TROPOMI Level 2 Ozone (O3) Profile in NRT - Sentinel-5P
Description
The O3 profile product provides vertical information of the ozone concentrations in three different ways:
• As a number density profile at 33 pressure levels;
• As 6 sub-columns with a vertical sampling of 6 km up to an altitude of 24 km and lower sampling above;
• As the total column and tropospheric column.
The UV Earth radiance spectra contain approximately 6 independent pieces of information on the vertical profile of ozone. The retrieval is based on optimal estimation, which combines the information from the measured spectra with a priori information. In addition to the profile information listed above, the O3 profile product contains additional information on the retrieval result, including the noise and smoothing errors, the error covariance matrix and the averaging kernel. Advanced users are encouraged to use the averaging kernel when comparing to or combining the ozone profile with other data sets.
The O3 profile data product is derived from the TROPOMI Band 1 and 2. The spatial sampling is 28 × 28 km2 in nadir and contains 77 pixels in the across flight direction. This sampling is achieved by combining ground pixel on-ground.
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