Download presentation

Presentation is loading. Please wait.

Published byClaude Sullivan Modified about 1 year ago

1
Tephigram exercise 1 First we plot the temperature

2
Tephigram exercise 1 First we plot the temperature

3
Tephigram exercise 1 The red dots are the humidity

4
Tephigram exercise 1 Depth of the PBL?

5
Tephigram exercise 1 Depth of the PBL Approx 100 hPa

6
Tephigram exercise 1 Q: RH at 1000 hPa?

7
Tephigram exercise 1 RH=rv/rs = 5 / 7.7 = 65%

8
**Depth of the PBL=100hPa. RH@1000hPa=65% @900hPa=85%**

Is the PBL well mixed? Potential temperature at 800 hPa? (two ways)

9
**Potential temperature at 800 hPa?**

291K – Two ways to read…

10
700? Potential temperature at 800 hPa? 291K – Two ways to read…

11
**What is the condensation temperature and pressure of parcel at 1000 hPa?**

910 hPa and 2.5oC Tephigram exercise 2

12
**What is dew point temperature of parcel at 1000 hPa?**

Approximately 4oC

13
**Rainfall evaporated into parcel at 1000 hPa?**

Becomes saturated at 7oC, called the “wet-bulb temperature” Mixing ratio at this point is 6.3 g kg-1

14
**What is the equivalent potential temperature of parcel at 1000 hPa?**

22.5oC – this is the same as the equivalent temperature.

15
**What is the equivalent potential temperature of parcel at 900 hPa?**

900 hPa = 23oC, 700hPa off the page, different tephigram bounds required It is increasing with height.

16
**LCL is 910 hPa (same as condensation pressure). LFC undefined.**

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

17
**What is dew point temperature of parcel at 1000 hPa?**

Approximately 4oC

18
E F D C B A

20
**Tephigram V: Convective Instability**

21
**Convective Instability**

22
**Tephigram V: Convective Instability**

23
**Tephigram V: Convective Instability**

24
**Tephigram V: Convective Instability**

Stable -8C and -14C

28
Gate sounding

Similar presentations

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google