Upload
jason
View
70
Download
2
Tags:
Embed Size (px)
DESCRIPTION
Chapter 3: isentropic analysis. 3.1 isentropic coordinate system 3.2 isentropic chart interpretation 3.3 vertical motion on isentropic charts. isentropic coordinates. derivation of the equations of motion in isentropic coordinates: on blackboard. isobaric coordinates. - PowerPoint PPT Presentation
Citation preview
Chapter 3: isentropic analysis
3.1 isentropic coordinate system3.2 isentropic chart interpretation3.3 vertical motion on isentropic charts
isentropic coordinates
isentropic coordinates
isobaric coordinates
pros and cons of isentropic coordinates can be found in this meted module, by J. Moore
derivation of the equations of motion in isentropic coordinates: on blackboard
Isentropic maps: some examples infer vertical motion – low levels
900850800
L
285 K
295 K
450900
Isentropic maps: some examples same time, higher level
295 K – relative humidity suggests that storm-relative motion has an easterly component in E Montana
500
200
300
200
325 KIsentropic maps: some examples
same time, upper levels infer vertical motion – relate to QG argument
200
sample isentropic charts showing winds, pressure, and winds
• College of Dupage• OU
280 K
2014/03/28/12Z
310 K 290 K
2014/03/28/12Z
diagnosing vertical motion on isentropic charts:impact of storm motion
time 1 time 1 time 2c
(u,v)storm-relative = (u,v) - c
This is discussed further in Section 6 of this meted module, by J. Moore
vertical motion & diabatic processes
parcelperspective
layerperspective
textbook case study: 3 Jan 2002, 00 UTC296 K surface
500 mb height & abs vort - same time
500 mb height & SLPsame time
500 mb height & Q vectors & Q divergence - same time
500 mb height & 700 mb omega - same time
IDV 3D plot of 296K isentropic surfacewind vectors on this surface
same time (00 Z on 3 Jan 2002)
x Greensboro
Greensboro (GSO) soundingsame time
GSO
pressure and winds on the 296K isentropic surfacesame time
296K pressure & wind 296K pressure & storm-relative wind
c = 8.5 m/s towards the ESE
296K pressure & storm-relative wind & mixing ratio (g/kg) – same time
296K pressure & storm-relative wind & precipitation (dBZ) – same time