@Article{acp-7-3399-2007,
AUTHOR = {Christensen, T. and Knudsen, B. M. and Pommereau, J.-P. and Letrenne, G. and Hertzog, A. and Vial, F. and Ovarlez, J. and Piot, M.},
TITLE = {Evaluation of ECMWF ERA-40 temperature and wind in the lower tropical stratosphere  since 1988 from past long-duration balloon measurements},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {13},
PAGES = {3399--3409},
URL = {http://www.atmos-chem-phys.net/7/3399/2007/},
ISSN = {1680-7316}
}