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24 Aug 2015: BASCOE assimilates MLS v4.2 since 2015-07-01
Following the upgrade of the level2 data processing software to version 4.2x for AURA MLS observations and the discontinuation of version 3.4x on July 1, 2015, the BASCOE system has been adatped to the new version of the data. According to the quality document for MLS v4.2, the main improvements on the quality of the MLS data is expected for O3, CO, HNO3 and H2O.
However, after a few weeks of operations with the new MLS data, the monitoring of the cost used in the 4Dvar assimilation process does not show significant variations.