Publications

12937 to 12948 of 13842 results

1. Seasonal periodicity of physical and edaphic factors, microalgae and their associated sugars and polyols in Antarctic fellfield soils

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2. Model of the energization of outer-zone electrons by whistler-mode chorus during the October 9, 1990 geomagnetic storm

   [1] Relativistic (> 1 MeV) ‘killer electrons’ are frequently generated in the Earth’s inner magnetosphere during the recovery phase of a typical magnetic storm. We test the hypothesis that the […]

   Read more of: Model of the energization of outer-zone electrons by whistler-mode chorus during the October 9, 1990 geomagnetic storm

3. Additional stratospheric NOx production by relativistic electron precipitation during the 2004 spring NOx descent event

   We analyze in detail the February 2004 Global Ozone Monitoring by Occultation of Stars (GOMOS) NO2 observations in the northern polar latitudes during the springtime descent of NOx from the […]

   Read more of: Additional stratospheric NOx production by relativistic electron precipitation during the 2004 spring NOx descent event

4. Atmospheric impact of the Carrington event solar protons

   The Carrington event of August/September 1859 was the most significant solar proton event (SPE) of the last 450 years, about four times larger than the solar proton fluence of the […]

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5. Energetic electron precipitation during substorm injection events: high-latitude fluxes and an unexpected midlatitude signature

   Geosynchronous Los Alamos National Laboratory (LANL-97A) satellite particle data, riometer data, and radio wave data recorded at high geomagnetic latitudes in the region south of Australia and New Zealand are […]

   Read more of: Energetic electron precipitation during substorm injection events: high-latitude fluxes and an unexpected midlatitude signature

6. Observations of relativistic electron precipitation from the radiation belts driven by EMIC waves

   For some time theoretical modeling has shown that electromagnetic ion cyclotron (EMIC) waves should play an important role in the loss of relativistic electrons from the radiation belts, through precipitation […]

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7. Radiation belt electron precipitation by man-made VLF transmissions

   Enhancements of drift-loss cone fluxes in the inner radiation belt have been observed to coincide with the geographic location of the powerful VLF transmitter NWC. In this paper we expand […]

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8. Significance of transient luminous events to neutral chemistry: experimental measurements

   For many years it has been suggested that transient luminous events (TLE) occurring over thunderstorms may produce significant modifications to neutral atmospheric chemistry. Some have speculated that large ionisation increases […]

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9. The effects of hard-spectra solar proton events on the middle atmosphere

   The stratospheric and mesospheric impacts of the solar proton events of January 2005 are studied here using ion and neutral chemistry modeling and subionospheric radio wave propagation observations and modeling. […]

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10. Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006

    We report GOMOS nighttime observations of middle atmosphere NO2 and O-3 profiles during eight recent polar winters in the Arctic and Antarctic. The NO2 measurements are used to study the […]

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11. Energetic particle precipitation into the middle atmosphere triggered by a coronal mass ejection

    Precipitation of relativistic electrons into the atmosphere has been suggested as the primary loss mechanism for radiation belt electrons during large geomagnetic storms. Here we investigate the geographical spread of […]

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12. Latitudinal extent of the January 2005 solar proton event in the Northern Hemisphere from satellite observations of hydroxyl

    We utilise hydroxyl observations from the MLS/Aura satellite instrument to study the latitudinal extent of particle forcing in the northern polar region during the January 2005 solar proton event. MLS […]

    Read more of: Latitudinal extent of the January 2005 solar proton event in the Northern Hemisphere from satellite observations of hydroxyl