Tephigram exercise 1 First we plot the temperature

Tephigram exercise 1 First we plot the temperature

Tephigram exercise 1 First we plot the temperature

Tephigram exercise 1 The red dots are the humidity

Tephigram exercise 1 Depth of the PBL?

Tephigram exercise 1 Depth of the PBL Approx 100 h. Pa

Tephigram exercise 1 Q: RH at 1000 h. Pa?

Tephigram exercise 1 RH=rv/rs = 5 / 7. 7 = 65%

Depth of the PBL=100 h. Pa. RH@1000 h. Pa=65% @900 h. Pa=85% Is the PBL well mixed? Potential temperature at 800 h. Pa? (two ways)

Potential temperature at 800 h. Pa? 291 K – Two ways to read…

700? Potential temperature at 800 h. Pa? 291 K – Two ways to read…

What is the condensation temperature and pressure of parcel at 1000 h. Pa? 910 h. Pa and 2. 5 o. C Tephigram exercise 2

What is dew point temperature of parcel at 1000 h. Pa? Approximately 4 o. C

Rainfall evaporated into parcel at 1000 h. Pa? Becomes saturated at 7 o. C, called the “wet-bulb temperature” Mixing ratio at this point is 6. 3 g kg-1

What is the equivalent potential temperature of parcel at 1000 h. Pa? 22. 5 o. C – this is the same as the equivalent temperature.

What is the equivalent potential temperature of parcel at 900 h. Pa? 900 h. Pa = 23 o. C, 700 h. Pa off the page, different tephigram bounds required It is increasing with height.

What are the LCL and LFC for parcel at 1000 h. Pa? Tephigram exercise 3 LCL is 910 h. Pa (same as condensation pressure). LFC undefined. Trigger temperature 17 o. C, convection unlikely, as requires strong heating.

What is dew point temperature of parcel at 1000 h. Pa? Approximately 4 o. C

C D F E B A

Tephigram V: Convective Instability

Convective Instability

Tephigram V: Convective Instability

Tephigram V: Convective Instability

Tephigram V: Convective Instability 1. Stable 2. -8 C and -14 C

Gate sounding