1. METEO 003 Section 3 Tips for Problem Sets: Get started early, use the Wednesday class to work on the lab assignment and ask questions! The mini-lecture on Wednesdays is based on that week’s assignment. Make sure you come to class. Use the office hours to ask for help! The chapters assigned in the book are also a good reference so make sure to read what was assigned. Work on the assignment with other people in the class. Just make sure that what you turn in is your own work! Make sure to attempt all the problems! I cannot give partial credit for questions left blank. Matthew Brothersemail: mdb5420@psu.edu Office hours: Thursday 3:45pm – 4:45pm or by appointment Location: 606B Walker

2. Assignment 1: Due Sept 5 Chapter 1 Problem 1a and b – consult google if you are not sure Problem 4 – pages 8 and 10 in the text are helpful

3. How to Isopleth Isopleth – line of equal value Uses of isoplething: – See patterns in data – Estimate values where no data is observed

5. How to Isopleth Isopleth – line of equal value Uses of isoplething: – See patterns in data – Estimate values where no data is observed Common isopleths in meteorology: – Isobar: line of equal pressure – Isotherm: line of equal temperature – Isodrosotherm: line of equal dew point

6. How to Isopleth 1.Pick a value to isopleth first 2.Find a location on the map where this value is observed 3.Draw a line so locations on one side of your line have greater value and locations on the other side of the line have a lesser value 4.Stop drawing once you reach an edge of the data or the line closes on itself (circle) 5.Label the isopleth *Analysis should be neat & smooth, not jagged & messy *Isopleth only the area on the map where data is available

7. Example

8. Assignment 1: Due Sept 5 Chapter 1 Problem 1a and b – consult google is you are not sure Problem 4 – pages 8 and 10 in the text are helpful Problem 7a,b,c – tips 1/ Find the multiple of 10, example 30⁰F 2/ Look at the numbers around it, and decide which way to proceed 3/You want to draw your 30⁰ line so that it is closer to 28⁰ than to 34⁰

9. Gradients Gradient of B = Change in Value of B Distance Isopleths close together = large gradient In general, large gradients in weather variables point toward interesting meteorological activity

10. Assignment 1: Due Sept 5

11. Wind Direction EAST WIND = Winds are coming from the EAST and moving WEST Easterly Wind = From the East Eastward Wind = From the West

12. Assignment 1: Due Sept 5