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The main pillar: Assessment of space weather observational asset performance supporting nowcasting, forecasting, and research to operations

Space weather forecasting critically depends upon availability of timely and reliable observational data. It is therefore particularly important to understand how existing and newly planned observational assets perform during periods of severe space weather. Extreme space weather creates challenging conditions under which instrumentation and spacecraft may be impeded or in which parameters reach values that are outside the nominal observational range. This paper analyzes existing and upcoming observational capabilities for f ...

Posner, A.; Hesse, M.; St. Cyr, O.;

YEAR: 2014     DOI: 10.1002/swe.v12.410.1002/2013SW001007

Assessment; Space Hardware; SWx Forecasting; Van Allen Probes


Substorm electron injections: Geosynchronous observations and test particle simulations

We investigate electron acceleration and the flux increases associated with energetic electron injections on the basis of geosynchronous observations and test-electron orbits in the dynamic fields of a three-dimensional MHD simulation of neutral line formation and dipolarization in the magnetotail. This complements an earlier investigation of test protons [Birn et al., 1997b]. In the present paper we consider equatorial orbits only, using the gyrocenter drift approximation. It turns out that this approximation is valid for e ...

Birn, J.; Thomsen, M.; Borovsky, J.; Reeves, G.; McComas, D.; Belian, R.; Hesse, M.;

YEAR: 1998     DOI: 10.1029/97JA02635

Substorm Injections