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Severe Space Weather Events–Understanding Societal and Economic Impacts A Workshop Report: Extended Summary (2009) / Chapter Skim
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SPACE WEATHER INFRASTRUCTURE
Pages 17-21

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From page 17...
... The SWPC draws on a variety of data sources, both space- and ground-based, to provide forecasts, watches, warnings, alerts, and summaries as well as operational space weather products to civilian and commercial users. Its primary sources of information about solar activity, upstream solar wind conditions, and the geospace environment are NASA's Advanced Composition Explorer (ACE)
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From page 18...
... Although NASA's role is scientific rather than operational, NASA science missions such as ACE provide critical space weather information, and NASA's Living with a Star program targets research and technologies that are relevant to operations. NASA-developed products that are candidates for eventual transfer from research to operations include physics-based space weather models that can be transitioned into operational tools for forecasting and situational awareness and sensor technology.
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From page 19...
... Positioned 1.5 million kilometers upstream from Earth, ACE provides a critical ~45 minutes of advanced warning before a CME strikes Earth. Recognizing the importance of an upstream monitor, Congress mandated in the 2008 NASA Authorization Act that the Office of Science and Technology Policy "develop a plan for sustaining space-based measurements of solar wind from the L-1 Lagrangian point in space and for the dissemination of the data for operational purposes." The plan is to be developed in consultation "with NASA, NOAA, and other Federal agencies, and with industry." Although the SWPC does not classify SOHO as a primary data source, it relies heavily on SOHO coronographic observations to predict the properties and trajectories of CMEs responsible for large geomagnetic storms.
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From page 20...
... – global and regional Geomagnetic storm probabilities Geomagnetic storms – global and regional Geomagnetic activity – global and regional Ionospheric disturbances (TEC, Ionospheric disturbances – global and Ionospheric disturbance probabilities irregularities, HF propagation) – global and regional regional Solar irradiance flux levels (EUV and 10.7 Solar irradiance (EUV and f10.7)
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From page 21...
... Models currently in use at the SWPC include the U.S. Total Electron Content model, which estimates the delays in GPS signals due to the changes in the electron content of the ionospheric path between the GPS satellite and the receiver, and the Wang-Sheeley-Arge model, which predicts solar wind speed and the polarity of the interplanetary magnetic field at Earth.
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Key Terms

  • solar wind
  • ionospheric disturbances
  • weather prediction
  • prediction center
  • weather infrastructure

  • solar energetic
  • geomagnetic storm
  • energetic particle
  • geomagnetic storms
  • weather models

  • wind monitor
  • storm probabilities
  • particle probabilities
  • energetic particles
  • weather data

  • weather effort
  • ionospheric disturbance
  • ionospheric environment
  • geomagnetic activity
  • wind model

  • disturbance probabilities
  • satellite operations
  • image courtesy
  • example mission
  • radiation environment

  • electron content
  • interplanetary magnetic
  • magnetic field
  • coronal mass
  • critical space


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
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