@phdthesis{74131, author = {T. Davies}, title = {Potential vorticity perspective of model validation}, year = {1992}, journal = {Seminar on Validation of models over Europe, 7-11 September 1992}, volume = {I}, pages = {117-152}, month = {1992}, publisher = {ECMWF}, address = {Shinfield Park, Reading}, language = {eng}, }