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(5) [total: 15%) The average scale height of the atmosphere (H) is ~7 km. a) [590] What does the average scale height tell us about the mean temperature of the atmosphere? In other words, what is the mean temperature when H- 7 km? b) [596] In actuality, the atmosphere varies in temperature. For instance, at Manaus, in the middle of the Brazilian Amazon near the equator, a typical mean atmospheric temperature is 4°C. At Churchill, in northern Manitoba (Canada), it can be -40°C. What are the corresponding scale heights in the atmosphere at these two locations? c) [5%] Until what altitudes does pressure decay to ½ of its value at sea level over Manaus and Churchill, respectively?

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