GSFC TOMS CCD L3 5x5deg Monthly Tropospheric Column Ozone V1 (TrCO3_Monthly_TOMS)

The GSFC TOMS CCD L3 5x5deg Monthly Tropospheric Column Ozone product (TrCO3_Monthly_TOMS) contains tropospheric column ozone amounts averaged by month from 1979 to 2005. Total column measurements are obtained from the Total Ozone Monitoring Sensor (TOMS) on the Nimbus-7 (1979-1993) and the Earth Probe (1996-2005) satellites. Tropospheric column ozone (TCO) is determined using the convective-cloud differential (CCD) method and is limited to the tropical region. In this method stratospheric column ozone (SCO) is estimated from the TOMS ozone observations over high altitude deep convective clouds and then subtracted from TOMS total column ozone.

The data are stored in an ASCII text file. Data are averaged monthly at 5 degree x 5 degree resolution between -30 degrees and +30 degrees. The single data file size is 2.5 MB.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 15, 2026, 03:09 (UTC)
Created June 3, 2026, 02:02 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 14a849c5-4f6e-4fc5-af6b-0e0a4f2d536c
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/EMKKL1BZF4IN
license https://www.usa.gov/government-works
modified 2026-09-07T22:16:02Z
programCode {026:000}
publisher NASA/GSFC/SED/ESD/TISL/GESDISC
resource-type Dataset
source_datajson_identifier true
source_hash aefa0617052167e3a21593937753549bf8900d607a4bf7cf73bdde13e273b7e4
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180, "NorthBoundingCoordinate": 90, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -90}]]
temporal 1979-01-01/2005-12-31
theme {"Earth Science"}