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)
06:12 UT
06:31 UT
06:42 UT
07:01 UT
07:12 UT
07:22 UT
07:42 UT
08:01 UT
08:12 UT
08:31 UT
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09:01 UT
09:12 UT
09:31 UT
09:42 UT
09:52 UT
10:12 UT
10:31 UT
10:42 UT
11:01 UT
11:31 UT
11:42 UT
11:52 UT
12:12 UT
12:22 UT
12:42 UT
12:52 UT
13:12 UT
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14:01 UT
14:12 UT
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14:52 UT
15:12 UT
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16:12 UT
16:31 UT
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16:52 UT
Thanks for your attention!
Et MERCI !!