1. Meteo 003 Lab 3 Due Friday September 18 3.12ab, 3.13abcde, 3.15ab, 3.16ab 4.1ab, 4.2, 4.6, 4.7b, 4.8

2. 3.12ab a) Gulf Stream – Originates in the Gulf of Mexico, travels around the tip of Florida and continues along the eastern coastline. – Current of relatively warm ocean water. b) Map interpretation – Use the color coding on the map to interpret temperatures.

3. 3.13abcde All about Seasonality – Large bodies of water moderate temperature Coastlines and islands vs. landlocked areas – Prevailing wind direction West coast vs. east coast – Location of Gulf Stream (Part e)

4. 3.15ab a) – To compute the diurnal range, average the difference between maximum and minimum temperatures over the 10 years of data. b) – How would clouds affect max and min temperatures?

5. 3.16a 70 80 70

6. 3.16b Albedo- Amount of solar energy reflected back into Space – Dark objects have low albedos (absorb more than reflect) Asphalt, soil – Light objects have high albedos (reflect more than absorb) Ice, snow

7. 4.1a Relative Humidity – How much water vapor is present compared to how much before the air becomes saturated? – Warm air can contain more water vapor than cold air. Given Dew Point is constant What does this mean in terms of water vapor present throughout the night?

8. 4.1b Dew Point Depression = Temperature – Dew Point Things to consider – Time of day dew point depression is greatest/least – What happens when dew point depression = 0?

9. 4.2 Fog can be considered a low lying cloud. Fog forms where air is saturated. – What does the dew point depression equal when air is saturated?

10. 4.6 Relative Humidity = Vapor Pressure/ Equilibrium Vapor Pressure * 100% Given 2 out of 3 variables in equation, you will solve for missing variable Ex). RH = 75% Vapor Pressure = 9mb Eq. Vapor Pressure = ?

11. 4.7b Pacific Ocean Vs. Gulf of Mexico – Which is generally warmer/colder? – Higher temperatures increase evaporation rate, lead to more water vapor in the atmosphere

12. 4.8 Density = mass/volume Given two parcels of air with equal volumes. Calculate molecular mass to determine density of air. Ex). Oxygen = 16AMU, Hydrogen = 1AMU – What is the molecular mass of H 2 O? 2 Hydrogen + 1 Oxygen = 2 x 1AMU + 16AMU = 18AMU – What is the molecular mass of O 2 ? N 2 ?

13. 3.12ab, 3.13abcde, 3.15ab, 3.16ab 4.1ab, 4.2, 4.6, 4.7b, 4.8 Thursday Office Hours: Astrid (ais5396@psu.edu): 10-11 AM in 623 Walker Josh (jig5374@psu.edu): 2-3 PM in 6 th Floor Walker Wx Center Zach (zmg5025@psu.edu): 4-5 PM in 6 th Floor Walker Wx Center