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

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050890

Filename

6050890