Figure 1.20 Thermal structure of the atmosphere 100 Earth's atmosphere is traditionally divided into four layers, based on temperature. 200 90 140 130 80 Aurora 120 300 THERMOSPHERE 70 110 100 400 60 90 500 80 Mesopause 50 Meteor Temperature 70 600 MESOSPHERE 700 50 Stratópause 30 800 40 900 20 30 STRATOS PHERE Maximum ozone 1000 20 -80 -70 -60 -50 -40 -30 -20 -10 10 20 30 40 10 Temperature (°C) Tropopause 10 Mt. Everest TROPOSPHERE -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 20 30 40 50°C -140 -120 -100 -80 -60 -40 20 40 32 60 80 100 120°F -20 Temperature Pressure levels (millibais) Height (km) Height (miles)
The accompanying diagram shows a simplified temperature profile of a
portion of the atmosphere. (Temperature profiles are usually obtained
twice each day from radiosondes at numerous locations around the
world.) Use this diagram to answer the following questions.
1. What is the temperature (solid red line) at the surface (pressure =
1000 millibars)?
2. What is the temperature at the 600-mb pressure level?
3. What is the temperature at the 250-mb pressure level?
4. Circle each of the inversions on the temperature profile. Recall
that a temperature inversion is a region where temperature
increases with height.
5. Does this graph look like the average temperature profile shown
in Figure 1.20 in your textbook? How is it different?
6. What layer of Earth’s atmospheric is shown on this graph?
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