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DYnamical and Microphysical Evolution of Convective Storms Thorwald Stein, Robin Hogan, John Nicol...
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DYnamical and Microphysical Evolution of Convective Storms Thorwald Stein, Robin Hogan, John Nicol DYMECS
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Transcript of DYnamical and Microphysical Evolution of Convective Storms Thorwald Stein, Robin Hogan, John Nicol...
DYnamical and MicrophysicalEvolution of Convective Storms
Thorwald Stein,Robin Hogan, John Nicol
DYMECS
• MetOffice Nimrod data
• Rainfall radar images 1km res
• 5min interval• 1/32=0.03125
mm/hr
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100
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Rainfall [mm/hr] for 7 August 2010 06:10:00 Centered around the Chilbolton radar location
0.5 mm/hr
• Labelling algorithm• Threshold for
minimum rainfall• Threshold for
minimum feature size (4km2
)
50
100
150
200
2.0 mm/hr
• Labelling algorithm• Threshold for
minimum rainfall• Threshold for
minimum feature size (4km2
)
50
100
150
200
1.0 mm/hr
• Labelling algorithm• Threshold for
minimum rainfall• Threshold for
minimum feature size (4km2
)
50
100
150
200
1.0 mm/hr
• Keep label consistent between images (red)
• Register break ups (yellow)
• Highlight new storms (green)
• Store track (magenta) and lifetime
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100
150
200
• Per storm, store:– Area– Azimuth– Range– [u,v]– Centroid– Bounding box– Et cetera...
• Local rainfall maxima within storm (core, cell) work in progress...
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100
150
200
50
100
150
200
Following a long-lived storm
Processing tree (in minutes)
05:00 Nimrodrainfall dataproduced
10:00 Nimrod datafrom BADC nowat Chilbolton
10:30 Nimrod datacut to size on400x400km grid
0:00 Met Office Radar networkVolume scan11:00 Tracking done.
File with storm propsand labels produced.
11:30 New scanprocedure submittedto Chilbolton radar
Scan Scheduling
Scan Scheduling
Prioritize storms that are already beingtracked
Scan Scheduling
Prioritize storms that are already beingtracked
Scan Scheduling
