Upload
delilah-hill
View
214
Download
2
Embed Size (px)
Citation preview
Hurricane Visualizations: Modeling Conceptual Change
ESPIRIT II: SVSaturday, March 7th, 2009
Phase 1: Brainstorm – 5 minutesIndividually, describe the
formation and characteristics (e.g., size, season, features, movement, etc.) of Atlantic basin hurricanes using text descriptions and diagrams on the notepad provided
Please print your name in the upper corner of the notepad
Phase II: Collaboration – 5 minutesSelf-aggregate into groups of 3 or
4 based on grade level or content area
Using phase I product, develop a mutually acceptable group representation of hurricane development and characteristics
Select one group member’s notebook to record your understanding – Label as Phase II
Phase III: Web-based VisualizationsMultiple Grade Levels – impact selection
◦ http://scifiles.larc.nasa.gov/kids/Problem_Board/problems/weather/hurricanebasics.swf
◦ http://www.nhc.noaa.gov/HAW2/english/kids/movncane.swf
◦ http://www.usatoday.com/weather/graphics/hurricane/hurricane_explainer/flash.htm
◦ http://www.cbsnews.com/htdocs/natural_disasters/hurricanes/framesource_flash.html
◦ http://news.bbc.co.uk/1/hi/sci/tech/4588149.stm
◦ http://learners.gsfc.nasa.gov/mediaviewer/27storms/
Phase IV: Modification – 5 minutesAs a group, supplement, delete
or modify your Phase II product on a new page in the notebook
Record in the Phase II notebook and label as Phase IV
Phase V: Target Model ExampleGrade Level – intro undergradFormation
◦ Warm water - >80/81/82 to depth 100 m/200 m unstable air
Coriolis Force – 5 degrees N and S of Equator◦ spin
Weak Vertical Wind Shear◦ humid air aloft
Organizational Trigger ◦ airmass front, easterly wave, ITCZ convection
Phase V: Target Model Example Stages
◦ Tropical depression - numbered <38 mph (<33 kt)
◦ Tropical storm - named 39-73 mph (34-63 kt)
◦ Hurricane > 73 mph (64 kt)
Structure◦ Eye
Avg 300 miles wide, 20-40 miles, calm
◦ Eyewall Dense convection, highest winds
◦ Spiral bands dense bands of thunderstorms ranging from a few miles to
tens of miles wide and 50 to 300 miles long
Phase V: Target Model ExampleSeason: June 1-November 30Movement - hurricane's speed and path
depend on complex ocean and atmospheric interactions, complexity of the flow makes it very difficult to predict the speed and direction of a hurricane.◦ Trade winds, Westerlies, STH, Fronts
Conditions◦ Hurricane-force winds can extend outward to about
25 miles in a small hurricane and to more than 150 miles for a large one. Tropical storm-force winds can stretch out as far as 300 miles from the center of a large hurricane
◦ Worst impacts – right side
Phase V: Target Model ExampleCategorization – Saffir-Simpson
More…min, max, history…
Phase V: Target Model Example – 5 minutesAs group assess your Phase IV
product with Target Model on new page in notebook
Label page Phase V
Phase VI: Selection Criteria and Implementation Considerations – 10 minutes
Based on this experience, individually, develop global criteria for selecting visualizations for use during instructional
Record criteria in your notebook and label page Phase VI
Lastly, consider pedagogical implications for the use of visualizations in your classroom◦Record positive and negative implications
for use