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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG). DETECTION OF CONTRAILS Author: Jochen Kerkmann (EUMETSAT) (kerkmann@eumetsat.de) Contributors: D. Rosenfeld (HUJ), HP Roesli (MeteoSwiss). Contrails over Southern Germany 26 September 2003. Contrails over Southern Germany. MSG-1
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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) DETECTION OF CONTRAILS Author: Jochen Kerkmann (EUMETSAT) (kerkmann@eumetsat.de) Contributors: D. Rosenfeld (HUJ), HP Roesli (MeteoSwiss)
Contrails over Southern Germany 26 September 2003
Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 03-02-01 NIR1.6 / VIS0.8 / VIS0.6 Contrails
Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 01-03-09 VIS0.6 / NIR1.6 / IR10.8 Contrails
Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 01-04-09 VIS0.6 / IR3.9 / IR10.8 Contrails
Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 02-03-04 VIS0.8 / NIR1.6 / IR3.9 Contrails
Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 03-04-09 NIR1.6 / IR3.9 / IR10.8 Contrails
Contrails over Southern Germany Contrails Channel 01 (VIS0.6) Channel 02 (VIS0.8) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails Channel 03 (NIR1.6) Channel 04 (IR3.9) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails Channel 05 (WV6.2) Channel 06 (WV7.3) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails Channel 07 (IR8.7) Channel 08 (IR9.7) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails Channel 09 (IR10.8) Channel 10 (IR12.0) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails Channel 11 (IR13.4) Channel 12 (HRVIS) MSG-1, 26 September 2003, 08:00 UTC
Contrails over Southern Germany MSG-1 26 September 2003 08:00-12:00 UTC HRV Channel Click on the image to see the animation !
Contrails over Southern Germany MSG-1 26 September 2003 09:00 - 12:00 UTC Channel NIR1.6 Click on the image to see the animation !
Contrails over Southern Germany MSG-1 26 September 2003 09:00 - 12:00 UTC Channel IR3.9 Click on the image to see the animation !
Contrails over Southern Germany Difference IR3.9 - IR10.8 Difference IR8.7 - IR10.8 26 September 2003, 08:00 UTC
Contrails over Southern Germany Contrails MSG-1 26 September 2003 08:00 UTC Difference Image IR12.0 - IR10.8
Contrails over Southern Germany Contrails MSG-1 26 September 2003 08:00 UTC Difference Image IR12.0 - IR10.8
Contrails over Southern Germany Contrails MSG-1 26 September 2003 08:00 UTC RGB Image HRV / HRV / IR12.0 - IR10.8
Contrails over Southern Germany MSG-1 26 September 2003 09:30 UTC RGB Image NIR1.6 /VIS0.8 / VIS0.6
Contrails over Italy 13 June 2003
Contrails over the Thyrrhenian Sea Contrails MSG-1 13 June 2003 12:00 UTC Channel 12 (HRVIS)
Contrails over the Thyrrhenian Sea Contrails MSG-1 13 June 2003 12:00 UTC Difference Image IR12.0 - IR 10.8
Contrails MSG-1, 13 June 2003, 12:00 UTC, RGB Composite HRV-HRV-IR 10.8i
Contrails over Northern Italy 19 November 2003
Shallow Fog and ContrailsComparison MSG-1 vs NOAA-16 Contrails Contrails Fog • Fog boundaries and contrails look very similar • MSG HRV has very similar characteristicto NOAA VIS channels
ContrailsComparison MSG-1 vs NOAA-16 Contrails MSG IR10.8-IR12.0 NOAA AVHRR ch04-ch05 In some cases, the MSG IR channelsdo not resolve thin contrails
Detection of Contrails 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: • HRVIS: 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 Contrails can be best observed from MSGin the early morning or late afternoon in the visible channels(low sun angle and shadows help)