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Dynamic Data Visualization of Meteorological Data Presented at ASA-JSM 2006
Data Exposition Sponsored by the ASA Sections on Statistical Graphics,
Statistical Computing, and Statistics and the Environment.
Bruce Peterson, TeraStat
[email protected] Copyright 2006
Background
This poster is in response to the Data Exposition sponsored by the ASA Sections on Statistical Graphics, Statistical Computing, and Statistics and the
Environment.
The competition provided a data set of geographic and atmospheric data
from NASA and entrants were asked to provide a graphical summary of the important features of the data set.
Dynamic Data Visualization of Meteorological Data
ASA JSM Seattle 2006
Bruce Peterson, TeraStat, Inc.
Patent Pending copyright 2006
Derived attribute: Insolation aggregates cloud cover data
Insolation = 100 - max(low cloud, mid cloud, high cloud)
Air and surface temperatures are correlatedOzone concentrations show strong seasonal pattern
NASA Data Sectors
Elevation Number of Sectors Percent
Sea Level 305 53.0
Sea Level to 100 M 91 15.8
100 M to 300 M 65 11.3
300 M to 1000 M 61 10.6
1000 M to 3000 M 46 8.0
Over 3000 M 8 1.4
Subset by Elevation
Most NASA data sectors are ocean. To explore thebehavior of ozone, sectors above sea level wereexamined.The effect of elevation on attribute dynamics wasexamined by grouping observations by elevation.Sectors with elevations in bold are used in followingvisualization.
Elevations100 to 300 M300 to 1000 M1000 to 3000 M
Sectors Visualized
NASA Data
Sectors
Preliminary examination of NASA data shows anomalies.
The scatter plot indicates that pressure measurements
changed in mid 1998
Derived Attributes:
Temperature Differential= Air Temperature
Cloud cover appears hierarchical
Upper level cloud cover may be obscured by low level
clouds
Derived Attribute: AirSurfDif, difference of air and surface
temperatures.
AirSurfDif=Air temperature - surface temperature
Dynamic Data Visualization of Meteorological Data ASA JSM Seattle 2006
Bruce Peterson, TeraStat, Inc.
copyright 2006
1998 Autumnal Equinox1000 to 3000 Meters Elevation
Barometric
Pressure
Axis
Air-Surface
Temperature
Difference
Axis
Ozone
ConcentrationAxis
Visual Filter:
Logs entity entry
and exit
Sector Entity:Color denotes
insolation
History Trace:Length is velocityof change
Elevation over 3000 meters
CelInterpretation
Key
Mapping Data Attributes to Animation
Attributes
Animation Entities:
Observation sector
Animation Sequencing:
Monthly date (imputation of daily values)
Animation Spatial coordinates:
X coordinate - AirSurfDifference
Y coordinate - Ozone concentration
Z coordinate - Barometric Pressure
Entity Color:
Insolation
Dynamic Data Visualization of Meteorological Data
ASA JSM Seattle 2006
Bruce Peterson, TeraStat, Inc. [email protected]
Patent Pending
copyright 2006
