Remote sensing space weather events: Antarctic-Arctic radiation-belt (Dynamic) Deposition-VLF Atmospheric Research Konsortium network
 The Antarctic-Arctic Radiation-belt (Dynamic) Deposition-VLF Atmospheric Research Konsortium(AARDDVARK) provides a network of continuous long-range observations of the lower ionosphere in thepolar regions. Our ultimate aim is to develop the network of sensors to detect changes in ionizationlevels from 30–90 km altitude, globally, continuously, and with high time resolution, with the goal ofincreasing the understanding of energy coupling between the Earth’s atmosphere, the Sun, and space. Thisscience area impacts our knowledge of space weather processes, global atmospheric change,communications, and navigation. The joint New Zealand-United Kingdom AARDDVARK is a newextension of a well-established experimental technique, allowing long-range probing of ionization changesat comparatively low altitudes. Most other instruments which can probe the same altitudes are limitedto essentially overhead measurements. At this stage AARDDVARK is essentially unique, as similar systemsare only deployed at a regional level. The AARDDVARK network has contributed to the scientificunderstanding of a growing list of space weather science topics including solar proton events, the descentof NOx into the middle atmosphere, substorms, precipitation of energetic electrons by plasmaspherichiss and electromagnetic ion cyclotron waves, the impact of coronal mass ejections upon the radiationbelts, and relativistic electron microbursts. Future additions to the receiver network will increase thescience potential and provide global coverage of space weather event signatures.