2009 Workshop:g waves and spread F in S Am
From CedarWiki
South American Initiative to study the causal linkage between thermospheric gravity activity and equatorial spread F development
Anasazi North, 1300-1500 (Part 1) and 1930-2130 (Part 2), 29 June 2009
Conveners
John Meriwether
David Fritts
Michael Mendillo
Jonathan Makela
Andy Gerrard
Cesar Valladares
Workshop Categories
Altitudes: IT - Latitudes: equatorial - Inst/Model: optical - Other: radar, GPS, TEC
Format of the Workshop
Short Presentations
Estimated attendance
50
Special technology requests
none
Description
A new direction in South American ground-based aeronomy studies is taking shape with the aim of studying the possible causal linkage between thermospheric gravity wave activity and equatorial spread F from not only a local but also a broad-scale perspective. Two bistatic Fabry-Perot observatories are being established in Brazil (near Cariri) and Peru (Huancayo, Arequipa, and Jicamarca) that will measure the meridional and zonal thermospheric neutral wind components within a common volume of 100 km in extent. These results would be combined with simultaneous all-sky imaging of the 630-nm nightglow that would provide diagnostics regarding the development of airglow depletion structure. The combination of the two sets of measurements would provide the opportunity to seek out any causal relationship that might exist between the onset of gravity wave activity and the possible subsequent nightglow depletion structures within the same common volume of the thermosphere. These results would be supplemented with Jicamarca observations of F-region plasma structures, GPS, and TEC measurements regarding the large scale distribution of plasma within the Appleton anomalies. Also contributing would be results from the all-sky imaging of plasma structures from Argentina and Brazil as well as thermospheric wind measurements from Chile, Brazil, and possibly El Leoncito. Twenty-four hours of observations of the thermospheric wind at Huancayo provided by the SOFDI daytime capability for thermospheric neutral wind measurements would provide the important data regarding tidal winds that is necessary to support the analysis of the propagation of gravity waves into the thermosphere from tropospheric sources.
Workshop Summary
This is where the final summary workshop report will be.
Presentation Resources
Upload presentation and link to it here. Links to other resources.
- Status update: RENOIR in Brazil (J. Makela; Univ. Illinois)
- N.Zabotin, Univ. Colorado at Boulder, Capabilities of LISN's VIPIR/Dynasonde systems in studying the acoustic gravity wave activity.
Campaign Resources: Please follow this link to post information on available instrumentation for the September/October 2009 campaign period.
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