Refer to Infographic 22.5. Sulfate aerosols are produced mostly from sulfur diox
ID: 96144 • Letter: R
Question
Refer to Infographic 22.5. Sulfate aerosols are produced mostly from sulfur dioxide which arises from fossil fuel combustion. Because of their impact on air quality, including its role in acid deposition, efforts to reduce emissions, for example by using scrubbers at coal fired power plants, have succeeded in lowering emissions. Use the Infographic to determine what effect these reductions in emissions would have on climate. Select one: a. Sulfate aerosols are negative forcers and thus have a cooling effect. b. They can scatter incoming light and increase cloud formation and reflectivity. c. A reduction in emissions would thus have a warming effect on global climate. d. Sulfate aerosols are also positive forcers and thus have a warning effect. e. Only A, B, and C are correct.Explanation / Answer
Answer is e. a, b, and c are correct. sulfate aerosols are help to cool climate means negative forces and have cooling effect. Aerosols have direct effect by increasing scattering and absorption of incoming soler radiation and indirect effect is cloud formation have ability to serve as cloud condensation nuclei. This cloud condensation nuclei increase reflectivity by making cloud densar and giving them heigher liquid content. These aerosol cut out the effect of all positive forces together means reduce the warning effect from all non CO2 greenhouse gases together. Thus, reduction in emission of sulferdioxide reduce sulfer aerosol formation and create a warning effect on global climate. Reduction in emission cause reduction in negative forcing that would increase global temperature, thus option e is correct.