UMD AOSC Seminar

Observations of Tropical Variability in the Upper Troposphere/ Lower Stratosphere: Insights from the SHADOZ Strategic Ozonesonde Network

Professor Anne Thompson

The Pennsylvania State University
Department of Meteorology

Strategic ozonesonde networks [Thompson et al., 2010] assemble stations and coordinate launch times for a well-defined set of scientific goals. In recent years strategic networks supporting investigations into the upper troposphere and/or lower stratosphere (UT/LS) include: Match, designed to study polar ozone loss; the tropical SHADOZ, initiated for satellite validation and chemical studies (Thompson et al., 2003; ); the IONS series to examine inter-continental transport of mid-latitude pollution [Thompson et al., 2007a; 2008; Tarasick et al., 2009]. SHADOZ (Southern Hemisphere Additional Ozonesonde Network) has provided a wealth of information about stratosphere-troposphere exchange and other processes in the tropical UT/LS (see Fuglistaeler et al., 2009). Nearly 4000 ozone profiles from SHADOZ during 1998-2007 have been interpreted in terms of gravity (GW) or Rossby waves (RW) according to the method of Pierce and Grant [1998] as applied by Thompson et al. [2007a,b]. Wave characteristics for representative SHADOZ sites will be presented, along with related observations from tropical aircraft and satellite campaigns, e.g., TC4 (Tropical Composition, Clouds and Climate Coupling).

April 22, 2010, Thursday

Seminar: 3:30-4:30pm
Computer and Space Sciences (CSS) Building, Auditorium (Room 2400)
Refreshment is served at 3:00pm in the adjoining Atrium

[Contact: Ross Salawitch]
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