{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

EES 108 Class 11

# EES 108 Class 11 - Lifting condensation level How high is...

This preview shows pages 1–13. Sign up to view the full content.

Lifting condensation level How high is it? Simple notion: Temp = 32°C • Dew point = 8°C Dew-point depression: T – T D  = 24°C Every kilometer of height Temp drops 10°C Dew point drops 2°C So the parcel is 8°C closer to  the dew point. Height of LCL above  ground: T 0  = air temp at ground T d  = dew point at ground Height T T d T – T d 0 32 8 24 1 22 6 16 2 12 4 8 3 2 2 0 km / C 8 LCL 0 d T T - =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
What makes air rise to LCL?
Local Convective Lifting

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Convergence
Frontal Wedging Warm Front: Warm air overtakes cold

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Frontal Wedging Warm Front: Warm air overtakes cold
Work an example Temperature at A: 27°C Mixing ratio at A: 10 g/kg Wet Adiabatic Lapse Rate: 5°C/km a) Dewpoint at A? b) Where is LCL? c) What is temperature at top? d) What is dew-point at top? e) What is temperature at B? f) What is dewpoint at B? g) What is relative humidity at B?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Orographic lifting
Orographic lifting

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Temperature at A: 27°C Mixing ratio at A: 10 g/kg Wet Adiabatic Lapse Rate: 5°C/km a) Dewpoint at A? b) Where is LCL? c) What is temperature at top? d)
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 33

EES 108 Class 11 - Lifting condensation level How high is...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online