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Clouds and auroras 3 December 2015 Jane Golding : Supervising - - PowerPoint PPT Presentation
Clouds and auroras 3 December 2015 Jane Golding : Supervising - - PowerPoint PPT Presentation
Clouds and auroras 3 December 2015 Jane Golding : Supervising Meteorologist, NSW and ACT Region Three 'etages' Low etage: surface to 8500 ft Clouds generally composed of water droplets Middle etage: 8500 20 000 ft Clouds generally composed
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Cloud types
Image from NOAA
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Cirrus/Cirrocumulus/Cirrostratus
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Altostratus/Altocumulus
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Nimbostratus
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Stratus/Cumulus/Stratocumulus
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Cumulonimbus
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When do you see Clouds
instability (low level troughs, warm and humid
summer time , jet streaks)
Orographically induced (winds hitting slopes)
When cold frontal system approaches, or in unstable mass behind Stuck under an inversion related to a high pressure system
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Which ones are likely to affect Aurora Viewing
- Frontal Cloud Bands (within ~8-12 hours of the front arriving)
- Large Decks of Stratocumulus
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Where do you get cloud information from Bureau
1. Public weather forecasts
CAVEAT spatially and temporarily averaged cloud information, depending on where you get it. http://www.Bureau.gov.au/info/wwords/
- 2. Himawari 8 http://satview.Bureau.gov.au
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Exploring the Bureau's Himawari-8 Public Viewer
http://satview.Bureau.gov.au/
image courtesy Bureau/JMA
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Comparing Himawari 8/9 with MTSAT-2
MTSAT-2 image courtesy JMA, Himawari-8 image courtesy NASA satellite images courtesy Japan Meteorological Agency (JMA)
MTSAT 2 Himawari 8
animation courtesy JMA/CIMSS
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Himawari-8 Public Viewer full domain view
image courtesy Bureau/JMA
Singapore Philippines Indonesia Fiji New Zealand Australia
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Layer Control Window – choose Coastal
image courtesy Bureau/JMA
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Try animation to see the movement of clouds
"+" to zoom in – click on image Start animation and speed this up "+"
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Some low level cloud type examples
(use Infrared Greyscale and Visible Greyscale to compare)
Cumulus over land Stratocumulus
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Some mid-high cloud type examples
(use Infrared Greyscale and Visible Greyscale to compare)
Altostratus Cirrostratus
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Cumulonimbus cloud
(use Infrared Greyscale and Visible Greyscale to compare)
Cumulonimbus
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Cumulonimbus cloud
(also use Zehr enhancement)
Cumulonimbus
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More Information on Himawari and the Bureau
- How to use the satellite viewer:
https://www.youtube.com/watch?v=mODSZFIYVqk
- The weather comes alive (about H-8 with beautiful
imagery): https://www.youtube.com/watch?v=d-GFADBBfcA
- Facts and figures about Himawari-8