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Kinematic and Moisture Environments of Convective Systems During TRMM-LBA: Preliminary Sounding AnalysesPreliminary radiosonde data are analyzed from a four station observation network that operated during TRMM-LBA. These data, which are undergoing quality control, are used to construct mean vertical profiles and time-height sections of u- and v- wind components, and also filtered time series analyses of layer mean relative humidity. Trends are identified in the humidity data which appear similar at all sites, and correlate well with multi-week changes in wind regime identified by Rickenbach et al. Higher-frequency modes of variation (3-5 day) also occur in the humidity and upper tropospheric winds and are spatially coherent among the four locations. The causes of these variations are explored, including interactions among upper tropospheric synoptic features. Finally, an attempt is made to relate the general morphology of convective systems to the vertical shear structure and thermodynamic changes that accompany contrasting wind regimes.
Document ID
20010020067
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Halverson, J. B.
(Maryland Univ. Baltimore County Catonsville, MD United States)
Rickenbach, T.
(Maryland Univ. Baltimore County Catonsville, MD United States)
Pierce, H.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Roy, B.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Ferreira, R. N.
(Universities Space Research Association Greenbelt, MD United States)
Fisch, G.
(Instituto Nacional de Pesquisas Espacias Brazil)
Einaudi, Franco
Date Acquired
August 20, 2013
Publication Date
January 1, 2000
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Convective Systems Observed during TRMM Field Campaigns
Location: San Francisco, CA
Country: United States
Start Date: December 15, 2000
End Date: December 19, 2000
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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