The ultimate goal of this research is the development of an operational algorithm for retrieving daytime ionospheric hmF2 from the measurement of the O II 83.4 nm emission feature. This algorithm will provide data for ingestion into ionospheric models. The reward of a successful algorithm is very high, as no capability presently exists to measure the global variation of hmF2 within the F-region of the ionosphere during the day. Further, this work will provide a new assessment of the state of the ionosphere during significant space weather events, which is critical to the use of GPS and other operational systems that rely on the propagation of radio waves within the near-Earth space environment. In addition, this research could lead to a method for global monitoring of the ionosphere and its response to solar, geomagnetic and lower atmospheric waves and tides.