MERRA2 Data Lessons for next REANL: Difference between revisions
No edit summary |
No edit summary |
||
| Line 32: | Line 32: | ||
* AQUA-AMSUA recalibrated data have stable data available from May 24th 2002. However, the files seem to be stable from the end of August 2002. | * AQUA-AMSUA recalibrated data have stable data available from May 24th 2002. However, the files seem to be stable from the end of August 2002. | ||
* Ricardo said something at a recent GSI meeting about time-dependent rawinsonde observation errors. Another approach (maybe more appropriate) would be observation errors dependent on rawinsonde instrument type - providing a time-varying error with a physical basis. X. Su at NCEP investigated this and had a Trak ticket #628 with some results of an investigation. This could be extended further for the historic instrument types for reanalysis. Certainly other data types such as the satellite winds (original or reprocessed) should be considered for some kind of time-dependent observation errors. | |||
* Another ticket in NCEP Trak involves aircraft data thinning which may be something they are implementing. Any instance of thinning should also be considered with respect to the time-varying aspects of observation spacing. | |||