Tomographic retrievals of ozone with the OMPS Limb Profiler: algorithm description and preliminary results

Daniel J. Zawada, Landon A. Rieger, Adam E. Bourassa, Douglas A. Degenstein
2017 Atmospheric Measurement Techniques Discussions  
Measurements of limb scattered sunlight from the Ozone Mapping and Profiler Suite Limb Profiler (OMPS-LP) can be used to obtain vertical profiles of ozone in the stratosphere. In this paper we describe a two-dimensional, or tomographic, retrieval algorithm for OMPS-LP where variations are retrieved simultaneously in altitude and the along orbital track dimension. The algorithm has been applied to measurements from the center slit for the full OMPS-LP mission to create the publicly available
more » ... licly available USask OMPS-LP 2D v1.0.2 dataset. Tropical ozone anomalies are compared with measurements from the Microwave Limb Sounder (MLS) where differences are less than 5 % of the mean ozone value for the majority of the stratosphere. Examples of near coincident measurements with MLS are also shown, and agreement at the 5 % level is observed for the majority of the stratosphere. Both simulated retrievals and coincident comparisons with MLS are shown at the edge of the polar vortex, comparing the results to a traditional one-dimensional retrieval. The one-dimensional retrieval is shown to consistently overestimate the amount of ozone in areas of large horizontal gradients relative to both MLS and the two-dimensional retrieval.
doi:10.5194/amt-2017-236 fatcat:3sfazw4zefaonaiolnw4gg4amq