Version 1.0, 30 June 2004 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) RGB IMAGES: PART 05 RGB...
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Transcript of Version 1.0, 30 June 2004 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) RGB IMAGES: PART 05 RGB...
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.
Version 1.0, 30 June 2004
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
Version 1.0, 30 June 2004
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")
Version 1.0, 30 June 2004
Ch.12HRV
Ch.12HRV
Ch.09iIR10.8i
Version 1.0, 30 June 2004
Colour Interpretation of RGB 12,12,09i Images
Version 1.0, 30 June 2004
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
Version 1.0, 30 June 2004
R = Channel 03 (NIR1.6)G = Channel 12 (HRV)B = Channel 12 (HRV)
2. RGB 03,12,12("HRV Fog")
Applications:Applications:
Snow, Fog
Version 1.0, 30 June 2004
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")
Version 1.0, 30 June 2004
Ch.03NIR1.6
Ch.12HRV
Ch.12HRV
Version 1.0, 30 June 2004
Colour Interpretation of RGB 03,12,12 Images
Version 1.0, 30 June 2004
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
Version 1.0, 30 June 2004
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
Version 1.0, 30 June 2004
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")
Version 1.0, 30 June 2004
Ch.12HRV
Ch.12HRV
Ch.09-04
Version 1.0, 30 June 2004
Colour Interpretation of RGB 12,12,09-04 Images
Version 1.0, 30 June 2004
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)