Assimilative Modeling of Substorm-Initiated Traveling Ionospheric Disturbances

Abstract

In this program, a data assimilation system was created for the NRL-developed ionosphere model SAMI3 (SAMI3 is Another Model of the Ionosphere). The aim was to enable SAMI3 to more accurately simulate traveling ionospheric disturbances (TIDs), wave-like disturbances that propagate through the Earths ionosphere. The system assimilates total electron content (TEC) observations into an ensemble of SAMI3 simulations using an ensemble Kalman filter (enKF). The effort also led to the creation of LightDA, a general-purpose data assimilation framework which has been released as an open source project.

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Document Details

Document Type
Technical Report
Publication Date
Nov 14, 2022
Accession Number
AD1185188

Entities

People

  • John D. Haiducek

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Assimilation
  • Electron Density
  • Electrons
  • Filters
  • Grids
  • Ionosphere
  • Ionospheric Disturbances
  • Ionospheric Models
  • Kalman Filters
  • Latitude
  • Line Of Sight
  • Longitude
  • Magnetic Fields
  • Measurement
  • Physics
  • Simulations

Fields of Study

  • Environmental science

Readers

  • Allergy and Immunology.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Space/Atmospheric Physics.

Technology Areas

  • Microelectronics