Meteo 003 Lab 4 Chapter 4 14 ab

Meteo 003: Lab 4 Chapter 4: 14 ab, 15 c Chapter 5: 4 abc, 10 ab, 18 Chapter 6: 2 ab, 7 ab, 9 acd Chapter 7: 9 ab

4. 14 a, b pg. 163 Isohyets: isopleths of rainfall a) -same guidelines as all isopleths Hint: you’ll have to draw circles in places b) -prevailing winds are northeasterly -draw an arrow of the wind direction -air rises on windward side of a mountain

4. 15 c • pg. 164

Apparent Temperature Example • Find the apparent temperature for a day given that the air temperature was 80ᵒF and the dew point was 70ᵒF.

5. 4 a, b, c pg. 200 Type of Imagery Visible Infrared Water Vapor Color Darker Lighter Interpretation Clearer Cloudier Warmer Colder Drier Moister (for black and white or grayscale images) a, b) -Connect concepts to images -Refer to pages 180 -183 in the textbook -Water vapor imagery can only tell us about water vapor content in upper troposphere. Why? See pages 180 -183. c) -Which form of radiation has wavelength in the range of 0. 4 -0. 7 microns?

5. 10 a, b pg. 205 a) -Which imagery is used to determine albedo? -Consider your answer from 5. 4. c -High albedo = reflecting more, low albedo = absorbing more b) -Which imagery reveals information about temperature? -Refer to table in previous slide

5. 18 pg. 211 -Radar beams are sent out at an angle -For the snow showers to not be seen by the radar, what must be true?

6. 2 a, b pg. 243 Pressure Gradient Force: the force that directs air from higher toward lower pressure. *always points from high to low pressure *perpendicular to isobars (gets from high to low pressure fastest this way) -Think about when you’re pumping up a sports ball and air comes out a) -Wind blows away from higher pressure and toward lower pressure -Make sure to draw about a dozen arrows b) -Would the pressure gradient force be different in the Southern Hemisphere?

6. 7 a, b pg. 248 -Surface pressure at different locations need to be converted to sealevel pressure to be able to compare -Pressure decreases with height in the atmosphere a) -Use pressure decreases 10 mb for every 100 m of elevation Ex) What is the corrected to sea-level pressure of State College, PA if the surface pressure was measured to be 965 mb and the elevation is 350 m?

6. 7 cntd… b) -Pressure is lower at higher elevations -That’s why the air is thinner and harder to breathe in places like Denver, CO -How would a map of pressure look if left uncorrected to sea-level?

6. 9 a, c, d pg. 249 *NO part b a) -Identify Highs and Lows by finding relative maxima of closed isobars c) -Wind barbs show the direction the wind is coming from -Consider how wind flows around High and Low pressure systems d) -In general, the tighter the isobars, the faster the wind speed -This is due to a stronger pressure gradient force

7. 9 a, b pg. 300 -A warmer column of air will have higher heights on a given pressure surface when compared to a colder column of air a) -Determine which location is warmest, which is coldest? -How would the temperature of each location affect the height of any given pressure level? b) -Use the same concepts from part a but instead of different locations think of different seasons

Chapter 4: 14 ab, 15 c Chapter 5: 4 abc, 10 ab, 18 Chapter 6: 2 ab, 7 ab, 9 acd Chapter 7: 9 ab Astrid (ais 5396@psu. edu): 10 -11 AM in 623 Walker Josh (jig 5374@psu. edu): 2 -3 PM in 6 th Floor Walker Wx Center Zach (zmg 5025@psu. edu): 4 -5 PM in 6 th Floor Walker Wx Center Review Sessions will be held Tuesday Look out for more information about the time and location