Geog. 110 Notes 6

Geog. 110 Notes 6 - -mid latitude cyclonic systems:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
- mid latitude cyclonic systems : -background: -air pressure-collective force associated with impact of air molecules (pressure=force/area; measured by barometer; an increase in the temperature of a gas will result in an increase in pressure; faster molecular movement leads to an increased force of air); warming also leads to an upward expansion of air columns (air in the tropics shows higher expansion and upward rising than air in polar regions); at bottom of air column air pressure drops, but higher up in the column air pressure rises; negative relationship b/w warming and pressure at bottom, but positive relationship at top of column -examples: the Thermal Low (in deserts where elevation is low and temperatures are very high, air pressure is usually low; however at higher elevations air pressure increases with cooling; why is it so hot in southwestern US? very little water, so all of radiation turns into sensible heat); the Arctic High (above Canada, net radiation is negative, so temperatures are very cold, and thus air pressure is higher) -examples of positive relationship b/w temperature and pressure aloft: heights to the 500 millibar level (the higher the 500 mb height, the warmer the air in an area)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/13/2011 for the course GEOG 110 taught by Professor Konrad during the Spring '08 term at UNC.

Page1 / 2

Geog. 110 Notes 6 - -mid latitude cyclonic systems:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online