Global dimming - Los Angeles 0.0 / 5 ? GeographyCase studiesA2/A-levelOCR Created by: berraCreated on: 12-04-16 21:46 Global Dimming - Los Angeles ... 1 of 15 How many vehicles? 11 million 2 of 15 Why did ports cause a problem? High conc. of diesel fumes 3 of 15 What was a result of the photochemical smog? Nitrous oxide reacting with hydrocarbons under intense sunlight 4 of 15 What do temperature inversions do? Trap the fumes and prevent them from leaving the atmosphere 5 of 15 Why did the climate make things worse? Only 35 days a year are wet 6 of 15 Where was a LA in the list of most polluted US cities? 2nd in 2008 7 of 15 How many related premature deaths? 1,600 8 of 15 What reduction did children have in lung capacity? 10-15% 9 of 15 What happened to the film industry? Many went elsewhere 10 of 15 What regulations were made? Regular smog checks and and fines if vehicle fumes didn't meet standards 11 of 15 What was set up in 1967? California Air Resources Board (CARB) - set air quality standards in 1969 12 of 15 What does CARB aim to do? Reduce petrol use by 20% in the next 10 years 13 of 15 What was put in place to reduce air pollution? The Clean Air Act of 1963 14 of 15 What was done in 1966? Exhaust controls on cars 15 of 15
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