First Study on the Feasibility for an Operational Treatment of Temperature and Pressure Retrievals from the 118.75 GHz Oxygen Band Measured by the Odin Statellite Using the Optimal Estimation Method.

摘要

This paper presents the retrieval of temperature and pressure profiles from the 118.75 GHz oxygen line. This study is performed using simulated limb-sounding measurements in the frame of the sub millimeter instrument (SMR) that will be carried by the Odin satellite. The temperature and pressure is determined from the output of a 3 channel filter bank. It is shown that the temperature can be retrieved from 20 to 60 km with a vertical resolution of 5 km and an error of 2%, due to nonlinearity effects and a priori pressure uncertainty. The upper limit of 60 km is due to neglect of modeling the Zeeman splitting lines.