Effective Flow Visualization

(NOT Modeling)Colin Ware

VisLab CCOM UNH

StaffKurt Schwehr (Google Earth, COF)Roland Arsenault (GeoZui4D)Briana Sullivan (Flow vis)Matt Plumlee (COF)StudentsPete Mitchell (Flow vis)Stephan Schaeffer (Flow vis)Dan Pineo (Flow vis).

We can do better than this

2D Flow visualization• A landmark study Laidlaw et al

- Image courtesy of D.Laidlaw et al. (2001)

OrientVSBMagnitude

Perceptually optimize forSome sub-set of task

requirements

An optimization process (NSF ITR)

Identify a visualizationMethod and a paramaterization

Streaklets:A generalizedFlow vis technique

Characterize solutions

Define task requirementsAdvection path perceptio

Magnitude perceptionDirection perception

Human In the Loop

Actual solutionsGuidelinesAlgorithmsTheory

Production software

Flow Model GriddedFlow

InteractiveDesigner

Renderer

Source fileRegionBackgroundEtc

Renderingparms

Images

ObjectiveTest Module

Grib2, NetCDF

Ofs modelsFVCOMHYCOMetc

Config

Next stepsIntegration into NowCoast with geotifoutputAnimated output

Next steps3D flow vis and marine mammals

Marine Mammals and Currents

Flow directionInternal wavesFronts

3D Flow Visualization Package for Operational Forecast Models

Status: Has 3D/2D modes.Particle dye poles.Streaklet Field or Particle fieldTemp/salinity profilesWorks with space mouse.

Plans

Flow Model GriddedFlow DB

BiologicalData

VisualizationAnd Analysis

Images

and

Statistics

Plans

Integrated Atmospheric and Ocean flow visualization. (Carlos Lozano, NCEP)Integrating flow models with behavior data (e.g. whales).

Interactive exhibits

ToolsDyepotsStreaklet flields (for overall patterns)

Each streaklet is a pathline traversed as time progresses – can be moved up and down

StreakPots to emphaize major currentsSize Pots – equatorial upwelling

Can be used to “paint” in the flow model and reveal flow patterns