Midterm 2

Test on Friday, Feb. 25th

Multiple choice just like the last exam

Study chapters 3-8 (up to p 227 in Ch 8)

Bring a pink PARSCORE Scantron sheet

Make up midterm tomorrow cancelled. New test time TBD.

Evening review session tonight from 8:00 – 9:30 in

Engineering I Room 1104

Wildlands Program

Today, we will...

• Review air masses

• Review atmospheric lifting mechanisms

• Understand upper atmosphere dynamics of the jet stream and Rossby waves

• Learn about the formation of mid-latitude cyclones

recall the Aleutian and Icelandic low pressure systems

Key low pressure systems

Aleutian Low Icelandic Low

Maritime Tropical (mT) Air Mass Influence on Southeast Precipitation

unstable air on the west side of

anticyclones combined with warm water of the

Gulf stream

Location of Deserts

Atmospheric Lifting Occurs at a Range of Scales

Convergent Liftingthink of the ITCZ - air converges from all points to low pressure zones and the displaced air is

lofted

Convectional Liftingunequal surface heating produces hotspots

where ‘bubbles’ of air will rise - this is convection

Orographic Lifting

air cools as it ascends dry air warms

as it descends

the moisture in the cloud gets wrung out

by condensation

Hawaii

Cherrapunji, India

Average annual precipitation: 11430 mm (37.5 ft)

Record annual precipitation: 26470 mm (86.8 ft)