Specification of Nighttime Ionospheric Irregularities: Occurrence, Spatial, and Dynamic Properties

Abstract

The primary objective of this program is to develop algorithms to automatically classify images of the nighttime ionosphere and the structure that occurs therein. We will use these algorithms, as well as hand-verified classifications, to construct climatologies of these structures in the Pacific and South American sectors using a multi-year database. The climatologies will allow for a more complete understanding of when and where these irregularities occur and their effects on trans-ionospheric radio wave propagation. From the classified images, we will study the spatio-dynamical properties of the structures in the images and how they relate to disturbances in trans-ionospheric radio wave propagation. A secondary objective is to conduct a ground campaign in New Mexico to study the linkage between lightning, gravity waves in the mesosphere, and the occurrence of mid-latitude structure in the ionosphere. This will provide valuable insights into the linkage of different atmospheric regions and the upward coupling of energy which is believed to have a significant impact on the ionosphere.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA531110

Entities

People

  • Jonathan J. Makela

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Algorithms
  • Biological Phenomena
  • Classification
  • Climatology
  • Computer Architecture
  • Data Sets
  • Gravity Waves
  • High Resolution
  • Illinois
  • Ionosphere
  • New Mexico
  • Parallel Computing
  • Radio Waves
  • Specifications
  • Standards
  • Wave Propagation
  • Waves

Fields of Study

  • Environmental science

Readers

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