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TitreGuide to the Space Weather Bulletin
AuteurFiori, R A D
SourceCommission géologique du Canada, Dossier public 7422, 2014, 67 pages, (Accès ouvert)
LiensSpace Weather Canada / Météo Spatiale Canada
ÉditeurRessources naturelles Canada
Documentdossier public
Mediaen ligne; numérique
Sujetstélédétection; perturbations magnétiques; champ magnétique; interprétations magnétiques; orages magnétiques; énergie solaire; variations solaires; géophysique; Santé et sécurité
Illustrationstables; location maps
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
ProgrammeService d'information sur les dangers naturels au Canada, Service d'information sur les dangers naturels au Canada
Diffusé2014 04 17
Résumé(Sommaire disponible en anglais seulement)
Space weather refers to the conditions and processes occurring in space which have the potential to affect the near Earth environment. Space weather processes can include changes in the interplanetary magnetic field, coronal mass ejections from the Sun, and disturbances in Earth's magnetic field. The effects of space weather include (but are not limited to) geomagnetically induced currents in power systems and pipelines, azimuthal errors in directional drilling, disruptions to high frequency radio communication and GPS navigation, and failure or misoperation of satellites. The Canadian Space Weather Forecast Centre monitors, analyzes, and forecasts space weather and dispatches warnings and alerts across Canada. This includes tracking solar disturbances from the Sun to the Earth and monitoring the Earth's magnetic field on the ground using a network of magnetic observatories distributed throughout Canada. The Space Weather Bulletin is generated by the Canadian Space Weather Forecast Centre and provides recipients with a daily description of current space weather conditions. The bulletin begins with a summary of the most important observations followed by a description of the current geomagnetic activity levels and a 24 hour forecast of the future geomagnetic activity levels. Current conditions and forecasted conditions are provided individually for the polar cap, auroral, and sub-auroral zones in Canada. Potential impacts to power systems, HF radio, geostationary satellites, aeromagnetic surveys, and directional drilling operations are provided for each zone based on the level of geomagnetic activity. In addition to this summary, detailed information about solar conditions, interplanetary conditions, and the geostationary satellite environment are provided. Descriptions of solar conditions include the observation of coronal mass ejections, coronal holes, active regions, and solar flares. Where possible, the time at which effects are expected to be observed at the Earth are provided. Interplanetary conditions refer to the solar wind speed, and the magnitude and polarity of the north / south (perpendicular to the ecliptic plane) component of the interplanetary magnetic field. In the geostationary satellite environment, the observed and predicted values of the electron fluence at geostationary orbit with respect to threshold levels are provided for the previous and following day. Geomagnetic activity levels for the past and future 24 hours in the polar cap, auroral, and sub-auroral zones are also provided. All descriptions are based on data products and links available at This report provides a description of the Space Weather Bulletin and documents the bulletin in 2012. Section 2 provides an introduction and description of the bulletin. A listing of typical bulletin statements is provided in Section 3 for the three versions of the bulletin issued in 2012. Section 4 lists possible impacts associated with varying levels of space weather activity, and Section 5 contains tables of values used to select descriptive statements (very low / low /moderate / high / very high) used in the bulletin. A glossary of terms is included in Section 6. Section 7 provides a summary of space weather activity for 2012 that will be useful for examining bulletins provided in Section 8.
Résumé(Résumé en langage clair et simple, non publié)
La météo spatiale fait référence aux conditions dynamiques du soleil et de l¿environnement spatial qui peuvent influer sur les infrastructures essentielles. RNCan exploite le Centre canadien de météo spatiale et étudie les effets de la météo spatiale sur les systèmes d¿alimentation électrique, les pipelines, les satellites, les installations de communications radio et le FGISM pour aider l¿industrie canadienne à comprendre et à atténuer les effets de la météo spatiale. Le Laboratoire Géomagnétique du Canada prépare un bulletin quotidien de la météo spatiale résumant les conditions récentes, actuelles et prévues, et les impacts possibles sur la technologie. Ce document est un guide pour le bulletin quotidien de la météo spatiale.