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Use the accompanying figure to answer the following question. Radiative forcing

ID: 111354 • Letter: U

Question

Use the accompanying figure to answer the following question. Radiative forcing factors that are shown below the zero line have a cooling effect on the climate, whereas forcing factors that are shown above the zero line have a warming effect. Aerosols (soot, dust, sulfates, sea spray) cause more climate warming than does stratospheric ozone. A molecule of CO2 causes more warming than a molecule of any other greenhouse gas. Aerosols (soot, dust, sulfates, sea spray) have a net cooling effect that partially counteracts the warming effects of greenhouse gases.

Explanation / Answer

1. Answer is option 3, Aerosols have a net cooling effect that partially counteracts the warming effects of greenhouse gases.

According to the infogram, total warming effect of greenhouse gases is about 3 watts/sguare km. This warming effect is partially counteracted by the cooling effect of aerosols by about 0.5 watts/sguare km .This clearly states that aerosols have a net cooling effect that partially counteracts the warming effects of greenhouse gases.

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