Defense meteorological satellite measurements of total ozone

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Abstract
A multichannel filter radiometer (MFR) on Defense Meteorological Satellites (DMS) that measured total ozone on a global‐scale from March 1977 ‐ February 1980 is described. The total ozone data measured by the MFR were compared with total ozone data taken by surfaced‐based Dobson spectrophotometers. When comparisons were made for five months, the Dobson spectrophotometer measured 2‐5% more total ozone than the MFR. Comparisons between the Dobson spectrophotometer and the MFR showed a reduced RMS difference as the comparisons were made at closer proximity. A Northern Hemisphere total ozone distribution obtained from MFR data is presented.