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Lecture on the Cyclone. The cyclone. Cyclones: Putting it all together. There are two types of cyclones, tropical/warm core and extratropical/cold core. Extratropical cyclones are characterized by having differing air masses frontal movements where tropical cyclones do not.
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Lecture on the Cyclone www.assignmentpoint.com
The cyclone www.assignmentpoint.com
Cyclones: Putting it all together • There are two types of cyclones, tropical/warm core and extratropical/cold core. • Extratropical cyclones are characterized by having differing air masses frontal movements where tropical cyclones do not. • We will concern ourselves with extratropical cyclones in this presentation. www.assignmentpoint.com
Cyclones: Putting it all together • Typically, cyclones are represented by using the Norwegian Cyclone model. It is simplistic, but a good way to start when understanding surface lows and cyclones. • Students must begin to understand the four dimensional view of a cyclone • North-South • East-West • Up-Down • Time www.assignmentpoint.com
Cyclones: Norwegian Model • Step 1: A subtle boundary exists Surface View 3-D View www.assignmentpoint.com Images source: http://www.srh.noaa.gov/jetstream//synoptic/cyclone.htm
Cyclones: Norwegian Model • Step 2: A wave forms on the boundary Surface View 3-D View www.assignmentpoint.com Images source: http://www.srh.noaa.gov/jetstream//synoptic/cyclone.htm
Cyclones: Norwegian Model • Step 3: Cyclone becomes mature Surface View 3-D View www.assignmentpoint.com Images source: http://www.srh.noaa.gov/jetstream//synoptic/cyclone.htm
Cyclones: Norwegian Model • Step 4: The occlusion process Surface View 3-D View www.assignmentpoint.com Images source: http://www.srh.noaa.gov/jetstream//synoptic/cyclone.htm
Cyclones: Norwegian Model • Step 5: Cold air dominates, near the end. Surface View 3-D View www.assignmentpoint.com Images source: http://www.srh.noaa.gov/jetstream//synoptic/cyclone.htm
Cyclone: On satellite www.assignmentpoint.com
Cyclone www.assignmentpoint.com
Cyclone • Radar & Satellite view of a cyclone Occlusion Occlusion Warm Front Warm Front Cold Front Cold Front www.assignmentpoint.com
A cyclone centered just south of Wichita, KS. Fronts well developed www.assignmentpoint.com
The cyclone six hours later, near Kansas City. A mature cyclone at this point with well developed fronts. Do you see them? www.assignmentpoint.com
Another six hours, the cyclone (low) is beginning to occlude. The surface low is being surrounded by the colder air. www.assignmentpoint.com
Another six hours, the cyclone (low) is now fully occluded. The surface low is completely within the colder air mass. www.assignmentpoint.com
Another six hours, the cold front has surged well east while the center of the cyclone has remained over the Midwest. www.assignmentpoint.com
Animation of a cyclone www.assignmentpoint.com