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Title: Specification of the near-Earth space environment with SHIELDS

Here, predicting variations in the near-Earth space environment that can lead to spacecraft damage and failure is one example of “space weather” and a big space physics challenge. A project recently funded through the Los Alamos National Laboratory (LANL) Directed Research and Development (LDRD) program aims at developing a new capability to understand, model, and predict Space Hazards Induced near Earth by Large Dynamic Storms, the SHIELDS framework. The project goals are to understand the dynamics of the surface charging environment (SCE), the hot (keV) electrons representing the source and seed populations for the radiation belts, on both macro- and micro-scale. Important physics questions related to particle injection and acceleration associated with magnetospheric storms and substorms, as well as plasma waves, are investigated. These challenging problems are addressed using a team of world-class experts in the fields of space science and computational plasma physics, and state-of-the-art models and computational facilities. A full two-way coupling of physics-based models across multiple scales, including a global MHD (BATS-R-US) embedding a particle-in-cell (iPIC3D) and an inner magnetosphere (RAM-SCB) codes, is achieved. New data assimilation techniques employing in situ satellite data are developed; these provide an order of magnitude improvement in the accuracy in themore » simulation of the SCE. SHIELDS also includes a post-processing tool designed to calculate the surface charging for specific spacecraft geometry using the Curvilinear Particle-In-Cell (CPIC) code that can be used for reanalysis of satellite failures or for satellite design.« less
Authors:
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Beihang Univ., Beijing (China)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
  4. KTH Royal Institute of Technology, Stockholm (Sweden)
  5. Air Force Research Lab., Kirtland AFB, NM (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Space Science Institute, Boulder, CO (United States)
  7. Space Science Institute, Boulder, CO (United States); New Mexico Consortium, Los Alamos, NM (United States)
  8. British Antarctic Survey, England (United Kingdom)
Publication Date:
Report Number(s):
LA-UR-17-23782
Journal ID: ISSN 1364-6826; TRN: US1800222
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Atmospheric and Solar-Terrestrial Physics
Additional Journal Information:
Journal Name: Journal of Atmospheric and Solar-Terrestrial Physics; Journal ID: ISSN 1364-6826
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; Heliospheric and Magnetospheric Physics; Geomagnetic storms and substorms; Multiscale physics; Wave-particle interactions; Space hazards; Numerical modeling
OSTI Identifier:
1411353