Conveners
(DASP) W1-2 Space Weather Special Session | Session spéciale sur la météorologie spatiale (DPAE)
- Hannah Parry (University of Alberta)
- David Themens (University of New Brunswick)
The high latitude ionospheric evolution of the May 10-11, 2024, geomagnetic storm is investigated in terms of Total Electron Content (TEC) and contextualized with Incoherent Scatter Radar and ionosonde observations. Substantial plasma lifting is observed within the initial Storm Enhanced Density (SED) plume with ionospheric peak heights increasing by 150km to 300km periodically until sunset,...
For the past three decades, ionospheric drift velocity measurements from the Super Dual Auroral Radar Network (SuperDARN) have been combined at a nominal time resolution of two minutes to produce horizontal patterns of the high-latitude convective flow. Recently, SuperDARN radars operated by the University of Saskatchewan (codenamed Borealis), which overlook much of the northern hemisphere...
Severe geomagnetic disturbances (GMDs) caused by intense solar storms can induce geomagnetically induced currents (GICs) in the Earth and within long conductive infrastructure, possibly posing significant risks to electricity transmission systems. Though no outages or damages were documented, transformer neutral-to-ground current measurements, provided by AltaLink L.P., recorded GICs exceeding...
A polar cap patch is defined operationally as an enhancement in plasma density within the high-latitude F-region of the ionosphere, having spatial scale of the order of 100 km and featuring a density that exceeds twice that of the surrounding ionosphere. The occurrence of patches at high latitudes is important for two main reasons. First, they arise from complex interactions in the...
The SuperDARN Canada team will be releasing the first full version of the Borealis digital radar system software this year. This presentation will outline the newly developed advanced capabilities of the Borealis system and the new experimental modes now available to the SuperDARN Canada radars.
Space Weather Ionospheric Network Canada (SWINCan), formerly the Canadian High Arctic Ionospheric Network (CHAIN), has provided continuous, near-real-time monitoring of the high-latitude ionosphere since 2007. SWINCan is operated by the Radio and Space Physics Laboratory (RSPL) at the University of New Brunswick (UNB). The network currently consists of 10 high-frequency (HF) ionosondes, 30...
Ionospheric absorption degrades high frequency radio wave propagation following solar events that enhance either photoionization or energetic particle precipitation. The high-latitude region poleward of 50° magnetic latitude is particularly vulnerable because of the frequency and widespread effects of auroral and polar cap absorption events. Shortwave fadeout, auroral absorption and polar...
