In this study, a new high-latitude empirical model is introduced, named; for Auroral energy Spectrum and High-Latitude Electric field variabilitY; (ASHLEY). This model aims to improve specifications of soft electron; precipitations and electric field variability that are not well; represented in existing high-latitude empirical models. ASHLEY consists; of three components, ASHLEY-A, ASHLEY-E and ASHLEY-Evar, which are; developed based on the electron precipitation and bulk ion drift; measurements from the Defense Meteorological Satellite Program (DMSP); satellites during the most recent solar cycle. On the one hand, unlike; most existing high-latitude electron precipitation models, which have; assumptions about the energy spectrum of incident electrons, the; electron precipitation component of ASHLEY, ASHLEY-A, provides the; differential energy fluxes in the 19 DMSP energy channels under; different geophysical conditions without making any assumptions about; the energy spectrum. It has been found that the relaxation of spectral; assumptions significantly improves soft electron precipitation; specifications with respect to a Maxwellian spectrum (up to several; orders of magnitude). On the other hand, ASHLEY provides consistent mean; electric field and electric field variability under different; geophysical conditions by ASHLEY-E and ASHLEY-Evar components,; respectively. This is different from most existing electric field models; which only focus on the large-scale mean electric field and ignore the; electric field variability. Furthermore, the consistency between the; electric field and electron precipitation is better taken into account; in ASHLEY.
