Activity 2: Tropical Cyclone Recipe

Objective: You should be able to identify the different contributing factors
for the development of a tropical cyclone.
Procedures:
1. Look for someone at home and conduct a survey about what he or she
thinks a typhoon sustains a tropical cyclone. Check the yes column if he or
she agrees that the given factor is needed to sustain a tropical cyclone and
the NO column if he or she does not believe that it is necessary to sustain or
allow the development of a tropical cyclone.

2. You can explain that he or she can base his or her answer on prior
knowledge or experience.

3. Begin.

Tropical Cyclone Must
Haves/Must not have

1. The developing system
must be at least 500 km
away from the equator.

2. The middle atmosphere
must be relatively humid at
the height of about 5000
meters.

3. The wind speed must
change slowly with the height
through the troposphere.

4. The ocean should be at
freezing temperature.

5.The temperature of the
surface layer of the ocean
must be 26.5 degrees
Celsius or warmer

6. There should minimal
water source.

7. The warm layer must be
at least 50 meters.

8. There should be less
water vapor in the air.

9. There is a preexisting
atmospheric circulation
located closer to the near
surface warm layer.

10. There should be no
convection at all.

Yes or No​