Title :
Determination of precipitating electron fluxes from inversion of coordinated ALIS/EISCAT observations
Author :
Lamy, H. ; Simon, Carsten ; Gustavsson, B. ; Sergienko, T. ; Sandahl, I. ; Brandstrom, U.
Author_Institution :
Belgian Inst. for Space Aeronomy, Brussels, Belgium
Abstract :
In March 2008, discrete stable auroral arcs were investigated during a coordinated observational campaign between the European Incoherent Scatter Radar (EISCAT) and the Auroral Large Imaging System (ALIS). The two sets of data are inverted to retrieve fluxes of precipitating electrons. Both results are matching in energy and shape with a typical average precipitation energy of a few keV. Finally, by using the average energy spectrum of electrons deduced from ALIS data as input for the TRANS4 kinetic/fluid electron transport 1D model, computed auroral emissions are compared to ALIS observations and electron density profiles are compared to EISCAT profiles.
Keywords :
atmospheric electron precipitation; atmospheric techniques; aurora; AD 2008 03; ALIS data; ALIS-EISCAT observations; EISCAT profiles; European incoherent scatter radar; TRANS4 model; auroral arcs; auroral large imaging system; average precipitation energy; electron average energy spectrum; electron density profiles; kinetic-fluid electron transport model; precipitating electron fluxes; Atmospheric modeling; Computational modeling; Data models; Optical scattering; Radar imaging; Stimulated emission;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050890
