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TitreSpace weather bulletin - 2011
AuteurFiori, R A D; Lam, H -L; Trichtchenko, L; McKee, L; Danskin, D; Nikolic, L
SourceCommission géologique du Canada, Dossier public 7197, 2012, 282 pages,
ÉditeurRessources naturelles Canada
Documentdossier public
Mediaen ligne; numérique
Référence reliéeCette publication est reliée à les publications suivantes
Sujetstélédétection; perturbations magnétiques; champ magnétique; interprétations magnétiques; orages magnétiques; énergie solaire; variations solaires; géophysique
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
LiensSpace Weather Canada / Météo Spatiale Canada
Diffusé2012 09 25
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 magnetometers distributed throughout Canada.
The Space Weather Bulletin is generated by the Canadian Space Weather Forecast Centre and provides recipients with daily descriptions of current space weather conditions, including solar, interplanetary, near-Earth environment and geomagnetic conditions, and forecasts of future activity. 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 near-Earth environment, the observed and predicted (forecast for the next 24 hours) values of the electron fluence at geostationary orbit with respect to threshold levels are provided. 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 from its implementation April 06, 2011 until December 31, 2011. Sections 2 and 3 provide an introduction and description of the evolution of the bulletin. A listing of typical bulletin statements is provided in Section 4. Section 5 contains tables of values used to select descriptive statements (very low / low / moderate / high / very high). Beginning July 06, 2011 a glossary of terms was included in the bulletin. This glossary is presented in Section 6. Sample bulletins are presented in Section 7.