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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG). RGB IMAGES: PART 05 RGB COMPOSITES WITH CHANNEL 12 AND THEIR INTERPRETATION Author:Jochen Kerkmann (EUMETSAT) [email protected]. PART 5: RED-GREEN-BLUE COLOUR COMPOSITES WITH CHANNEL 12 (HRV) AND THEIR INTERPRETATION. - PowerPoint PPT Presentation
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Version 1.0, 30 June 2004
APPLICATIONS OFMETEOSAT SECOND GENERATION (MSG)RGB IMAGES: PART 05
RGB COMPOSITES WITH CHANNEL 12 AND THEIR INTERPRETATION
Author:Author: Jochen Kerkmann (EUMETSAT)Jochen Kerkmann (EUMETSAT)[email protected]@eumetsat.de
Version 1.0, 30 June 2004
PART 5:
RED-GREEN-BLUE COLOUR COMPOSITES WITH
CHANNEL 12 (HRV)AND THEIR INTERPRETATION
Version 1.0, 30 June 2004
• In order to preserve the high resolution of the HRV channel, it should be assigned to 2 colours
• The HRV has a three times higher resolution than the other channels, i.e. a zoom factor of 3 is needed for the IR channels
RGBs with the HRV Channel: Introduction
Version 1.0, 30 June 2004
Recommended Schemes for RGB Image Composites with Channel 12 (HRV)
RGB CompositeRGB Composite ApplicationsApplications TimeTime
RGB 12,12,09i: Clouds, Convection DayRGB 03,12,12: Snow, Fog Day
RGB 12,12,04-09: Severe Storms Day
1.2.
3.
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R = Channel 12 (HRV)G = Channel 12 (HRV)B = Channel 09i (IR10.8i)
1. RGB 12,12,09i("HRV Clouds")
(similar to traditional NOAA AVHRR 1,2,4)
Applications:Applications:
Clouds, Convection
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Recommended Range and Enhancement:Recommended Range and Enhancement:
Beam Channel Range Gamma Gamma2
Red 12 (HRV) 0 …+100 % 1.7 1.0Green 12 (HRV) 0 ... +100 % 1.7 1.0Blue 09i (IR10.8i) +203 ... +323 K 1.0 1.0
1. RGB 12,12,09i("HRV Clouds")
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Ch.12HRV
Ch.12HRV
Ch.09iIR10.8i
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Colour Interpretation of RGB 12,12,09i Images
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Comparison HRV vs RGB 12,12,09i
MSG-1, 13 June 2003, 14:00 UTCThe RGB 12,12,09i helps to detect thin Ci clouds and to
distinguish between thick Cb clouds and Ci anvils
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R = Channel 03 (NIR1.6)G = Channel 12 (HRV)B = Channel 12 (HRV)
2. RGB 03,12,12("HRV Fog")
Applications:Applications:
Snow, Fog
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Recommended Range and Enhancement:Recommended Range and Enhancement:
Beam Channel Range Gamma Gamma2
Red 03 (NIR1.6) 0 …+70 % 1.7 1.0Green 12 (HRV) 0 ... +100 % 1.7 1.0Blue 12 (HRV) 0 ... +100 % 1.7 1.0
2. RGB 03,12,12("HRV Fog")
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Ch.03NIR1.6
Ch.12HRV
Ch.12HRV
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Colour Interpretation of RGB 03,12,12 Images
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Comparison HRV vs RGB 03,12,12
MSG-1, 24 February 2003, 11:00 UTCThe RGB 03,12,12 helps to distinguish between fog and snow
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R = Channel 12 (HRV)G = Channel 12 (HRV)B = BTD 09-04 (IR10.8-IR3.9)
3. RGB 12,12, 09-04("HRV Severe Storms")
Applications:Applications:
Severe Storms
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Recommended Range and Enhancement:Recommended Range and Enhancement:
Beam Channel Range Gamma Gamma2
Red 12 (HRV) 70 …+100 % 1.7 1.0Green 12 (HRV) 70 ... +100 % 1.7 1.0Blue IR10.8-IR3.9 -60 ... -40 K 2.0 1.0
3. RGB 12,12,09-04("HRV Severe Storms")
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Ch.12HRV
Ch.12HRV
Ch.09-04
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Colour Interpretation of RGB 12,12,09-04 Images
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Comparison HRV vs RGB 12,12,09-04
MSG-1, 13 June 2003, 14:00 UTCThe RGB 12,12,09-04 helps to detect the most vigorous storms
(with the strongest updrafts)
