Lapse Rates The objective of this exercise is to calculate lapse rates. Recall,
ID: 120201 • Letter: L
Question
Lapse Rates The objective of this exercise is to calculate lapse rates. Recall, a lapse rate is a change in temperature over a change in height. Your lapse rates should have units of °C/1000m (decrease in temperature with height is positive; inversions have negative lapse rates). 1. A column of air that has a temperature of 13°C at 2000m and a temperature of 3°C at 3000m has a lapse rate of 10°C/1000m. Show how this is the case. 2. A column of air that has a temperature of 13°C at 3000m and a temperature of 3°C at 2000m has a lapse rate of -10°C/1000m. Show how this is the case. 3. What is the lapse rate (in units of °C/1000m) for a column of air that has a temperature of 17°C at 1000m and a temperature of 23°C at 0m? 4. What is the lapse rate (in units of °C/1000m) for a column of air that has a temperature of 17°C at 1000m and a temperature of 23°C at 2000m? Now that you have practiced 1000m differences in height, try for larger increments. Continue to express your final answer in units of °C/1000m. 5. A column of air that has a temperature of 33°C at 0m and a temperature of 19°C at 2000m has a lapse rate of 7°C/1000m. Show how this is the case. 6. What is the lapse rate (in units of °C/1000m) for a column of air that has a temperature of 33°C at 1000m and a temperature of 19°C at 5000m? Use the graph below to answer questions 6 through 9. As for the first page, express each in units of °C/1000m. 7. Calculate the lapse rate for line A units of °C/1000m. 8. Calculate the lapse rate for line B units of °C/1000m. 9. Calculate the lapse rate for line C units of °C/1000m. 10. Calculate the lapse rate for line D units of °C/1000m.
Explanation / Answer
1)1. A column of air that has a temperature of 13°C at 2000m and a temperature of 3°C at 3000m has a lapse rate of 10°C/1000m. Show how this is the case
Answer: Lapse rate = Change in temperature/ Change in altitude =(13-3) °C/ (3000-2000) m
= 10°C/1000m
2) A column of air that has a temperature of 13°C at 3000m and a temperature of 3°C at 2000m has a lapse rate of -10°C/1000m. Show how this is the case.
Answer: Lapse rate = Change in temperature/ Change in altitude = (3-13)°C/(3000-2000) m
= -10°C/1000m
3) What is the lapse rate (in units of °C/1000m) for a column of air that has a temperature of 17°C at 1000m and a temperature of 23°C at 0m?
Answer: Lapse rate = Change in temperature/ Change in altitude = (23-17)°C /(1000-0) m
=6 °C/1000 m
4) What is the lapse rate (in units of °C/1000m) for a column of air that has a temperature of 17°C at 1000m and a temperature of 23°C at 2000m?
Answer: Lapse rate = Change in temperature/ Change in altitude = (17-23)°C /(2000-1000) m
= - 6 °C/1000 m
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.