HR: 0830h
AN: A21A-02    [Abstracts]
TI: Where Did All the Ozone Go? : An Analysis of Tropospheric Ozonesondes from the IONS Campaign During the Summer of 2004 in the Northeastern US and Canada
AU: Thompson, A M
EM: anne@met.psu.edu
AF: Department of Meteorology, Penn State, University Park, PA,
AU: * Stone, J B
EM: jessebstone@gmail.com
AF: Department of Meteorology, Penn State, University Park, PA,
AU: Taubman, B
EM:
AF: Department of Meteorology, Penn State, University Park, PA,
AU: Joseph, E
EM:
AF: Howard University, Washington, DC,
AU: Witte, J
EM: witte@gavial.gsfc.nasa.gov
AF: NASA/GSFC, Greenbelt, MD,
AU: Kuscera, T
EM:
AF: NASA/GSFC, Greenbelt, MD,
AU: Merrill, J T
EM:
AF: University of Rhode Island, Narragansett, RI,
AU: Oltmans, S
EM:
AF: NOAA/CMDL, Boulder, CO,
AU: Schmidlin, F
EM:
AF: NASA/Wallops, Wallops Island, VA,
AU: Tarasick, D
EM:
AF: EC-MSC, Toront, Canada,
AB: A short-term ozonesonde network was formed in July-August 2004 to coordinate ozonesonde launches during the multi-site, multi-aircraft campaign called ICARTT/INTEX/NEAQS (International Consortium on Atmospheric Research on Transport and Transformation)/Intercontinental Transport Experiment/New England Air Quality Study. In IONS (INTEX Ozonesonde Network Study (http://croc.gsfc.nasa.gov/intex/ions.html ), nearly 300 soundings were launched from eleven North American stations and an oceanographic ship in the Gulf of Maine. The INTEX study region was dominated by a series of weak frontal systems that mixed aged pollution with stratospheric ozone in the middle troposphere. We have used meteorological tracers such as potential vorticity to examine cases of stratospheric intrusion over the INTEX campaign period at several of the sites. In addition, we are using a non hierarchical clustering method to look for distinct climate differences in sondes collected in 2004 at Wallops Island and comparing these with sondes taken at this station over the previous 10 years. The analysis suggests that indeed the meteorological conditions of the summer of 2004 led to reduced levels of ozone in the troposphere.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly