10. Textbook question 5.12: Visibility is affected primarily by particles with a

Question

10. Textbook question 5.12: Visibility is affected primarily by particles with a diameter close to the wavelength of visible light, 0.5 m, which particle mode does this correspond to, and which three particle (chemical) components in this mode do you believe affect visibility in the background ("clean") troposphere the most? 11. By which mechanisms do atmospheric particles grow? Distinguish between particle sizes 12. Textbook question 5.14: Calculate the additional number of U.S. deaths per year due to long-term PM2.5 exposure if the entire population of 300 million were exposed to 12 instead of 10 m"(use equation 5.13 textbook;

Explanation / Answer

10)

The different types of modes are

So the paricles in the accumulation mode which have a diameter close to the wavelength of visible light(0.5 um) primarily affect the visibility .

The three chemical components present in the accumulation mode are Sulfates,Nitrates and Ammonium.

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