Improving the Display of Wind Patterns and Ocean Currents
Abstract
Considerable effort has gone into building numerical weather and ocean prediction models during the past 50 years. Less effort has gone into the visual representation of output from those forecast models and many of the techniques used are known to be ineffective. The effectiveness of a data display depends on how well critical patterns can be perceived and this paper outlines a set of perceptual principles for what makes a good representation of a 2D vector field and shows how these principles can be used for the portrayal of currents, winds and waves. Examples are given from a series of evaluation studies into the optimal representation of these variables. The results suggest that for static graphic presentations, equally spaced streamlines may be optimal. If wind barbs are curved to follow streamlines perception of local wind speed and direction as well as the overall pattern is improved. For animated portrayals of model output, animated streamlets can perceptually separate layers of information so that atmospheric pressure and surface temperature can clearly be shown simultaneously with surface winds.
Department
Center for Coastal and Ocean Mapping
Publication Date
10-2014
Volume
95
Journal Title
Bulletin of the American Meterorological Society
Pages
1-9
Publisher Place
Boston, MA, United States
Publisher
American Meteorological Society
Digital Object Identifier (DOI)
10.1175/BAMS-D-13-00135
Document Type
Journal Article
Recommended Citation
C. Ware, Kelley, J. G., and Pilar, D. H. F., “Improving the Display of Wind Patterns and Ocean Currents”, Bulletin of the American Meterorological Society, vol. 95. American Meteorological Society, Boston, MA, pp. 1-9, 2014.