ESA Ozone Climate Change Initiative (Ozone CCI): AURA/OMI Level 3 Tropospheric Tropical Ozone 2004-2014 V2.0
The data is calculated on a convective cloud differential (CCD) algorithm and averaged whereby only the position of the central coordinate is considered.
The tropospheric column can then be calculated by the difference between the stratospheric column and the total column. The stratospheric column being estimated as above the high reaching convective clouds (cloud cover >0.8 and >8km in height). To reduce the error above the clouds from up draught of tropospheric pollution a clean reference region 70°E to 170°W representitive of the latitude band.
For the Total column only cloud free observations are considered (<10%). This method assumes the stratospheric ozone is constant throughout each month and for one latitude band limit the CCD algorithm to the tropics (20°S to 20°N).
The Ozone Monitoring Instrument (OMI) is a nadir viewing imaging spectrograph that measures
the solar radiation backscattered by the Earth's atmosphere and surface over the entire
wavelength range from 270 to 500 nm with a spectral resolution of about 0.5 nm. OMI was
launched on-board the NASA satellite AURA in July 2004. In comparison to the GOME and
SCIAMACHY sensors, OMI is characterized by a larger swath width of 2600 km, which enables
measurements with a daily global coverage at all latitudes. The nominal OMI pixel size of 13 ×
6 Product Specification Document
Issue: 4.6 – Date of issue: 3/11/2015
Reference: Ozone_cci_ PSD_4.6
Page 8 of 45
24 km2 at nadir is also significantly smaller. The small pixel size enables OMI to look in between
the clouds, which is important for retrieving tropospheric information. The light entering the
telescope is also depolarised using a scrambler, which avoids polarization-related artefacts. OMI data are
available since 2004 and the instrument is still operational, however in 2007 OMI started to
experience the so-called row anomaly which reduces the amount of useful measurements, despite
correction algorithms being implemented in the level-1 processing chain. In the project, the OMI
instrument is used for ozone profile retrievals. OMI total ozone data are also used for
intercomparison and validation with total ozone data products developed from the GOME,
SCIAMACHY and GOME-2 sensors
2020-12-02 Please note that newer versions of this dataset exist and are in the process of being added to the archive. For more informat… Show More 2020-12-02 Please note that newer versions of this dataset exist and are in the process of being added to the archive. For more information please see: https://climate.esa.int/en/projects/ozone/data/ Show Less
|Previously used record identifiers:||
No related previous identifiers.
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://licences.ceda.ac.uk/image/data_access_condition/esacci_ozone_terms_and_conditions.pdf. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data were processed by the ESA CCI Ozone project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project
|Ozone Monitoring instrument (OMI)||Deployed on: EOS-AURA|
Mobile platform operations
|Mobile Platform Operation 1||Mobile Platform Operation for: EOS-AURA|