Weather & Climate
Recycling Survey (please take)
Hot air risesAir expands and cools at lower pressuresAir can hold less water at higher altitudes
Result of earth spinning
In Northern Hemisphere, Coriolis Force deflects moving objects to the RIGHT
Force is proportional to velocity
Force is a function of latitude (zero at equator)
Zoom Poll: Coriolis Force
A) Deflects moving objects to the Left in the Southern Hemisphere
B) is proportional to velocity
C) Is a function of latitude with smallest force at the Poles
D) Exists on Venus
E) Allows hurricanes to be stable, rotating systems
How does Climate differ from Weather?
How do you prepare for different weather each day?
How do you prepare for different climates?
Climate vs. Weather
Weather is the day-to-day state of the atmosphere, and its short-term variation in minutes to weeks. "How hot is it right now?" and "Will we get a snowstorm this week?"
Climate is the weather of a place averaged over a period of time, often 30 years. Climate information tells us about the normal weather, as well as the range of weather extremes for a location.
More Weather Basics
Land heats faster than water
Wind flows from High pressure to Low Pressure
Wind circulates counterclockwise in Northern Hemisphere
Due to spinning Earth
Where does the energy come from?
What are the boundaries?
Pretty good for 72 hours (3 days)
OK for 10 days
Too much uncertainty over 10 days
Based on models
Videos can show trends
Temperature, pressure, wind, precipitation
Support for Learning
Midterm II-PostedTuesday, Nov 1
Participation-30% (Zoom Polling 15%; Weekly Assignments 15%)
Extra Credit Paper (up to 2/3 of letter grade)
Subject of your choice
5-10 references (at least 3 not on the internet)
Discuss with TAs or Bob (email OK)
Videos (Live & Taped)