Transcript Adapt RGB colour tables to lower latitudes

Australian VLab Centre of Excellence
National Himawari-8
Training Campaign
Adapting RGB products to low
latitudes
Part 1a: Instructions
• Now that you have downloaded the PowerPoint file, please read the
Instructions in Parts 1a (this slide) and familiarise yourself with the
Learning Outcomes in slide 1b (next slide)
• Print out the Worksheet in Part 2a of this file (if applicable)
• Examine the Pre-activity Resources in Part 2b of this file (if applicable).
• Download the appropriate accompanying Video Recording (.wmv file).
The recording is typically of 3-13 minute duration.
• Commence listening to the Recording. Pause the Recording whenever
you want to annotate notes on the Worksheet.
• You may wish to examine the slides in Part 3 of this file in Slideshow
mode when you stop the Recording. Note that Rapid Scan imagery in
the animations embedded in the PowerPoint slides is often clearer than
in the Recording.
• Towards the end of the recording, recommended answers for the
exercises are sometimes given.
Part 1b: Learning Outcomes
At the end of this exercise you will:
• Have a basic understanding of some modifications that are required for the
Severe Convection RGB and the Microphysics RGB products so that these
can be effectively used by Operational Forecasters at low latitudes.
• Note – corresponding WMO-1083 Capabilities and BOM Enabling Skills are
given on the link "Learning Outcomes" on the National Himawari-8
Training Campaign homepage.
Part 2a: Worksheet for the exercise
• There is no "worksheet" associated with this activity
Part 2b: Pre-activity resources
• There are no "pre-activity resources" associated with this activity
Part 3: Severe Convection RGB product adapted to colder
troposphere temperatures
Beam
Red
Green
Blue
Channel
Range
Gamma
WV6.2 - WV7.3 -35 ... +5 K
1.0
IR3.9 – IR10.8
-5 ... +60 K
0.5
NIR1.6 – VIS0.6 -75 ... +25 %
1.0
Gamma 2
1.0
1.0
1.0
-5 ... +75 K
-5 ... +40 K
Green channel
+40K cold low
troposphere
+75K tropical
Kerkmann pers. comm. 2012)
Part 3: Severe Convection RGB product
adapted to colder troposphere temperatures
Melbourne
Melbourne
Small ice crystals
Large ice crystals
EUMETSAT Severe Convection RGB recipe (LHS), Severe
Convection RGB tuned for Australian conditions (RHS)
(Melbourne Severe Storm 25 December 2011)
images courtesy JMA and BOM
Part 3: Microphysics RGB adapted
to warmer surface temperatures
(fog/low level cloud, South Africa)
Scientific Applications of RGB Products – Jochen Kerkmann
WMO-EUMETSAT Workshop on RGB Satellite Products: Standards, Applications and Opportunities (17-19 September, Seeheim,
Germany)