3.30.08 - Ocean-atmosphere interactions

3.30.08 - Ocean-atmosphere interactions - o Atmospheric...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
NADW formation almost as important as Gulf Stream for warming NE European climate NADW forms at 15 million m 3 /sec. Where pycnocline is minimal or absent, small density changes can cause surface water to sink. Each layer of water has characteristic temperature and density. Temperature and density acquired at the surface. Ocean-Atmosphere Interactions Hurricane Rotating low-P system with associated thunderstorms and windspeeds > 120 km/hour Recipe for a hurricane Warm water for fuel: o Sea surface temperature above 26 °C o Warm surface water layer at least 60 m deep Surface wind convergence and spiraling:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: o Atmospheric low-pressure zone o Minimum distance from equator of + or – 5° • Room for storm to grow tall: o Absence of strong wind shear aloft Tropical cyclone formation regions: 30° North – 30° South Role of Coriolis Effect: Cyclonic circulation • Counter-clockwise in Northern hemisphere • Clockwise in Southern hemisphere Initiating a Hurricane • Wave or oscillation in airflow sends warm equatorial air into tropics. • Convergence and thermal effects warm, moist air rises, generating a cluster of small thunderstorms:...
View Full Document

  • Spring '08
  • Cox
  • Tropical cyclone, Gulf Stream, warm surface water, warm equatorial air, small density changes, Ocean-Atmosphere Interactions Hurricane

{[ snackBarMessage ]}

Ask a homework question - tutors are online