Status July 31
Several validation runs have started, and results are only just becoming available.
For 2004, two experiments have begun, one starting in January 2004, and the other starting in July 2004. These will run forward through 6 months to provide a full year of analysis. So far, the first months (January and July) have recently completed, and results for those months should be available soon.
January 2006 was run, completed, and evaluations begun. However, between the time it was started, and its evaluation, it was determined that the initialization of the satellite bias corrections was a problem. A new experiment has begun and should be ready for evaluation soon. This will also serve as a test on our bias initialization procedures, which need to be done each time a new satellite becomes available.
The problems with initialization of the satellite bias corrections became apparent in evaluating the SSMI experiment, discussed in the July 10 status update. The NOAA 10 data began using a bias correction that was determined from a previous experiment, with different physics, and hence, different biases. Large parts of the SSMI experiment are being re-run, including some half degree experiments and data withholding experiments. In addition, new coefficients for the historical NOAA radiances are available. Presently, these are being tested. It is worthwhile to mention that the science in the system has been frozen, and these tests are more related to the input data for the 1980s.
File Spec: Thanks to those who have taken time to look at the document! Reviews and intercomparisons of the doc with the output data have identified some inconsistencies. The developers are well into resolving the discrepancies. A new file spec document should be posted soon.
The initial conditions and input data for spin up runs for the MERRA production streams are being developed. When operations personnel get some time, these will be started so as to not lose time while we validate. This expects a favorable result from the validation of the system. The spin-up and steams for MERRA production will be posted separately.
AMS abstracts are due August 10, and the WCRP reanalysis conference abstracts are due today. There will be several GMAO presentations at each of these on MERRA validation.
For 2004, two experiments have begun, one starting in January 2004, and the other starting in July 2004. These will run forward through 6 months to provide a full year of analysis. So far, the first months (January and July) have recently completed, and results for those months should be available soon.
January 2006 was run, completed, and evaluations begun. However, between the time it was started, and its evaluation, it was determined that the initialization of the satellite bias corrections was a problem. A new experiment has begun and should be ready for evaluation soon. This will also serve as a test on our bias initialization procedures, which need to be done each time a new satellite becomes available.
The problems with initialization of the satellite bias corrections became apparent in evaluating the SSMI experiment, discussed in the July 10 status update. The NOAA 10 data began using a bias correction that was determined from a previous experiment, with different physics, and hence, different biases. Large parts of the SSMI experiment are being re-run, including some half degree experiments and data withholding experiments. In addition, new coefficients for the historical NOAA radiances are available. Presently, these are being tested. It is worthwhile to mention that the science in the system has been frozen, and these tests are more related to the input data for the 1980s.
File Spec: Thanks to those who have taken time to look at the document! Reviews and intercomparisons of the doc with the output data have identified some inconsistencies. The developers are well into resolving the discrepancies. A new file spec document should be posted soon.
The initial conditions and input data for spin up runs for the MERRA production streams are being developed. When operations personnel get some time, these will be started so as to not lose time while we validate. This expects a favorable result from the validation of the system. The spin-up and steams for MERRA production will be posted separately.
AMS abstracts are due August 10, and the WCRP reanalysis conference abstracts are due today. There will be several GMAO presentations at each of these on MERRA validation.
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