% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Ehhalt:34379,
      author       = {Ehhalt, D. H. and Rohrer, F. and Schauffler, S. and
                      Pollock, W.},
      title        = {{T}ritiated water vapor in the stratosphere : vertical
                      profiles and residence time},
      journal      = {Journal of Geophysical Research},
      volume       = {107},
      issn         = {0148-0227},
      address      = {Washington, DC},
      publisher    = {Union},
      reportid     = {PreJuSER-34379},
      pages        = {D24},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {[1] The historic and partly unpublished measurements of the
                      tritium content in stratospheric water vapor made at the
                      National Center for Atmospheric Research between 1975 and
                      1983 are reanalyzed. The resulting vertical profiles of the
                      T content, mainly at 32degreesN latitude, show little
                      variation with altitude above 20 km but a strong decay with
                      time. This decay is a consequence of the large T injections
                      into the stratosphere by the atmospheric tests of high-yield
                      thermonuclear devices prior to 1963 and seems to proceed
                      with a single e-fold time of 5.12 years. Correcting for the
                      radioactive decay of HTO within the stratosphere and for a
                      temporal increase in stratospheric H2O, we obtain a decay
                      time for stratospheric HTO of 7.7 +/- 2.0 years. This decay
                      time, which is solely due to the transport of HTO into the
                      troposphere, is much longer than the age of stratospheric
                      air at these altitudes or the accepted values for
                      stratospheric residence times. The differences are discussed
                      and resolved by interpreting the HTO decay time as the
                      Eigentime of the longest-lived mode of the stratospheric
                      transport equations. This Eigentime should provide a useful
                      constraint in modeling stratospheric transport.},
      keywords     = {J (WoSType)},
      cin          = {ICG-II},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000181253700007},
      doi          = {10.1029/2001JD001343},
      url          = {https://juser.fz-juelich.de/record/34379},
}