Dawn-Dusk Asymmetries in Geospace
Friday, 19 December 2014: 1:40 PM
During the last decades, increasing availability of satellite and ground based measurements has made it possible to study these phenomena in more detail. Numerous publications have documented the existence of persistent asymmetries in processes, properties and topology of plasma structures in various regions of geospace. In this paper, we present a review of our present knowledge of some of the most pronounced dawn-dusk asymmetries. We focus on four key aspects: 1) the role of external inﬂuences such as the solar wind and its interaction with the Earth’s magnetosphere; 2) properties of the magnetosphere itself; 3) the role of the ionosphere and 4) feedback and coupling between regions. We have also identiﬁed potential inconsistencies and gaps in our understanding of dawn-dusk asymmetries in the Earth’s magnetosphere and ionosphere.