The EnKF ensemble mean soil analysis increment is needed for the GFSv17 soil moisture and soil temperature analysis.
It will be re-gridded, and added to the deterministic member.
It's simplest to write it out from the GSI, since the increment will be masked according to the presence of snow on the ground (and we use the mean snow state), rather than calculating it after the fact.
The EnKF ensemble mean soil analysis increment is needed for the GFSv17 soil moisture and soil temperature analysis. It will be re-gridded, and added to the deterministic member. It's simplest to write it out from the GSI, since the increment will be masked according to the presence of snow on the ground (and we use the mean snow state), rather than calculating it after the fact.