conceptual model: rapid cyclogenesis

38
1 Conceptual Model: Rapid Cyclogenesis How to use MSG satellite images similarities to and improvements over MTP ontact person: eronika Zwatz-Meise watz - meise @zamg. ac .at ersion 1.0. 13 July 2004

Upload: raja

Post on 14-Jan-2016

28 views

Category:

Documents


0 download

DESCRIPTION

Conceptual Model: Rapid Cyclogenesis. How to use MSG satellite images similarities to and improvements over MTP. Contact person: Veronika Zwatz-Meise [email protected] Version 1.0. 13 July 2004. CM: Rapid cyclogenesis. MTP channels in comparison with the corresponding MSG channels - PowerPoint PPT Presentation

TRANSCRIPT

Page 1: Conceptual Model:  Rapid Cyclogenesis

1

Conceptual Model: Rapid Cyclogenesis

How to use MSG satellite images

similarities to and improvements

over MTP

Contact person:Veronika [email protected] 1.0. 13 July 2004

Page 2: Conceptual Model:  Rapid Cyclogenesis

2

CM:Rapid cyclogenesis

• MTP channels in comparison with the corresponding MSG channels

• CM Rapid cyclogenesis: IR image + relevant NWP parameters

• MSG additional channels + Channel combinations

• (WV and WV difference images)

Page 3: Conceptual Model:  Rapid Cyclogenesis

3

IR sequence

• Multilevel frontal cloud band• Low cloud head at rear side of frontal cloud

band• Rapid dissolution of cloud at the rear side of

the low cloud head• Rapid development of spiral structure• Development of Cbs at developed cloud

spiral

Page 4: Conceptual Model:  Rapid Cyclogenesis

4

MTP: IR/03 UTC

As the image time between MTP and MSG differs, a shift between the cloud systems can be noticed in the two images

Page 5: Conceptual Model:  Rapid Cyclogenesis

5

MSG: CH09/03 UTCSharper contours throughimproved space resolution;consecutive sequence only from MSG

Page 6: Conceptual Model:  Rapid Cyclogenesis

6

MSG: CH09/06 UTC

Page 7: Conceptual Model:  Rapid Cyclogenesis

7

MSG: CH09/09 UTC

Page 8: Conceptual Model:  Rapid Cyclogenesis

8

MSG: CH09/12 UTC

Page 9: Conceptual Model:  Rapid Cyclogenesis

9

MSG: CH09/15 UTC

Page 10: Conceptual Model:  Rapid Cyclogenesis

10

MSG: CH09/18 UTC

Page 11: Conceptual Model:  Rapid Cyclogenesis

11

WV sequence• Dark stripe in WV approaches the cloud

head area

• Dark stripe becomes darker and begins to dissolve cloud at the rear edge of the cloud head area

• In Ch05 double structure of the dark stripe with different developments visible– Refinement of CM possible ?!

• Development of a dark area in the spiral center

Page 12: Conceptual Model:  Rapid Cyclogenesis

12

MTP: WV/03 UTC

Page 13: Conceptual Model:  Rapid Cyclogenesis

13

MSG: CH05/03 UTCSharper contours throughimproved space resolution;consecutive sequence only from MSG;In MSG two WV channels:Ch05: WV information from high layers

Page 14: Conceptual Model:  Rapid Cyclogenesis

14

MSG: CH05/06 UTC

Page 15: Conceptual Model:  Rapid Cyclogenesis

15

MSG: CH05/09 UTC

Page 16: Conceptual Model:  Rapid Cyclogenesis

16

MSG: CH05/12 UTC

Page 17: Conceptual Model:  Rapid Cyclogenesis

17

MSG: CH05/15 UTC

Page 18: Conceptual Model:  Rapid Cyclogenesis

18

MSG: CH05/18 UTC

Page 19: Conceptual Model:  Rapid Cyclogenesis

19

MSG: CH06/03 UTCIn MSG two WV channelsCh06: gives more information from lower layers when comapres Ch05;double structure of black stripes only in last time period resognisable -downward protrusion of dry air

