Stationary orographic cloud bands:Dynamic and sportive interests link satellite observations with mesoscale modeling

Hans VolkertDLR, Institut für Physik der Atmosphäre (IPA), Oberpfaffenhofen, DE

science aspectsuser & application aspects

Outline

- 1 Feb 2014 case with clouds as visualization aid

- decade-old problem revisited by modern means

- conclusions for science/user relation?

in memoriam: Joachim KUETTNER 1909-2011

Science director of GATE, ALPEX &c.(cf. SCI-POS 1085)

1 Feb 2014: MODIS (7-2-1) on TERRA, 10:27 UT

FR

DE

AT

CH

CZ

20 km

500 hPa, 12 UT

Inversion at 600 hPa

~ 4.2 km

PL

750 km500 km

20 m/s

1 Feb 2014: MODIS (7-2-1) on AQUA, 12:12 UTpx res. 250 m

Innsbruck

Jelenica Gora(Hirschberg)

1 Feb 2014: MODIS (7-2-1) on TERRA, 10:27 UT

1 Feb 2014: MODIS (7-2-1) on AQUA, 12:12 UT

1 Feb 2014: SEVIRI on Meteosat Second Generation

Poor man‘s loop: 8 frames at 15‘ intervals 10:30 – 12:15 UT

Variable speed loop: 37 frames at 15‘ intervals 07:00 – 16:00 UT

on my laptop at poster SCI-POS1085 in room 220D-E

Hres VIS px res 1 km

10:30 UT

SEVIRI on MSG

10:45 UT

SEVIRI on MSG

11:00 UT

SEVIRI on MSG

11:15 UT

SEVIRI on MSG

11:30 UT

SEVIRI on MSG

11:45 UT

SEVIRI on MSG

12:00 UT

SEVIRI on MSG

12:15 UT

SEVIRI on MSG

12:15 UT

SEVIRI on MSG

A L P S

Sudety mtns

So what ? Described before ?

Short revisit of an 75-year-old publication of 36 pp.

one of 35 photogrpaphs

21 May 1937 – vertical velocity in lee of Riesengebirge

20 m/s

+

+

+

–

–

–

~ 8 km

one of 11 diagrammes

waves & rotors behind Riesengebirge, 21 May 1937

regional gliding competition with 22 workable barogrammes

www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?dsId=3469671 www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?dsId=3470203

gliding on 1 Feb. 2014

Andrzej ŻUK (PL)3 h 06‘to max. 3900 m AGL

Wojciech MAJEWSKI (PL)1 h 54‘

to max. 5830 m AGL

What about mesoscale modelling ?

• vertical velocity calculated for 1 Feb 2014 case

• reference to MAP study

12° 15°

50°

52°

Meso-NH: 12 h simulation, VT = 12 UT, Dx = 2 km courtesy of Evelyne RICHARD

Realistic simulation: w in z=5000 m (m/s)

cf. MAP case over Eastern Alps: IOP10, 25 Oct. 1999

Meso-NH simulation

Dx = 2 km

Concluding remarks

• Sports people and scientists can share interest

• Some issues are around for decades

• New technologies can make things easier

• Stationarity documented rather than assumed

• Clouds here markers rather than actors

• Can glider data be used more as research

datasets?

• Mountains wave cases may be used as testbed for

high-resolution mesoscale modelling

Bonus material

- Webcam images from Patscherkofel - south of Innsbruck facing north- on 1 Feb 2014- 06:12 to 16:52 UT (43 frames during

MSG period)

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Thanks for your attention!

Et MERCI !!