MOD Data Set Version 8

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INSTRUMENT SUMMARY

TOMS ALGORITHM & CALIBRATION

SBUV ALGORITHM & CALIBRATION

TOTAL OZONE DERIVED ADJUSTMENTS

PROFILE OZONE DERIVED ADJUSTMENTS

TOMS/SBUV MERGED TOTAL AND PROFILE OZONE DATA SETS

MOD Update through April 2009 Now Available

The MERGED OZONE DATA SETS are monthly-mean zonal and gridded average products constructed by merging individual TOMS/OMI (total ozone) and SBUV/SBUV/2 (total and profile ozone) satellite data sets. An external calibration adjustment has been applied to each satellite data set in an effort to calibrate all the instruments to a common standard. Details of the external calibrations and construction of the final data sets are provided by following the links at the top of the page.

Version 8 Merged Ozone Data Sets
Total Ozone Revision 05
Profile Ozone Revision 01
DATA THROUGH: MAR 2009
LAST MODIFIED: 01 MAY 2009

	5° ZONAL MEAN	5° x 10° GRID MEAN	10° x 30° GRID MEAN
Total Ozone	V8 Zonal Total Ozone	V8 Gridded Total Ozone	V8 Gridded Total Ozone
Revision 1 Profile Ozone Layer Amounts (DU)	V8 Zonal Profile Ozone		V8 Gridded Profile Ozone (not yet available)
Revision 1 Profile Ozone Volume Mixing Ratio (PPMV)	V8 Zonal Profile Ozone		V8 Gridded Profile Ozone (not yet available)
The Revision 01 Profile MOD does not yet include data below 64hPa or above 1.0hPa. Below we include the extended Revision 00 Profile MOD (no adjustments) with data at all levels.
Revision 0 Profile Ozone Layer Amounts (DU)	V8 Zonal Profile Ozone		V8 Gridded Profile Ozone (not yet available)
Revision 0 Profile Ozone Volume Mixing Ratio (PPMV)	V8 Zonal Profile Ozone		V8 Gridded Profile Ozone (not yet available)

* The NOAA-17 data from the beginning of the record have been reprocessed using the best calibration information available through July 2008. Data processed after July 2008 use an extrapolated calibration that does not correct for solar activity variations, which can increase the uncertainty in daily profile data, but is less significant for broadly averaged total ozone data. The MOD data set will be updated as new calibrations become available (~yearly) but changes to total ozone are expected to be small.

New Section Data Set Modifications

Periodic updates will be made as new data become available, adding to and possibly changing ozone values at the end of the data set. Changes to existing data may occur as updates to particular data sets become available, and are averaged with the data previously included in the merged data set. These changes are tracked below.

Last Modification: 1 May 2009

Revision 05 Total Ozone Data Set

Includes reprocessed N16 and N17 SBUV/2 data using latest calibration.
OMI data updated from Collection 2 to Collection 3.
New offsets derived based on revised data sets.
1970-1972 N4 BUV data added with no adjustments. User may wish to apply offset based on Comparisons between BUV and Dobson Measurements.

Revision 01 Profile Ozone Data Set

Includes reprocessed N16 and N17 SBUV/2 data using latest calibration.
New offsets with drift corrections based on SAGE II and MLS comparisons (see Profile Ozone Derived Adjustments).

Revision 00 Profile Ozone Data Set

Includes reprocessed N16 and N17 SBUV/2 data using latest calibration.
Includes filtering for Mt. Pinatubo in the lower to middle stratosphere.
No offsets are applied to the individual data sets.

Modification History (includes Previous Revisions of MOD Data using Version 8 Data
and Final MOD Data Set using Version 7 Data)

For more information on data availability for specific instruments, please see Instrument Documentation.