Conveners
(DASP) T2-2 Space Weather, Space Instrumentation, and Operations | Météo spatiale, instrumentation spatiale et opérations (DPAE)
- Daniel Billett (University of Saskatchewan)
Natural Resources Canada (NRCan) operates several over-the-horizon (OTH) High Frequency (HF) radio links across Canada. From 2013-2019, a dedicated link between a transmitter in Ottawa to a receiver in Alert was operated nearly continuously at 6 different HF frequencies from 5 to 14 MHz. For an OTH propagation link to exist between Ottawa and Alert at a given frequency, two criteria must be...
The high-latitude ionosphere is a dynamic and hostile environment for communication and navigation systems due to its high occurrence rate of instabilities of variable temporal and spatial scales. Small-scale ionospheric irregularities can cause rapid and random fluctuations in the phase and amplitude of Global Navigation Satellite System (GNSS) signals, leading to a phenomenon referred to as...
The RADiation Impacts on Climate and Atmospheric Loss Satellite (RADICALS) mission will explore the precipitation of high energy electrons and protons from the Van Allen belts into the thermosphere and mesosphere. These high energy electrons and protons are believed to have important impacts on the generation of NOx and HOx free radicals in these regions leading to the catalytic destruction...
The measurement of electron densities in the ionosphere is notorious difficult. In situ measurements are typically made using Langmuir probe characteristics from which densities and temperatures are inferred using a variety of analytic models. These include but not limited to the Orbital Motion Limited (OML) introduced a century ago by Tonks and Langmuir (Physical review 34.6 (1929): 876), and...
The Borealis radar system developed by SuperDARN Canada at the University of Saskatchewan has enabled new operating modes for SuperDARN radars. Two new operating regimes have been used by SuperDARN Canada: simultaneous sensing of the full field-of-view (FOV), and multistatic sensing. Full FOV illumination increases the temporal resolution sixteen-fold, while multistatic sensing probes novel...
The RADiation Impacts on Climate and Atmospheric Loss Satellite (RADICALS) mission, scheduled for launch in 2027, is a Canadian small satellite mission designed to investigate the impacts of energetic particle precipitation on Earth’s atmosphere. Energetic particle precipitation (EPP) plays a critical role in altering atmospheric chemistry, particularly through the production of NOx and HOx,...
