OFFLINE TROPICAL TROPOSPHERIC OZONE COLUMN
Example image
NOTE: Metop-A+B image is for demonstrational purposes only, such multi-satellite product is not processed or disseminated.
Description: Tropical tropospheric ozone column product provides information about vertical column densities of ozone in the troposphere below 10 km.
Type: Level 3. The product is available monthly with a delay of several months.
Theoretical basis: The retrieval of the product is based on GOME-2 vertical column product and the cloud product.
Processing: DLR generates tropospheric ozone produts based on the CCD method. The tropospheric column is retrieved by subtracting the stratospheric ozone column from the total column for cloud free observations. The stratospheric ozone column is estimated as the column above high reaching convective clouds.
Units and spatial resolution: Ozone columns are given in Dobson Units (DU). The longitudinal resolution is 2.5° and the latitudinal resolution is 1.25°. The data are limited to the range between 20°S and 20°N.
Validation: This product is validated by the KMI and IRM. The validation is based on detailed comparisons of existing satellite data with ozone soundings at several tropical stations. Refer to the O3M SAF offline tropospheric ozone column validation report for further information.
Online quality monitoring: The product quality is constantly monitored by DLR.
Archiving and dissemination: This product is archived at the DLR and available via offline data access page. Upon request, products can be directly pushed to dedicated FTP servers located at the users' premises.
File format: The product is delivered in netCDF4 format, each file containing one month of tropospheric ozone data in the range of 20°S to 20°N.
Algorithm version information:
| Satellite | Time period | Algorithm version | CCD algorithm version |
|---|---|---|---|
| Metop-A | 01/2007 - 12/2014 | GDP 4.8 | 1.0 |
| Metop-B | 01/2013 - 12/2014 | GDP 4.8 | 1.0 |
Documents: