Heliospheric Non Radial Plasma and Field Transport Determined from Solar Surface Fields and IPS Constrained 3 D MHD.
Abstract
One of the most sought after heliospheric parameters is the vector (three component) magnetic field. At Earth, a southward interplanetary magnetic field component in Geocentric Solar Magnetospheric (GSM) coordinates (Bz negative) can couple with the Earth’s magnetic field at the boundary of the magnetosphere causing geomagnetic storms. At the University of California, San Diego (UCSD) we have developed a way using IPS tomography techniques to accurately predict magnetic fields using Current–Sheet Source Surface (CSSS) modeling. We use our technique in real time to forecast GSM Bz several days in advance, and now propose to extend this effort to higher resolutions in a variety of ways. The process we have developed allows an insertion of all three short term vector field components from the solar surface and can give an indication of the fields associated with CMEs, especially at their onset. 1) Here we will extend this study and provide a trace of these fields from near the solar surface to a source surface to provide inputs both for the extant UCSD kinematic tomographic model and 3 D MHD models. 2) We will also explore the propagation of these fields from their onsets near the solar surface to Earth to determine the timing and non radial transport of their components. 3) We will augment this model with our iterative ENLIL kernel that better refines shocks, and includes non radial transport caused by interactions and magnetic field effects in the inner heliosphere. 4) Finally, we will use the lines traced by these earlier studies to refine the mapping of Solar Energetic Particles (SEPs) from solar flaring sites, and heliospheric shocks to better characterize their heliospheric distributions and spectra. As our analyses become available, we intend for their use in real time by the AFOSR, at the CCMC, at other world locations, and on our UCSD website http:--ips.ucsd.edu-.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501910356
Entities
People
- B. V. Jackson
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of California, San Diego