23. Prior to the industrial revolution in the 1800s, the average concentration o

Question

23. Prior to the industrial revolution in the 1800s, the average concentration of CO2 was about 280 ppmv. By approximately what percent have CO2 concentrations increased from their pre-industrial value? a. 40% b. 35% C. 2596 d. 20% e. 15% 010 b' The figure above shows a calm day with clouds (a), a calm day without clouds (a'), a calm night with clouds (b), and a calm night without clouds (b'). Questions 24 through 27 are based on the figure 24. If the surface above a and a' are covered with grass (and all other factors are the same), on which surface is temperature most likely to be higher a. a b. a c. temperature would be the same on both surfaces d. none of the above 25. Would the albedo of the earth-atmosphere system most likely be greater in a or a" a. Greater in a b. Greater in a c. The albedo values would be the same for both surfaces d. None of the above 26. Would the surface air temperature most likely be higher in b or b a. higher in b b. higher in b' c. about the same d. none of the above

Explanation / Answer

23. Global annual mean CO2 concentration has increased by more than 45% since the start of the Industrial Revolution. So the answer is a (40%).

24. The surface temperature is likely to be higher in a' , where the absence of clouds allow the heat to enter the earth. The answer is option a'.

25.Albedo is the measure of solar energy reflected back from the earth bak into the space. Due to the presence of clouds in a, the albedo is lower compared to a'. The answer is option a'.

26. The surface air temperature is most likely to be higher in b, where the clouds dont allow the radiated heat to go bsck to the space.

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