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Total Ozone Mapping Spectrometer (TOMS) Ozone, Aerosol, UV and Reflectivity Data and Images from Earth Probe-TOMS (EP-TOMS)

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Abstract: The Earth Probe-Total Ozone Mapping Spectrometer (EP-TOMS) spacecraft
was launched on July 2, 1996 from a Pegasus rocket. The launch of
EP-TOMS continues the global measurements of ozone that began with the
TOMS instrument on Nimbus-7 and Meteor-3 (1978-1994).

The EP-TOMS data consists of ozone data in Dobson Units, refelctivity,
erythermal ultraviolet (UV) radiation, and aerosol index. EP-TOMS data
is available from:

and consists of north pole, south pole, and daily global 3-map
composites as well as ASCII data.

EP-TOMS ozone data is obtained 3 or 4 times per day and is processed to
ASCII data (in Dobson units).

Nimbus-7, Meteor-3, and ADEOS TOMS data are also available from:
Related URL
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: Richard D. McPeters
Dataset Title: EP-TOMS Data and Images
Dataset Release Place: Greenbelt, MD
Dataset Publisher: NASA/GSFC
Online Resource:
Temporal Coverage
Start Date: 1996-08-01
Data Resolution
Latitude Resolution: 1.00 deg
Longitude Resolution: 1.25 deg
Quality The data and images on this site are preliminary and have not been
fully validated.
Access Constraints None.
Use Constraints The data and images are preliminary and not fully validated.
Data Set Progress
Originating Center
Data Center
Atmospheric Chemistry and Dynamics Branch, Laboratory for Atmospheres, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL:

Data Center Personnel
Phone: 301-614-6038
Fax: 301-614-5903
Email: richard.d.mcpeters at
Contact Address:
Goddard Space Flight Center
Mailstop 613.3
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Distribution Media: on-line, ftp
Distribution Format: ASCII, GIF images
Fees: none
An assessment of the accuracy of 14.5 years of Nimbus 7 TOMS version 7
ozone data by comparison with the Dobson network, R.D. McPeters and
G.J. Labow, Geophys. Res. Lett., 23, 3695-3698, 1996.
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Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2017-08-24