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3=VIS0.6 4=VIS0.8
7=NIR1.6
9=IR3.8 10=WV6.2 11=WV7.3 12=IR8.7
13=IR9.7 14=IR10.5 15=IR12.3 16=IR13.3
1=VIS0.4 2=VIS0.5 5=NIR0.9 6=NIR1.3
8=NIR2.3
FCI on Meteosat Third Generation (MTG)
Solar 1.0 km Thermal 2.0 km
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FCI Optical Design
AHI, ABI, VIIRS (not MODIS)
AHI, ABI, VIIRS, MODIS
AHI
MODIS
MODIS, VIIRS, ABI
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Cloud Phase RGB from FCI
Range
0 to 50 %
0 to 50 %
0 to 100 %
R NIR1.6
G NIR2.3
B VIS0.5/VIS0.6
Attention: if the VIS0.6 channel has higher resolution, up- or down-scaling is needed!
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1.6 2.25
NIR2.25: Cloud Microphysical Channel
MODIS 2.1 band has a central wavelength at 2.13 micron to be compared to the 2.25 micron for VIIRS, FCI, AHI/ABI
Ice absorption changes a lot between 2.13 and 2.25
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Cloud optical properties at 2.25 microns
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Cloud optical properties at 1.6 microns
ice clouds
water clouds
ice clouds
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Blue: ice clouds (Cb/Cs) Orange: water clouds (St/SC)
2.25mm to improve cloud phase on future GEO
Credits: Meteo France
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2005 06 25 11:57
Band 4 (VIS0.8) Band 5 (NIR1.6) Band 6 (NIR2.3)
20 August 2015, 00:00 UTC Typhoon Atsani, Pacific Ocean
AHI Solar Bands - zoom
1 km 2 km 2 km
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Convective storms with small ice
Him-08, AHI, 13 October 2015, 01:00 - 05:00 UTC
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AHI, Band 06 (NIR2.3), 01:00-05:00 UTC
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Band 03 (VIS0.6)
Overshooting Tops in Typhoon Koppu (Him-08)
Band 06 (NIR2.25) Rapid Scans: 2.0 km / 2.5 minutes
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2005 06 25 11:57
Band 6 (NIR2.3) Band 13 (IR10.4)
17 September 2017, 16:30 - 17:30 UTC Hurricane Maria
NIR2.25 for Particle Size (GOES-16)
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Not sure if water or ice clouds
NIR1.6, VIS0.8, VIS0.4
25 November 2015, 02:02 UTC Typhoon IN-FA, Pacific Ocean
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water clouds
NIR1.6, NIR2.3, VIS0.4
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ice
water
RGB Cloud Phase RGB Day Microphysics (with NIR1.6 & NIR2.3) (with IR3.9)
Credits: Danny Rosenfeld
Him-08 Cloud Phase RGB
9 September 2016, 03:40 UTC
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Looks like ice clouds
Natural Colour RGB - NIR1.6, VIS0.8, VIS0.6
VIIRS, 18 January 2017, 08:49 UTC
credits: HP Roesli
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But are water clouds
Cloud Phase RGB - NIR1.6, NIR2.3, VIS0.6
VIIRS, 18 January 2017, 08:49 UTC
credits: HP Roesli
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Red: IR12.4-IR10.4 (-6, +4 K) Green´: IR11.2-IR8.6 (0, +10 K) Blue: IR10.4 (273, 300 K) AHI, Dust RGB (tuned)
The dilemma of 4 IR window channels - Tuning of the Dust RGB to ABI / AHI –
- J. Kerkmann, EUMETSAT
Him-08, AHI, Cloud Phase RGB (05-06-02)
NEW Him-08 RGB: Cloud Phase RGB
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Him-08, AHI, 23 March 2018, 06:00 UTC
Convection RGB (credits: ePort Pro)
Tropical Cyclone Marcus, Australia
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Him-08, AHI, 23 March 2018, 06:00 UTC
Cloud Phase RGB (credits: ePort Pro)
Tropical Cyclone Marcus, Australia
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ice
water
Small ice
Credits: D. Gencic
GOES-16 Cloud Phase RGB
16 May 2017
Texas
(non-operational data)
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Cloud Phase RGB Convection RGB
Supercell, Texas, 16 May 2017, 21:27 – 23:02 UTC (5 min intervals)
GOES-16 Cloud Phase RGB (non-operational data)
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New RGB with NIR1.3 ?
