ROSES ID: NRA-00-OSS-01 Selection Year: 2001
Program Element: Independent Investigation: LWS
Principal Investigator: Charles Farrugia
Affiliation(s): University of New Hampshire
Summary:A viable space weather tool must provide both timely and reliable predictions of major geomagnetic disturbances. Solar wind monitors positioned judiciously in orbit around the Sun at say ~0.5 AU are in principle capable of giving an advance warning of ~1.5-2.5 days of disruptive interplanetary configurations. However, it is crucial to ensure that the advantage of early warning be coupled with a knowledge of how these structures develop en route to 1 AU so as to be able to understand what properties these structures have when they reach Earth. Aside from a well-grounded knowledge of how the magnetosheath and the coupled magnetosphere-ionosphere system respond to various interplanetary triggers, an informed assessment presupposes improved further knowledge of the following: (a) correlation lengths (of both field and plasma) along the Sun-Earth line; (b) correlation lengths normal to the Sun-Earth line; (c) how interplanetary quantities known to correlate well with geomagnetic activity develop from 0.5 to 1 AU; (d) how (a) - (c) depend on the specific interplanetary configuration; and (e) on the system's history, i.e., whether the structures are transient or corotating; and (f) the number of monitors required to keep correlation values above a pre-assigned, able tolerance level.
|Performance Year||Reference||Investigation Type||Actions|
|1||Jordanova, V. K.; Kistler, L. M.; Farrugia, C. J.; ...||not set|
|1||Lepping, R. P.; Farrugia, C. J.; Jordanova, V. K.; ...|