation},
      journal      = {Elementa},
      volume       = {6},
      number       = {1},
      issn         = {2325-1026},
      address      = {Washington, DC},
      publisher    = {BioOne},
      reportid     = {FZJ-2018-02881},
      pages        = {39 -},
      year         = {2018},
      abstract     = {The Tropospheric Ozone Assessment Report (TOAR) is an
                      activity of the International Global Atmospheric Chemistry
                      Project. This paper is a component of the report, focusing
                      on the present-day distribution and trends of tropospheric
                      ozone relevant to climate and global atmospheric chemistry
                      model evaluation. Utilizing the TOAR surface ozone database,
                      several figures present the global distribution and trends
                      of daytime average ozone at 2702 non-urban monitoring sites,
                      highlighting the regions and seasons of the world with the
                      greatest ozone levels. Similarly, ozonesonde and commercial
                      aircraft observations reveal ozone’s distribution
                      throughout the depth of the free troposphere. Long-term
                      surface observations are limited in their global spatial
                      coverage, but data from remote locations indicate that ozone
                      in the 21st century is greater than during the 1970s and
                      1980s. While some remote sites and many sites in the heavily
                      polluted regions of East Asia show ozone increases since
                      2000, many others show decreases and there is no clear
                      global pattern for surface ozone changes since 2000. Two new
                      satellite products provide detailed views of ozone in the
                      lower troposphere across East Asia and Europe, revealing the
                      full spatial extent of the spring and summer ozone
                      enhancements across eastern China that cannot be assessed
                      from limited surface observations. Sufficient data are now
                      available (ozonesondes, satellite, aircraft) across the
                      tropics from South America eastwards to the western Pacific
                      Ocean, to indicate a likely tropospheric column ozone
                      increase since the 1990s. The 2014–2016 mean tropospheric
                      ozone burden (TOB) between 60˚N–60˚S from five satellite
                      products is 300 Tg ± $4\%.$ While this agreement is
                      excellent, the products differ in their quantification of
                      TOB trends and further work is required to reconcile the
                      differences. Satellites can now estimate ozone’s global
                      long-wave radiative effect, but evaluation is difficult due
                      to limited in situ observations where the radiative effect
                      is greatest.},
      cin          = {IEK-8 / JSC},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)JSC-20090406},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243) / 512 - Data-Intensive
                      Science and Federated Computing (POF3-512) / Earth System
                      Data Exploration (ESDE)},
      pid          = {G:(DE-HGF)POF3-243 / G:(DE-HGF)POF3-512 /
                      G:(DE-Juel-1)ESDE},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000431754000001},
      doi          = {10.1525/elementa.291},
      url          = {https://juser.fz-juelich.de/record/845669},
}