Abstract
Several jet-stream models have appeared in the literature over roughly the past decade. It is felt that these various models do not adequately describe the isotach patterns in the jet stream under various synoptic conditions and thus are of limited value to an analyst working with limited amounts of data. In the present work, three models of the jet stream are provided based upon 14 flights of Project Jet Stream. In each case, a certain mean pattern of isotachs is associated with the corresponding mean synoptic state of the atmosphere in cross-sectional view. The possibility for practical usage of the models is thus greatly enhanced.
