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Demonstration of Aerosol Property Profiling by Multiwavelength Lidar Under Varying Relative Humidity ConditionsDuring the months of July-August 2007 NASA conducted a research campaign called the Tropical Composition, Clouds and Climate Coupling (TC4) experiment. Vertical profiles of ozone were measured daily using an instrument known as an ozonesonde, which is attached to a weather balloon and launch to altitudes in excess of 30 km. These ozone profiles were measured over coastal Las Tablas, Panama (7.8N, 80W) and several times per week at Alajuela, Costa Rica (ION, 84W). Meteorological systems in the form of waves, detected most prominently in 100-300 in thick ozone layer in the tropical tropopause layer, occurred in 50% (Las Tablas) and 40% (Alajuela) of the soundings. These layers, associated with vertical displacements and classified as gravity waves ("GW," possibly Kelvin waves), occur with similar stricture and frequency over the Paramaribo (5.8N, 55W) and San Cristobal (0.925, 90W) sites of the Southern Hemisphere Additional Ozonesondes (SHADOZ) network. The gravity wave labeled layers in individual soundings correspond to cloud outflow as indicated by the tracers measured from the NASA DC-8 and other aircraft data, confirming convective initiation of equatorial waves. Layers representing quasi-horizontal displacements, referred to as Rossby waves, are robust features in soundings from 23 July to 5 August. The features associated with Rossby waves correspond to extra-tropical influence, possibly stratospheric, and sometimes to pollution transport. Comparison of Las Tablas and Alajuela ozone budgets with 1999-2007 Paramaribo and San Cristobal soundings shows that TC4 is typical of climatology for the equatorial Americas. Overall during TC4, convection and associated meteorological waves appear to dominate ozone transport in the tropical tropopause layer.
Document ID
20110007968
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Veselovskii, I.
(Physics Instrumentation Center Troitsk, Moscow Region, Russia)
Whiteman, D. N.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kolgotin, A.
(Physics Instrumentation Center Troitsk, Moscow Region, Russia)
Andrews, E.
(Colorado Univ. Boulder, CO, United States)
Korenskii, M.
(Physics Instrumentation Center Troitsk, Moscow Region, Russia)
Date Acquired
August 25, 2013
Publication Date
August 1, 2009
Publication Information
Publication: Journal of Atmospheric and Oceanic Technology
Volume: 26
Issue: 8
Subject Category
Meteorology And Climatology
Distribution Limits
Public
Copyright
Other

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