EARTHSC 2GG3 Chapter Notes - Chapter 7: Jet Stream, Northern Hemisphere, Coastal Erosion
1 Oct 2016
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Hurricane: tropical cyclone, storm system of low pressure surround by strong winds, torrential rain, tornadoes, high surge of sea water. Southeast asia = typhoons, indian ocean = cyclones. Begins over warm sea water, air drawn in, rises at eye and spreads out. Cold dry air sinks in the eye, air and condensation builds up into a chimney of storms. Convection strengthens when air is at high elevation, warm air rises, releases latent heat. Eye: center of storm, low pressure zone. Highest winds along the edge of the eyewall. Rainbands: clouds that spiral inward around center of storm. Increase in intensity towards the center of the hurricane. Saffir-simpson hurricane wind scale: based on barometric pressure and average wind speed. Low category storms can do as much damage as higher category ones. Along atlantic coast of us/canada: hurricanes in aug-oct (80-90 tropical storms and 45 hurricanes (6 are named) yearly). Curve northward as they approach us due to coriolis.
