Dependence of Ionospheric Flows on Solar Wind Mach Number

The Sun emits the solar wind, which carries a part of the Sun's magnetic field into interplanetary space. As this interplanetary magnetic field (IMF) travels to Earth, it interacts with Earth's magnetic field. In this study, we are looking for events that have a steady southward component of the IMF. We separate the events into two categories, high mach and low mach numbers. Mach number corresponds to the density. High mach numbers relate to high density and low mach numbers to low density. Then we look at corresponding ionospheric flows measured by Defense Meteorological Satellite Program (DMSP). We will determine if there are any dependence between ionospheric flows on the solar wind mach number. We will present any differences found between the ionospheric flows under these conditions.