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Nonprecipitating Phenomena Seen by the S-PolKa Radar in DYNAMO

Nonprecipitating Phenomena Seen by the S-PolKa Radar in DYNAMO. R. Houze University of Washington. DYNAMO Workshop, Hapuna Beach, Hawaii, 5 March 2013. Summary. Low-level humidity and cumulus features seen by S-PolKa Humidity Cumulus organization.

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Nonprecipitating Phenomena Seen by the S-PolKa Radar in DYNAMO

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  1. Nonprecipitating Phenomena Seen by the S-PolKa Radar in DYNAMO R. Houze University of Washington DYNAMO Workshop, Hapuna Beach, Hawaii, 5 March 2013

  2. Summary • Low-level humidity and cumulus features seen by S-PolKa • Humidity • Cumulus organization

  3. Humidity gradient layers and nonprecipitating clouds

  4. dBZ “Mantle Echoes” Knight and Miller (1998) Bragg scattering shows nonprecipitating cumulus in the moist layer ρhv ZDR

  5. Long lines of cumulus

  6. Lines of cumulus parallel to wind

  7. Slightly active moist layer Clouds building at cold pool boundaries

  8. End This research was sponsored by DOE ARM grant #DE-SC0001164/ER-64752

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