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Clouds Ice cloud detection using the 8.7  m channel: areas of ice clouds (in particular thin cirrus) are red (positive difference), clear ground and water.

Published byRuth Henry Modified over 8 years ago

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Presentation on theme: "Clouds Ice cloud detection using the 8.7  m channel: areas of ice clouds (in particular thin cirrus) are red (positive difference), clear ground and water."— Presentation transcript:

1 Clouds Ice cloud detection using the 8.7  m channel: areas of ice clouds (in particular thin cirrus) are red (positive difference), clear ground and water clouds show up as blue shades (negative difference). MSG-1, 5 Jun 2003, 12:00, ch. 8.7 - 10.8 difference MSG-1, 5 Jun 2003, ch. 3.9, for comparison

2 Clouds Channel 01 (0.6  m) Channel 03 (1.6  m) Channel 04 (3.9  m) Ice and water clouds in the Southern Atlantic as seen by the VIS0.6, NIR1.6 and IR3.9 channels. MSG-1, 5 June 2003, 12:00 UTC

3 Clouds Channel 07 (8.7  m) Channel 09 (10.8  m) Channel 10 (12.0  m) Ice and water clouds in the Southern Atlantic as seen by the IR8.7, IR10.8 and IR12.0 channels. MSG-1, 5 June 2003, 12:00 UTC

4 MSG image over the Southern Atlantic on 5 June 2003. Ice/Water clouds separate in 8.7-10.8 versus 10.8-12.0  m BT plots. Thin Cirrus Water Cloud Thick ice clouds Infrared Temperature Difference - 87  m - 10.8  m Infrared Temperature Difference - 10.8  m - 12.0  m Ch. 0.6, 5 June 2003, 12:00 UTC Clouds

5 Channel 01 (0.6  m) Channel 03 (1.6  m) Channel 04 (3.9  m) Ice and water clouds over Angola as seen by the VIS0.6, NIR1.6 and IR3.9 channels. MSG-1, 5 June 2003, 12:00 UTC

6 Clouds Channel 07 (8.7  m) Channel 09 (10.8  m) Channel 10 (12.0  m) Ice and water clouds over Angola as seen by the IR8.7, IR10.8 and IR12.0 channels. MSG-1, 5 June 2003, 12:00 UTC

7 MSG image over the Angola on 5 June 2003. Ice/Water clouds separate in 8.7-10.8 versus 10.8-12.0  m BT plots. Thin Cirrus Water Cloud Thick ice clouds Infrared Temperature Difference - 87  m - 10.8  m Infrared Temperature Difference - 10.8  m - 12.0  m Ch. 0.6, 5 June 2003, 12:00 UTC Clouds

8 Thin Cirrus detection using the 8.7  m channel: areas of thin Cirrus clouds are red (positive difference). MSG-1, 25 Jun 2003, 10:00, ch. 8.7 - 10.8 difference MSG-1, 25 Jun 2003, ch. 3.9, for comparison

9 Clouds Channel 01 (0.6  m) Channel 04 (3.9  m) Channel 09 (10.8  m) Ice and water clouds over Eastern Africa as seen by the VIS0.6, IR3.9 and IR10.8 channels. MSG-1, 25 June 2003, 10:00 UTC

10 Clouds MSG-1 25 June 2003 10:00 UTC Difference Image Channels 8.7 - 10.8 Monitoring of thin Cirrus clouds.

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