Version 0.3, 20 January 2004 Slide: 1 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) DAY-TIME CONVECTION Author:Jochen Kerkmann (EUMETSAT) Contributors:D. Rosenfeld (HUJ)

Version 0.3, 20 January 2004 Slide: 2 Note: in this Powerpoint presentation (in most cases) the SEVIRI images are not inverted, i.e. displayed as solar channels. If a channel is inverted, this is denoted by the small letter "i".

Version 0.3, 20 January 2004 Slide: 3 PART 1: MSG SEVIRI CHANNELS USEFUL TO MONITOR CONVECTION DAY-TIME

Version 0.3, 20 January 2004 Slide: 4 Recommended Channels HRVISfine-scale structures VIS0.6optical thickness of clouds NIR1.6particle size and phase IR3.9particle size and phase WV6.2upper-level moisture WV7.3mid-level moisture, early convection IR10.8top temperature

Version 0.3, 20 January 2004 Slide: 5 MSG-1 23 April :00 UTC Channel 12 (HRVIS) Ghana HRVIS Fine Scale Structures Cirrus Outflow Overshooting Top

Version 0.3, 20 January 2004 Slide: 6 MSG-1 8 June :00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Cloud Streets The Channel

Version 0.3, 20 January 2004 Slide: 7 MSG-1 8 June :00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Orographic Convection Spain Orographic Convection

Version 0.3, 20 January 2004 Slide: 8 MSG-1 5 August :30 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Spain Spanish Plume

Version 0.3, 20 January 2004 Slide: 9 MSG-1 7 August :30 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Lac Leman ShadowMesoscale Convective System Single Cb

Version 0.3, 20 January 2004 Slide: 10 MSG-1 13 June :00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Mesoscale Convective System Po Valley Thin Cirrus Cloud Streets Coastal Convergence

Version 0.3, 20 January 2004 Slide: 11 MSG-1 13 June :00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Cloud Streets Coastal Convergence

Version 0.3, 20 January 2004 Slide: 12 MSG-1 5 June :45 UTC Channel 01 (VIS0.6) VIS0.6 Optical Thickness Thick Cb CloudThin Cirrus Anvil

Version 0.3, 20 January 2004 Slide: 13 MSG-1 5 June :45 UTC Channel 03 (NIR1.6) NIR1.6 Particle Size and Phase Small Ice Particles Large Ice Particles Water Clouds

Version 0.3, 20 January 2004 Slide: 14 MSG-1 5 June :45 UTC Channel 04 (IR3.9) IR3.9 Particle Size and Phase Small Ice Particles Large Ice Particles Water Clouds

Version 0.3, 20 January 2004 Slide: 15 MSG-1 5 June :45 UTC Channel 06i (WV7.3) WV7.3 Mid-Level Moisture Dark Stripe High Mid-Level Moisture

Version 0.3, 20 January 2004 Slide: 16 MSG-1 5 June :45 UTC Channel 09 (IR10.8) IR10.8 Top Temperature Warm Clouds Cold Clouds

Version 0.3, 20 January 2004 Slide: 17 PART 2: CHANNEL DIFFERENCES USEFUL TO MONITOR CONVECTION DAY-TIME

Version 0.3, 20 January 2004 Slide: 18 Recommended Differences NIR1.6 - VIS0.6optical thickness, phase, particle size IR3.9 - IR10.8optical thickness, phase, particle size, emissivity IR8.7 - IR10.8optical thickness IR IR10.8optical thickness WV6.2 - IR10.8overshooting tops WV6.2 - WV7.3overshooting tops

Version 0.3, 20 January 2004 Slide: 19 MSG-1 5 June :45 UTC Difference Image NIR1.6 - VIS0.6

Version 0.3, 20 January 2004 Slide: 20 MSG-1 5 June :45 UTC Difference Image (NIR1.6 - VIS0.6)i Note: same as previous image, but black/white inverted (i = inverted)

Version 0.3, 20 January 2004 Slide: 21 MSG-1 5 June :45 UTC Difference Image IR3.9 - IR10.8

Version 0.3, 20 January 2004 Slide: 22 MSG-1 5 June :45 UTC Difference Image IR8.7 - IR10.8

Version 0.3, 20 January 2004 Slide: 23 MSG-1 5 June :45 UTC Difference Image IR IR10.8

Version 0.3, 20 January 2004 Slide: 24 MSG-1 5 June :45 UTC Difference Image WV6.2 - IR10.8

Version 0.3, 20 January 2004 Slide: 25 MSG-1 5 June :45 UTC Difference Image WV6.2 - WV7.3

Version 0.3, 20 January 2004 Slide: 26 MSG-1 5 June :45 UTC Difference Image WV6.2 - IR10.8

Version 0.3, 20 January 2004 Slide: 27 MSG-1 5 June :45 UTC Difference Image WV6.2 - WV7.3

Version 0.3, 20 January 2004 Slide: 28 PART 3: RECOMMENDED RED-GREEN-BLUE (RGB) COLOUR COMPOSITES FOR MONITORING CONVECTION DAY-TIME

Version 0.3, 20 January 2004 Slide: 29 Recommended RGBs Daytime Red: Cloud depth and amount of cloud water and ice, provided by the visible reflectance at 0.6  m. Green:Cloud particle size and phase, approximated by the 1.6  m or 3.9  m solar reflectance component. Blue:Temperature, provided by the 10.8  m channel.

