Global Three-dimensional Constituent Fields Derived from Profile Data

The success of 3D simulations of stratospheric constituent variability depends critically on the initialization of the constituent fields within the global model. We d•cribe a technique for generating lobal 3D fields from -vertical constituent profiles. The technique uses poten: tial vorticity (q) and potential temperature (O) to map the profries onto the global domain. The profiles used here are obtained from a 2D model calculation that reproduces the relationship between 0, q, N20 and O:, observed uring the Airborne Arctic Stratospheric Expedition (AASE). The method is verified by comparison with satellite data, aircraft data and model simulations.