Comparisons of the Data-Driven D Region (D3R) Model to Incoherent Scatter Radar Observations During the Active Solar Conditions of September 2017

The physics-based Data-Driven D Region (D3R) model calculates electron density profiles from 36 km to 134 km for quiet time and disturbed conditions. We compare D3R E and D region electron density profiles and high-frequency absorption predictions against available ISR observations during the active solar period of September 2017. Data from the Millstone Hill, Tromsø EISCAT, and Svalbard EISCAT ISRs provide electron density profiles during September 2017.