Measuring Global Signals in the Potential Gradient at High Latitude Sites

Previous research has shown that the study of global electrical circuit can be relevant to climate change studies, and this done through measurements potential gradient near surface in fair weather conditions. However, highly variable due different local effects (e.g., pollution, convective processes). In order try minimize these effects, performed at remote locations where anthropogenic influences are small. work we present from five stations high latitudes Southern Northern Hemisphere. This is first description new datasets Halley, Antarctica; Sodankyla, Finland. The effect polar cap ionospheric significant some detailed analysis here demonstrates a negligible on Halley Sodankyla. New criteria for determination conditions snow covered sites also reported, demonstrating wind speeds as low 3 m/s loft particles, fetch measurement site an important factor determining threshold speed. Daily seasonal shows great agreement with “universal” Carnegie curve electric circuit, particularly Halley. latitude sites, which magnetic solar present, provide globally representative circuit.