Within the ESA GOME Evolution project, two different total column water vapor (TCWV) products are developed and applied to the satellite instruments GOME, SCIAMACHY, and GOME-2:
1. The "climate" product with focus on consistent time series of monthly means
2. The "advanced AMF algorithm" (A3) product with focus on accurate retrievals for individual pixels.
The GOME Evolution project is funded by European Space Agency (ESA) under contract no. 4000110429