Page 20: Conceptual Model:  Rapid Cyclogenesis

20

MSG: CH06/06 UTC

Page 21: Conceptual Model:  Rapid Cyclogenesis

21

MSG: CH06/09 UTC

Page 22: Conceptual Model:  Rapid Cyclogenesis

22

MSG: CH06/12 UTC

Page 23: Conceptual Model:  Rapid Cyclogenesis

23

MSG: CH06/15 UTC

Page 24: Conceptual Model:  Rapid Cyclogenesis

24

MSG: CH06/18 UTC

Page 25: Conceptual Model:  Rapid Cyclogenesis

25

CM:Rapid Cyclogenesis

• MTP Satellite images

• MTP channels in comparison with the corresponding MSG channels

• CM Rapid cyclogenesis: IR/WV image + relevant NWP parameters

• MSG additional channels + Channel combinations

• (WV and WV difference images)

Page 26: Conceptual Model:  Rapid Cyclogenesis

26

Ch09;equ.thicknessTFP

Frontal characteristics inhigh gradient of thickness and TFP;high thickness gradient in cloud head area

Page 27: Conceptual Model:  Rapid Cyclogenesis

27

Ch09;TA 700 hpa

Frontal characteristics well seen inTA at 700 hPa:WA shield and CA behind CF

Page 28: Conceptual Model:  Rapid Cyclogenesis

28

Ch09;Height contours 1000 hPa

Distinct pressure minimum close to the surface(1000 hPa)

Page 29: Conceptual Model:  Rapid Cyclogenesis

29

Ch09;height contours500 hPa

Upper level trough at the rear sideof the cloud head

Page 30: Conceptual Model:  Rapid Cyclogenesis

30

Ch09;jet streak300 hPa

Distinct jet streak from N, NW;bending to western orientation;cloud head in exit region

Page 31: Conceptual Model:  Rapid Cyclogenesis

31

Ch09;jet streakPVA300 hPa

Distinct PVA max at 300 hPa in left exit region of the jet streakand in the cloud head area;PVA max close to the jet axis:shear and curvature vorticity

Page 32: Conceptual Model:  Rapid Cyclogenesis

32

Ch09;height ofPV = 2 units

Stratospheric air (PV =2) down to 600 hPa behind the cloud head;this corresponds to the dark stripein the WV image

Page 33: Conceptual Model:  Rapid Cyclogenesis

33

Ch05;zeroline ofshear vort.300 hPa

CH05: WV in high layersZeroline of shear vorticity issomewhat on the anticyclonic side of the black stripe

Page 34: Conceptual Model:  Rapid Cyclogenesis

34

Ch06;zeroline ofshear vort.300 hPa

CH06: WV in lower layers than in Ch05Zeroline of shear vorticity is at the boundary between dry and humid air;WV boundary is inclined upward;dry air tilted with height

Page 35: Conceptual Model:  Rapid Cyclogenesis

35

CM:Rapid Cyclogenesis

• MTP Satellite images

• MTP channels in comparison with the corresponding MSG channels

• CM Rapid cyclogenesis: IR image + relevant NWP parameters

• MSG additional channels + Channel combinations

• WV and WV difference images

Page 36: Conceptual Model:  Rapid Cyclogenesis

36

139:The IR ch09 is inverted

Frontal cloudband:violet: multilayeredCloud head:yellow: lowviolet: beginning convection andspiral structure

The two black stripes fromWV channel 05 are an indication for the double structure in the convective partof the cloud head

Page 37: Conceptual Model:  Rapid Cyclogenesis

37

MSG:139:The IR ch09 is not invertedbut used as original radiation

Brown: thin cold ice cloudBrown-red:thick,

multilayered cloudYellow: thick water cloud

The two black stripes fromWV channel 05 are an indication for the double structure in the convective partof the cloud head

Page 38: Conceptual Model:  Rapid Cyclogenesis

38

134

Frontal cloudband:brown:multilayeredCloud head:yellow: lowbrown: beginning convection andspiral structure

The two black stripes fromWV channel 05 are an indication for the double structure in the convective partof the cloud head