indian ocean convection seen by the s-polka radar in dynamo
DESCRIPTION
Indian Ocean Convection Seen by the S-PolKa Radar in DYNAMO. R. Houze and D. Hence, S. Brodzik , K. Rasmussen, S.Powell , H. Barnes, B. Dolan, K. Chakravarty , C. Burleyson , Z. Li, S. Ellis, T. Weckwerth , J. Vivekanandan , J. Hubbert , W.-C. Lee. - PowerPoint PPT PresentationTRANSCRIPT
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Indian Ocean Convection Seen by the S-PolKa Radar in
DYNAMO
AMS Conf. on Hurricanes and Tropical Meteorology, Ponte Vedra, FL, 19 April 2012
R. Houzeand
D. Hence, S. Brodzik, K. Rasmussen, S.Powell, H. Barnes, B. Dolan, K. Chakravarty, C. Burleyson, Z. Li,
S. Ellis, T. Weckwerth, J. Vivekanandan, J. Hubbert, W.-C. Lee
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DYNAMO Radar experiment goal
Characteristics and evolution of the MJO cloud population in the region where the disturbance builds up
Addu Atoll
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Clouds in the moist layer
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Humidity gradient layers and nonprecipitating clouds
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Long lines of cumulus
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Cold pool examples seen in differential
reflectivity (ZDR)
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Deep precipitating convection
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Rain over area scanned by S-PolKa
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4 km
8 km
graupel
small icelarge non-melting ice
heavy rain
melting snow
Small cumulonimbus
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Moderate cumulonimbus
Doppler velocity
Hydrometeor type graupel
small ice
Largenon-melting ice
heavyrainmelting
ice
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5 km
10 km
Broad stratiform region of a mesoscale
system
melting snow
graupel
50 dBZ!
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Large mesoscale
system
Stratiform
Convective
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Convection feeding into a
large MCSin sheared
environment
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Momentum transport
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Biggest MCS of first active phase:weak unidirectional shear
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Larger than mesoscale organization
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Giant Rings of Convection
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Westerly Surges
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Moist layer• Humidity layers• Cumulus lines and cold pools
Deep convection• Microphysics• Anvil clouds of deep convection• Mesoscale systems• Effects of shear• Larger than mesoscale organization
SUMMARY
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EndThis research was sponsored by NSF grants AGS-1059611 and DOE grant
DE-sc0001164/er-64752.