@article{RISI12_JGR_2,
   author = "C. Risi and D. Noone and J. Worden and C. Frankenberg and
             G. Stiller and M. Kiefer and B. Funke and K. Walker and
             P. Bernath and M. Schneider and S. Bony and J. Lee and
             D. Brown and C. Sturm",
   title  = "Process-evaluation of tropospheric humidity simulated by general
             circulation models using water vapor isotopic observations:
             2. {U}sing isotopic diagnostics to understand the mid and upper
             tropospheric moist bias in the tropics and subtropics",
   journal= "J. Geophys. Res.",
   volume = "117",
   number = "D5",
   eid    = "D05304",
   doi    = "10.1029/2011JD016623",
   year   = "2012"   }