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@ARTICLE{Schaeler:30239,
      author       = {Schaeler, B. and Offermann, D. and Hoffmann, L. and Riese,
                      M.},
      title        = {{A} case study of trace gas transports near the tropopause},
      journal      = {Advances in space research},
      volume       = {33},
      issn         = {0273-1177},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-30239},
      pages        = {1053 - 1057},
      year         = {2004},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The CRISTA experiment provided global measurements of
                      atmospheric trace gases in the stratosphere and upper
                      troposphere during its second mission in August 1997. A new
                      data product has recently been developed, yielding water
                      vapor mixing ratios around the tropopause. The high data
                      density of CRISTA makes an efficient assimilation of the
                      water vapor field (by means of the NCAR ROSE CTM) possible.
                      From these data turbulent trace gas fluxes upsilon'chi' are
                      derived. The global distribution of the H2O fluxes is found
                      to be highly structured at a given pressure level. Zonal
                      means of fluxes indicate transport barriers at the equator
                      and near the tropopause. This is compared to effective
                      diffusivities of P. Haynes and E. Shuckburgh [J. Geophys.
                      Res. 105 (2000) 22795] and general agreement is obtained.
                      There is one important discrepancy, though: the effective
                      diffusivities show a transequatorial "bridge" at about 350 K
                      potential temperature (about 12 km), a "bridge" which is
                      also seen in the CRISTA water vapor data, but at a
                      considerably higher altitude. This finding is confirmed by
                      ozone data from CRISTA and from UARS. (C) 2003 COSPAR.
                      Published by Elsevier Ltd. All rights reserved.},
      keywords     = {S (WoSType)},
      cin          = {ICG-I},
      ddc          = {520},
      cid          = {I:(DE-Juel1)VDB47},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Engineering, Aerospace / Astronomy $\&$ Astrophysics /
                      Geosciences, Multidisciplinary / Meteorology $\&$
                      Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000222000000007},
      doi          = {10.1016/S0273-1177(03)00588-X},
      url          = {https://juser.fz-juelich.de/record/30239},
}