Let’s challenge one of the 63th National Examination for Certified Weather Forecasters

Hi,everyone! I’m weather forecaster yoshi.

Do you want to become the weather forcaster in Japan?

Today, Let’s challenge one of the National Examination for Certified Weather Forecasters.

This is question 3 of the general knowledge section of the 63th weather forecaster examination.

Can you solve this problem?

Q3　Temperature of the air mass

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Question3

As shown in the diagram, consider a mountain at an altitude of 1500m located in a plain at an altitude of 0m. The atmospheric temperature decrease rate is 6°C/km everywhere, and the temperature at 0m altitude is 30°C. At this time, a small air mass at an altitude of 1200m on the left side of the mountain is adiabatically descended to the base at 0m altitude on the right side without mixing with the surrounding air.

Choose the one option from ① to ⑤ that is closest to the temperature of the air mass after its descent. It is assumed that water vapor condensation does not occur during the movement of the air mass.

How to solve the problem

First, at an altitude of 1200m, the temperature of the air mass is 22.8°C using a lapse rate of 6°C/km. After that, we will use a lapse rate of 10°C/km, so the temperature at the base will be 22.8°C + 12°C = 34.8°C.

Answer is ④

Conclusion

This time ,We challenged question 3 of the general knowledge section of the 63th weather forecaster examination.

Such questions are frequently asked in the forecaster examination.

Let’s make sure we can solve them.

Thank you for reading my blog.See you next time.

Introduction of National Examination for Certified Weather Forecasters in Japan

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