Given both profiles (A and B), w hich profile is likely to have come from the su
ID: 290586 • Letter: G
Question
Given both profiles (A and B), which profile is likely to have come from the subtropics? Why? (5 marks)
Profile A Dewpoint Pressure Temperature (Ta) Temperature (Td) 7.0 6.0 8.0 6.0 5.0 2.0 10.0 20.0 21.0 22.0 -24.0 25.0 29.0 33.0 40.0 46.0 25.0 20.0 22.0 19.0 14.0 11.5 9.0 6.0 1000 970 930 900 850 800 750 700 650 600 550 500 450 400 350 300 0.5 5.0 9.5 15.0 22.0 30.0 39.0 Profile B Dewpoint Pressure Temperature (Ta) Temperature (Td) 1000 26.5 29.0 25.5 23.0 20.0 15.5 13.0 9.0 7.5 3.5 1.0 23.0 17.0 17.5 19.0 17.0 14.0 13.0 7.5 6.0 3.5 970 930 900 850 800 750 650 600 550 500 450 400 350 300 -13.0 20.0 30.0 -34.5 -41.0 -15.0 -22.5 30.0Explanation / Answer
Profile B is likely to have come from the subtropics. Dew point is the indicator of humidity. Greater dew point at a place with constant pressure and temperature means greater humidity at that place. The tropical region has higher humidity because insolation is higher and vast water bodies resulting in huge amount of evaporation.