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Flare Irradiance Spectral Model (FISM): Daily component algorithms and results
Chamberlin, Phillip C.; Woods, Thomas N.; Eparvier, Francis G.
The solar photon output from the Sun was once thought to be constant but is now known to vary considerably over timescales from seconds during solar flares to years due to the solar cycle. This is especially true in the wavelengths shorter than 208 nm (Al ionization edge), where measurements and models of the solar irradiance at these short wavele…
Up to 1-hour forecasting of radiation hazards from solar energetic ion events with relativistic electrons
Posner, Arik
The sudden and prompt occurrence of solar energetic particle events poses a hazard to manned space activities and interferes with robotic space science missions. This study demonstrates the possibility of short-term forecasting of the appearance and intensity of solar ion events by means of relativistic, near-light speed electrons. A list of the m…
Sun-to-thermosphere simulation of the 28-30 October 2003 storm with the Space Weather Modeling Framework
Roussev, Ilia I.; Sokolov, Igor V.; Gombosi, Tamas I. +4 more
In late October and early November 2003 a series of some of the most powerful solar eruptions ever registered shook the heliosphere. These "Halloween storms" damaged 28 satellites, knocking two out of commission, diverted airplane routes, and caused power failures in Sweden, among other problems. This paper presents a 4-day end-to-end simulation o…
Space weather and deep space communications
Woo, Richard
While Pioneer 11 and Galileo are two deep space missions that experienced radio communication disruptions due to space weather, the success of a mission like Solar Probe, whose goal is to fly by the Sun within a few solar radii of its surface, may depend critically on space weather. It is therefore crucial to thoroughly understand how space weathe…
Statistical study of low-energy heliosphere particle fluxes from 1.4 to 5 AU over a solar cycle
Lanzerotti, L. J.; Armstrong, T. P.; Maclennan, C. G. +4 more
Throughout the entire Ulysses mission, the Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low Energies (HI-SCALE) has collected measurements of low-energy interplanetary ions and electrons. Time series of electron, proton, and ion fluxes have been obtained since 1990. We present statistical studies of high-resolution ion and el…