Range
?
?
?
R ?
G ?
B ?
Possible inputs:
VIS0.6 (cloud thickness), NIR1.3 (high clouds), NIR1.6 (cloud phase), NIR2.3 (particle size)
IR12.3-IR10.5 (cloud thickness), IR IR10.5-IR3.9 (particle size), IR10.5 (cloud temperature)
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contrails ?
shallow
cumulus
low stratus
Deeper cumulus
???
MODIS Natural Colours RGB
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Low clouds not
visible
contrails ?
Deeper cumulus
MODIS NIR1.3 Band Strong enhancement: 0–2 % reflectance
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4 September 2017, 12:00 – 21:15 UTC (source: CIRA)
ABI Band 04 (NIR1.3)
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Band 02 (VIS0.6) Band 04 (NIR1.3)
5 September 2017, 12:00 – 20:00 UTC (source: CIRA)
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Slide: 30
Cloud Type RGB from Andrew Heidinger (CIMSS)
Red: 1.38, 0-10, Gamma = 1.5 Green: 0.64: 0-80, Gamma = .75 Blue: 1.6: 0-80, Gamma = 1.0
So this makes: cirrus = red opaque ice = yellow water clouds = cyan snow = green white = lofted water cloud
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Slide: 31
Cloud Type RGB from Andrew Heidinger (CIMSS)
Red: 1.3, 0-10, Gamma = 1.5 Green: 0.8, 0-80, Gamma = 1.0 Blue: 1.6, 0-80, Gamma = 1.0
cirrus = red opaque ice = yellow water clouds = cyan
GOES-16, ABI, 19 May 2017, 18:45 UTC
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Slide: 32
Dust RGB
GOES-16, ABI, 19 May 2017, 18:45 UTC
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Slide: 33
Cloud Type RGB from Andrew Heidinger (CIMSS)
Red: 1.3, 0-10, Gamma = 1.5 Green: 0.8, 0-60, Gamma = 1.0 Blue: 1.6, 0-60, Gamma = 1.0
cirrus = red opaque ice = yellow water clouds = cyan
GOES-16, ABI, 26 June 2017, 22:45 UTC
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Slide: 34
Dust RGB
GOES-16, ABI, 26 June 2017, 22:45 UTC
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Slide: 35 Cloud Type RGB from Andrew Heidinger (CIMSS)
Red: 1.3, 0-10, Gamma = 1.5 Green: 0.8, 0-60, Gamma = 1.0 Blue: 1.6, 0-60, Gamma = 1.0
cirrus = red opaque ice = yellow water clouds = cyan snow = green
GOES-16, ABI, 14 January 2018, 18:00 UTC
Credits: HP Roesli
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Natcol RGB
Met-10, SEVIRI, 07 Feb 2018, 12:00 UTC
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Cloud Type RGB
Goes-16, ABI, 07 Feb 2018, 12:00 UTC
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Sentinel-3 (launched on 16 Feb 2016)
Instruments:
Ocean and Land Color Instrument (OLCI)
Sea and Land Surface Temperature Radiometer (SLSTR)
SAR Radar Altimeter (SRAL)
Microwave Radiometer (MWR)
Precise Orbit Determination Package (consisting 3 instruments)
SLSTR Bands
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Sentinel-3a, SLSTR, 26 Feb 2018, 09:45 UTC Natural Colour RGB
Snow in Italy (Rome) Credits: HP Roesli
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Sentinel-3a, SLSTR, 26 Feb 2018, 09:45 UTC Cloud Phase RGB
Snow in Italy (Rome) Credits: HP Roesli
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Sentinel-3a, SLSTR, 26 Feb 2018, 09:45 UTC Cloud Type RGB
Snow in Italy (Rome) Credits: HP Roesli
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Summary
New RGBs for FCI: Already tested / implemented: True Colour RGB, Cloud Phase RGB, Fire Temperature RGB Proposed: Cloud Type RGB (with NIR1.3), Day Micro RGB (with NIR2.25) To be devised: Moisture RGB