A New Statistical Convection Model Derived from SuperDARN and Polar UVI Observations

Details A New Statistical Convection Model Derived from SuperDARN and Polar UVI Observations A New Statistical Convection Model Derived from SuperDARN and Polar UVI Observations

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsa11a..11r&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SA11A-11

Physics

2407 Auroral Ionosphere (2704), 2411 Electric Fields (2712), 2712 Electric Fields (2411)

Scientific paper

Since the inception of the SuperDARN concept of coordinated multi-radar observations of ionospheric convection in 1993 a vast database of primary measurements has been accumulated. Following on earlier work with data collected from the Goose Bay radar in the pre-SuperDARN era, we have applied this database to the statistical characterization of the global pattern of high-latitude convection. For a subset of the measurements it is possible to order the velocity according to the geometry of the UVI auroral oval as this is inferred from observations with the Polar UVI instrument. In this talk we will review the derivation of the new convection model and discuss the results of sorting by solar wind and auroral geometry. We find that certain features, obscured in the usual bin-averaging approach, are more pronounced when proper account is taken of the variability of structures in the convection pattern. We compare with previous work and discuss the application of the new model in situations where information on the auroral geometry is present, absent, or can be reasonably inferred from proxy observations.

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