version 1.0, 30 november 2004 slide: 1 applications of meteosat second generation (msg) detection of...
TRANSCRIPT
Version 1.0, 30 November 2004 Slide: 1
APPLICATIONS OFMETEOSAT SECOND GENERATION (MSG)
DETECTION OF CONTRAILS
Author:Author: Jochen Kerkmann (EUMETSAT)Jochen Kerkmann (EUMETSAT) ([email protected])([email protected])
Contributors:Contributors: D. Rosenfeld (HUJ), HP Roesli (MeteoSwiss)D. Rosenfeld (HUJ), HP Roesli (MeteoSwiss)
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Contrails over Southern Germany26 September 2003
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB Image 03-02-01NIR1.6 / VIS0.8 / VIS0.6
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB Image 01-03-09VIS0.6 / NIR1.6 / IR10.8
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB Image 01-04-09VIS0.6 / IR3.9 / IR10.8
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB Image 02-03-04VIS0.8 / NIR1.6 / IR3.9
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB Image 03-04-09NIR1.6 / IR3.9 / IR10.8
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 01 (VIS0.6) Channel 02 (VIS0.8)
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 03 (NIR1.6) Channel 04 (IR3.9)
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 05 (WV6.2) Channel 06 (WV7.3)
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 07 (IR8.7) Channel 08 (IR9.7)
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 09 (IR10.8) Channel 10 (IR12.0)
Contrails
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Contrails over Southern Germany
MSG-1, 26 September 2003, 08:00 UTC
Channel 11 (IR13.4) Channel 12 (HRVIS)
Contrails
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MSG-126 September 200308:00 UTCChannel 12(HRV)
Contrails over Southern Germany
Click on the icon tosee the animation
(08:00 - 12:00 UTC,AVI, 6407 KB) !
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Contrails over Southern Germany
MSG-126 September 200309:00 UTCChannel 03(NIR1.6)
Click on the icon tosee the animation
(09:00 - 12:00 UTC,AVI, 2544 KB) !
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Contrails over Southern Germany
MSG-126 September 200309:00 UTCChannel 04(IR3.9)
Click on the icon tosee the animation
(09:00 - 12:00 UTC,AVI, 2483 KB) !
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Contrails over Southern Germany
26 September 2003, 08:00 UTC
Difference IR3.9 - IR10.8 Difference IR8.7 - IR10.8
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCDifference ImageIR12.0 - IR10.8
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCDifference ImageIR12.0 - IR10.8
Contrails
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Contrails over Southern Germany
MSG-126 September 200308:00 UTCRGB CompositeR = HRVG = HRVB = IR12.0 - IR10.8
Contrails
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Contrails over Southern Germany
MSG-126 September 200309:30 UTCRGB CompositeR = NIR1.6G = VIS0.8B = VIS0.6
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Contrails over Italy13 June 2003
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Contrailsover the
Thyrrhenian Sea
MSG-113 June 200312:00 UTCChannel 12(HRV)
Contrails
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Contrailsover the
Thyrrhenian Sea
MSG-113 June 200312:00 UTCDifference ImageIR12.0 - IR 10.8
Contrails
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MSG-1, 13 June 2003, 12:00 UTC, RGB Composite HRV-HRV-IR 10.8i
Contrails
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Contrails over Northern Italy19 November 2003
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Shallow Fog and ContrailsComparison MSG-1 vs NOAA-16
Fog boundaries and contrails look very similar MSG HRV has very similar characteristic
to NOAA VIS channels
Contrails Contrails
Fog
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ContrailsComparison MSG-1 vs NOAA-16
In some cases, the MSG IR channelsdo not resolve thin contrails
MSG IR10.8-IR12.0 NOAA AVHRR ch04-ch05
Contrails
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Contrails over Germany & Benelux, North Sea and Baltic Sea
05 September 2004
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Contrails
MSG-1, 05 Sep 2004, 15:00 UTC, RGB IR12.0-IR10.8, IR10.8-IR8.7, IR10.8
"Dust RGB" to Monitor Contrails
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MSG-1, 05 Sep 2004, 09:00 UTC, Difference Image IR12.0 - IR10.8
Contrails
Contrails
Contrails
Click on the icon tosee the animation
(09:00 - 13:00 UTC,AVI, 7925 KB) !
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SUMMARY
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Detection of Contrails
• HRV: straight white lines (if no low-level clouds) or dark lines (shadow on lower clouds)
• IR12.0 - IR10.8: dark lines• RGB HRV/HRV/IR12.0-IR10.8: straight yellow lines over blueish clear
ground• RGB IR12.0-IR10.8 / IR10.8-IR8.7 / IR10.8: dark blue lines
Large contrails can be detected in VIS, IR and WV channels,and also in differences like IR3.9-IR10.8 and IR8.7-IR10.8,but they appear most clearly in:
Contrails can be best observed from MSGin the early morning or late afternoon in the visible channels
(low sun angle and shadows help)