NO2 Ar Quality, 1990-2010 (Based on Annual Anthmetic Average) Los Angeles-Long B
ID: 161463 • Letter: N
Question
NO2 Ar Quality, 1990-2010 (Based on Annual Anthmetic Average) Los Angeles-Long Beach CA SITE-060372005 POC-1 NO2 Ar Quality, 1990-2010 (Based on Annual Arithmetic Average) Boston MANH SITE-250250002 Poc-1 Natura Sandurd Above are the annual average (990-2010) NO2 concentrations at sites in downtown Los Angeles and Boston. a) What are the sources of NO2 in the urban atmosphere? points) c) Compare and contrast the air quality in Boston and Los Angeles. If you were to claim that Boston has better air quality than Los Angeles, provides some evidence and explain why. (Hint: Do some research. Consider more than just the 2 graphs of NO2 above.) 4 points) Pages 4 of 8 16 of 1081Explanation / Answer
1. Most nitrogen is released from buring of fossil fuel like coal, oil and gas. It is also released by denitrification process.
2.the decreasing trend is because of technological change and environmental laws. Reduction from release of gas from a point source was stopped
3. Boston has better air quality. A survery has given 83.3 percent marks to boston for air quality as it has less amount of dangerous gases when comapred to other cities like los angeles.pollution index is 24.94 in boston whereas it is 69.32 in los angeles
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