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Total column ozone (TCO) is estimated every hour using GOES Sounder data. The ozone retrieval is generated by application of a regression technique as described in Li et al 2007. Estimates are currently limited to cloud-free regions of the GOES-E (12) & -W (11) Sounder sectors. Each image is a Derived Product Image (DPI), wherein an 8-bit brightness value representing TCO is assigned within the retrieval program for each cloud-free Field-of-View (FOV). Band-8 (11.0um) is used for the DPI image background. Total column ozone is measured in Dobson Units (100 DU = 1 mm of thickness at Standard Temperature and Pressure (STP)). Features such as upper level low pressure systems and frontal boundaries can often be identified in the TCO imagery.
Li, J., C. C. Schmidt, J. P. Nelson, T. J. Schmit, and W. P. Menzel, 2001: Estimation of total atmospheric ozone from GOES sounder radiances with high temporal resolution, Journal of Atmospheric and Oceanic Technology, 18, 157-168.
Li, J., J. Li, C. C. Schmidt, J. P. Nelson III, and T. J. Schmit, 2007: High temporal resolution GOES sounder single field of view ozone improvements, Geophys. Res. Lett., 34, L01804, doi:10.1029/2006GL028172.