P3

How does the Electrical Vehicle industry affect air quality in Oregon?

1. Description of data

Figure 1 we created is using google Charts and GeoChart functionality, we want to use the map to present the word: “where”. We map the graph with PM 2.5 values in different countries in Oregon. We found that the counties with the most PM 2.5 is LANE county. It makes sense since the county is close to the sea and has many heavy industries, the population is about the top 4 in Oregon counties. Figure 2 shows the relationship between household income, county population, and PM2.5. We decided to use two mixed bar charts because we want to be more detailed in each county, so it will be more straightforward to see what is going on here. In order to keep the result consistent and convincing, we are picking those data from 2014. Figures 3 and 4 are network relationships between counties. The node color stands for the ozone density, which means the red color is ozone has a higher density, and the white shows ozone is less dense. The edge color stands for the PM2.5 value and the size of the nodes in the population. We label the uncertainty of counties we care about (which has higher EV registration) in the network. The population might be higher since there are unsigned people. We focus on county 51(MULTNOMAH) and its connection because the city is very representative, such as high population, high household income, and high electrical vehicle registration number. Furthermore, all the figures and network maps we generated would be useless and unrelated to our topic “ZEVs affect air quality” if we do not explicitly indicate the growth of the “Zero-Emission Vehicles” (ZEV) in Oregon. In Figure 5, we produced a bar chart indicating the relationship between the number of Electric Vehicle (EV) growth and gasoline consumption in Oregon from 2010 to 2020. Obviously, the amount of EVs is increasing every year and has hit the 30 thousand milestones. On the other hand, gasoline consumption appears to be fluctuating and then starts to decrease in 2019. In addition, as we investigated our topic deeper and deeper, we discovered a fun phenomenon that the growth of EVs and fluctuated gasoline consumption have been indirectly affected by the unveiling of the new Tesla model. Tesla, which is a leading electric vehicle and energy company based in the United States, introduced one of the most successful EVs: the Tesla Model 3. In the same year, the amount of EVs increased by 15% in Oregon. After 3 years, the Tesla Model Y was unveiled in March 2019. And then, we can obviously see that there is a large increase EV in Oregon and a noticeable decrease in gasoline consumption in Oregon in the year 2019. In addition to the trend of EV growth and gasoline consumption in Oregon, we further investigated air quality change that may be affected by the growth of EVs because the U.S. environmental protection Agency directly identifies that all-electric vehicles are considered zero-emission vehicles. In figure 6, we collected and plotted the PM 2.5 data index report from 2014 to 2021. We can see that the average value of PM 2.5 in Oregon has been decreasing and has a large drop in 2019. However, there is a breakout that is far away from the standard level because the Oregon wildfire was frequently reported in 2020.

Figure 1: PM2.5 amount in different counties in Oregon.

Figure 2.

Figure 3: The network of the counties with the most population.

Figure 4: Four counties with the most population and the relationship between ozone and pm2.5

Figure 5.

Figure 6.

2. We are mainly using Google Charts to visualize our graph. The used charts are: “Combo charts, GeoCharts, and Line charts”

3. Multi-view visualization system

4. Principles for Multi-view visualization