Status Feb 1

The three streams are ready to start. The first has run from Jan 1 1979 to Jan 9. However, all are on hold while system maintenance is being done (in other words, the computers are down).

By Monday, I'll be back from the 3rd International Conference on Reanalyses in Tokyo Japan, with better information. It has been a very interesting meeting, with status updates from the 20th Century reanalysis project and the NCEP CFS Reanalysis and Reforecast project (see the ppt at the CFS Site). Stay tuned to these interesting activities too!

Status Jan 28

The three spinup runs reported earlier have completed 1 year of spin up. These have provided the starting points for the MERRA production. The output diagnostics have been updated to correct minor diagnostic bugs, and when the system is rebuilt, production will begin.

I'm monitoring status from the 3rd WCRP International Conference on Reanalysis, and will this page when new information is available.

Status Jan 19

A data flag was out of place, and Stream 1 had to be backed up. All are still moving forward to the end of the December of their respective spin up phases.

Stream 1 date completed: 19781202

Stream 2 date completed: 19881124

Stream 3 date completed: 19971124

The at the end of December of each stream, the system will be rebuilt one last time.
While checking the output data, several minor bugs were found in the output, but nothing that changes the physics. A few other bugs have also been found, which may be non-zero in the physics. These are present being address, but none are considered to be significant changes to the results or validation of the system.

Generally, when the system is running 10 days of reanalysis are produced every day, from each stream. This may not add up with extrapolations from recent posts, because of computer downtime, or backing up the system.

Status Jan 12

The Spin Up periods are still being processed.

• Stream 1 RUNNING at 11/01/78
• Stream 2 RUNNING at 09/26/88
• Stream 3 RUNNING at 09/27/97

A group of GMAO folks have begun a final check of consistency between the output data files and the file specification document. The group will report back next Thursday.

Status Jan 4

Over the holidays, the last few science fixes went into the system, and the spinup periods resumed. Each of the three MERRA processing streams is presently running, with the data to be discarded for spinup.

• Stream 1 RUNNING at 08/31/78
• Stream 2 RUNNING at 07/30/88
• Stream 3 RUNNING at 07/30/97

As a reminder, the planned start day for each stream is Jan 1, 1979, 1989 and 1998 respectively. They are moving at approximately 10 days per day, when the computer systems are up. They will hold at the end of each November, so that the last patch of the system (engineering fixes to the output diags, scripting and post processing that do not affect science) can be put into place. At that time, the GMAO will also make an evaluation of the output diagnostics, to ensure that the data and units all match the file spec document.

There is a known issue already becoming apparent. The CRTM coefficients for NOAA 8 AMSUA channel 14 have some problems. This data doesn't begin until May 1983, so there is time to correct the problem without affecting the MERRA production schedule. Further updates as the run get closer will be provided.

Happy New Year!