Meteo 003 Lab 7 Due Friday, October 20th 9.3abc, 9.12, 9.15abc, 9.16 10.1ab, 10.2ab, 10.3

Chapter 9, #3abc A) Average occurrence of thunderstorms Ex) January = 0.4 days, so, a thunderstorm will occur once every _____ years B) Do more thunderstorms occur during the warmer or colder months in San Francisco? The answer from Part A will help with this C) Think about ways to destabilize the troposphere: Heat below or cool above Look at climatology map to determine which situation occurred A) 1/0.4 = 2.5

Chapter 9 #12 Terminal Velocity = 1750 * √(Diameter) Use [cm] for the diameter units in your initial calculation Units of calculated terminal velocity are [cm/s] Convert to mph 6.2137*10-6 miles = 1 cm 3600 seconds in an hour

Chapter 9 #15abc A) Lake breeze front will be at the boundary of clear skies and clouds Winds will blow perpendicular to front B) Draw arrows at each square showing wind direction AND write the wind direction of EACH location (see next slide) C) Time of year image was taken How do water temperatures compare to the surrounding land in summer, winter? Are cumulus clouds more likely to form over a relatively cool surface or relatively warm surface?

NNE NE ???

Chapter 9 #16 Match locations to descriptions Visible satellite image, white patches correspond to clouds Note location of the Appalachian Mountains Image was taken in July, lakes relatively cool compared to land

Chapter 10 #1ab ITCZ (Intertropical Convergence Zone): Elongated area that separates the trade winds in the Northern Hemisphere from their counterparts in the southern hemisphere The ITCZ tends to follow the sun’s direct rays Land heats more intensely than water, less land means more even distribution of heating.

Chapter 10 #2ab A) Isohyets are isopleths of precipitation Draw 50, 100 and 150 inch isohyets B) Use the contour map to help explain precipitation pattern Prevailing low level winds are from what direction? Precipitation pattern of the windward vs leeward side of a mountain

Chapter 10 #3 El Niño: Anomalously warm (warmer than normal) waters in the equatorial central and eastern Pacific La Niña: Anomalously cold waters in the equatorial central and eastern Pacific Neutral (“La Nada”): Somewhere in between, neutral or average Pacific temperatures

Lab 7: Due Friday, October 20th Office hours: Thursday 2-3 in Walker 606B Email me if you have any questions! Chapter 9: 3abc, 12, 15abc, 16 Chapter 10: 1ab, 2ab, 3