TY  - JOUR
A1  - Scheele, M. P.
A1  - Siegmund, P. C.
A1  - Velthoven, P. F. J.
T1  - Stratospheric age of air computed with trajectories based on various 3D-Var and 4D-Var data sets
JO  - Atmos. Chem. Phys.
J1  - ACP
VL  - 5
IS  - 1
SP  - 1
EP  - 7
Y1  - 2005/01/10
PB  - Copernicus Publications
SN  - 1680-7316
UR  - http://www.atmos-chem-phys.net/5/1/2005/
L1  - http://www.atmos-chem-phys.net/5/1/2005/acp-5-1-2005.pdf
ER  -