Lambertian Equivalent Reflectivity Data Record (Release 1) - Metop-A

The GOME-2 surface LER data record contains two surface LER versions: one version based on GOME-2 observations by the Main Science Channels (MSCs) and one version based on GOME-2 observations by the Polarisation Measurement Devices (PMDs). The PMD-based version has the advantage over the MSC-based version that the surface LER is based on eight times as many observations, each with an eight times smaller footprint. This makes the retrieved surface LER less susceptible to residual cloud contamination, statistically more stable, and therefore more reliable. It also allows a higher spatial resolution of the end product, the surface LER grid. The user is encouraged to use the new version of the Lambertian Equivalent Reflectivity data record EO:EUM:DAT:METOP:O3M-89-1, which has been released on the 2nd June 2017.