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Characteristics of precipitating energetic electron fluxes relative to the plasmapause during geomagnetic storms

n this study we investigate the link between precipitating electrons from the Van Allen radiation belts and the dynamical plasmapause. We consider electron precipitation observations from the Polar Orbiting Environmental Satellite (POES) constellation during geomagnetic storms. Superposed epoch analysis is performed on precipitating electron observations for the 13 year period of 1999 to 2012 in two magnetic local time (MLT) sectors, morning and afternoon. We assume that the precipitation is due to wave-particle interactions ...

Whittaker, Ian; Clilverd, Mark; Rodger, Craig;

YEAR: 2014     DOI: 10.1002/2014JA020446

energetic electron precipitation; Plasmapause; POES

The effects and correction of the geometric factor for the POES/MEPED electron flux instrument using a multisatellite comparison

Measurements from the Polar-Orbiting Environmental Satellite (POES) Medium Energy Proton and Electron Detector (MEPED) instrument are widely used in studies into radiation belt dynamics and atmospheric coupling. However, this instrument has been shown to have a complex energy-dependent response to incident particle fluxes, with the additional possibility of low-energy protons contaminating the electron fluxes. We test the recent Monte Carlo theoretical simulation of the instrument by comparing the responses against observati ...

Whittaker, Ian; Rodger, Craig; Clilverd, Mark; Sauvaud, \;

YEAR: 2014     DOI: 10.1002/2014JA020021

DEMETER; energetic electron flux; geometric factor; POES; Radiation belts


Comparison between POES energetic electron precipitation observations and riometer absorptions: Implications for determining true precipitation fluxes

Energetic electron precipitation (EEP) impacts the chemistry of the middle atmosphere with growing evidence of coupling to surface temperatures at high latitudes. To better understand this link, it is essential to have realistic observations to properly characterize precipitation and which can be incorporated into chemistry-climate models. The Polar-orbiting Operational Environmental Satellite (POES) detectors measure precipitating particles but only integral fluxes and only in a fraction of the bounce loss cone. Ground-base ...

Rodger, Craig; Kavanagh, Andrew; Clilverd, Mark; Marple, Steve;

YEAR: 2013     DOI: 10.1002/2013JA019439

electron precipitation; POES; Radiation belts; riometery