Atmospheric and Oceanic Sciences 104 Winter 2018 Homework Assignment #5 Due Thursday, March 1, 2018 Using Table 7.3 in the textbook (do not use the modernized standards found on the Internet), determine the AQI descriptor (Good, Moderate, etc.) that should be reported for air quality on the following days 1. Day 3 0.12 8 Day 2 Day 1 0.15 12 130 180 0.12 0.4 Pollutant 0.22 O3, 1-hr (ppm) CO, 8-hr (ppm) PM2.5, 24-hr (ug/m) PM10, 24-hr (ug/m3) SO2. 24-hr (ppm) NO2, 1-hr (ppm) 150 300 0.2 0.7 100 0.05 0.1 2. Can the emissions of CO, NO, and hydrocarbons simultaneously be minimized in automobile exhaust by adjusting the engine's air-to-fuel ratio? Explain. In class and in the instructional videos, we saw a series of maps depicting numbers of violations of clean air standards for carbon monoxide, ozone, and particulate matter in the South Coast Air Basin (SCAB). Explain how the local weather and emission patterns (time and space) is partially responsible for these results 3. Find the settling velocity of an 8 μm diameter particle with density 1500 kg/m3. If this particle had been hurled to a height of 7000 m during a volcanic eruption, estimate the time required to reach the ground (at sea level). You may assume that the viscosity of air does not change enough with altitude to be important. If winds average 8.0 m/s, how far away (horizontally) would it travel on its way down? 4.