Density profile results from the Endurance Sounding Rocket Mission

The Endurance sounding rocket launched into open field lines through the polar cap on May 11th 2022 from Ny Alesund, Norway. The main science goal of the Endurance mission is to make the first direct in-situ measurement of the Earth’s ambipolar electric field which is a key driver of the polar wind along open field lines that transports ions to higher altitudes. Two ionization gauge instruments were included on the payload to obtain a high-fidelity density profile which will be used as an input to the Polar Wind Outflow Model to produce a high resolution simulation of the ambipolar electric field. The density and temperature profiles measured by the ionization gauge instruments will be presented in the context of the Endurance mission and the MSIS model will be compared to the in situ measurements.