A joint product by: KNMI, BIRA-IASB, University of Bremen, MPI-C, and Wageningen University
The QA4ECV NO₂ Essential Climate Variable precursor product contains harmonized vertical NO₂ columns for the period 1995-2017. The dataset contains three products: (1) the tropospheric vertical column density, (2) the stratospheric vertical column density, and (3) the total vertical column density. The NO₂ ECV precursor data will provide geophysical information for each and every ground pixel observed by GOME, SCIAMACHY, OMI, and GOME-2(A), without the additional binning, averaging or gridding typically applied for Level 3 data. In addition to vertical NO₂ columns, the product contains intermediate results, such as the result of the spectral fit, fitting diagnostics, the averaging kernel, cloud information, and algorithm and product error estimates.