Version 0.3, 20 January 2004 Slide: 30 Recommended RGBs Daytime - HRVIS Red: Cloud optical depth and detailed cloud top structures, provided by the HRVIS channel. Green:Cloud optical depth and detailed cloud top structures, provided by the HRVIS channel. Blue:Temperature, provided by 10.8  m, or cloud particle size and phase, provided by the NIR1.6 or IR3.9 channel.

Version 0.3, 20 January 2004 Slide: 31 Typical Convective Development - Daytime - VIS0.6NIR1.6IR3.9IR10.8 I. Very early stagewhitewhitewhitelight grey (low, warm water cloud)opt thickwaterwaterwarm II. First convection*whitewhitewhitedark grey (first convective towers)opt thicksupercooledsupercooledcoldwater III. First icingwhitelight greygreyblack (transformation in Cb)opt thicksmall icesmall icevery cold IV. Large icingwhitedark greyblackblack (Cb anvils)opt thicklarge icelarge icevery cold *This phase is more frequent in Africa, i.e. it is more easy to find examples for this phase in tropical convection

Version 0.3, 20 January 2004 Slide: 32 RedGreenBlue VIS0.6IR3.9IR10.8RGB I. Very early stage white-light yellow II. First convection yellow III. First icing orange IV. Large icing25500red RGB

Version 0.3, 20 January 2004 Slide: 33 RGB 0.6 / 3.9 / 10.8 I. Very early stagewhite-light yellow II. First convectionyellow III. First icingorange IV. Large icingred I II III IV RGB

Version 0.3, 20 January 2004 Slide: 34 RedGreenBlue VIS0.6NIR1.6IR10.8RGB I. Very early stage white-light yellow II. First convection yellow III. First icing orange IV. Large icing red-orange RGB

Version 0.3, 20 January 2004 Slide: 35 II. First Convection (Supercooled Clouds) MSG-1, 5 June 2003, 10:00 UTC, RGB Supercooled Water Clouds

Version 0.3, 20 January 2004 Slide: 36 III. First Icing MSG-1, 5 June 2003, 10:30 UTC, RGB Cb Icing

Version 0.3, 20 January 2004 Slide: 37 IV. Large Icing MSG-1, 5 June 2003, 11:30 UTC, RGB Large Ice Small Ice

Version 0.3, 20 January 2004 Slide: 38 V. Very Large Icing MSG-1, 5 June 2003, 13:30 UTC, RGB Large Ice

Version 0.3, 20 January 2004 Slide: 39

Version 0.3, 20 January 2004 Slide: 40 Low red: Dark and thin clouds

Version 0.3, 20 January 2004 Slide: 41

Version 0.3, 20 January 2004 Slide: 42 RedGreenBlue NIR1.6IR3.9IR10.8RGB I. Very early stage white-light yellow II. First convection yellow III. First icing brown IV. Large icing10000dark brown Other RGBs:

Version 0.3, 20 January 2004 Slide: 43 RedGreenBlue VIS0.6NIR1.6IR3.9RGB I. Very early stage white II. First convection white III. First icing khaki-brown IV. Large icing red-orange Other RGBs:

Version 0.3, 20 January 2004 Slide: 44 -RGB HRV - HRV - IR10.8 ( ) -RGB HRV - HRV - IR3.9 ( ) -RGB HRV - HRV - NIR1.6 ( ) RGBs with the HRVIS Channel

Version 0.3, 20 January 2004 Slide: 45 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-IR10.8i

Version 0.3, 20 January 2004 Slide: 46 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-IR3.9i

Version 0.3, 20 January 2004 Slide: 47 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-NIR1.6

Version 0.3, 20 January 2004 Slide: 48 Channel 12 (HRV) RGB HRV-HRV-IR10.8i MSG-1, 8 September 2003, 15:00 UTC

Version 0.3, 20 January 2004 Slide: 49 Channel 12 (HRV) RGB HRV-HRV-IR3.9i MSG-1, 8 September 2003, 15:00 UTC

Version 0.3, 20 January 2004 Slide: 50 Channel 12 (HRV) RGB HRV-HRV-NIR1.6 MSG-1, 8 September 2003, 15:00 UTC

Version 0.3, 20 January 2004 Slide: 51 -RGB RGBs with Difference Images

Version 0.3, 20 January 2004 Slide: 52 MSG-1 5 June :45 UTC RGB Composite R = VIS0.6 - NIR1.6 G = IR3.9 - IR10.8 B = WV7.3 - WV6.2