MERRA2 Data Lessons for next REANL: Difference between revisions

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* The Cheng-Zhi Zou recalibrated radiances show AMSU-A NOAA-17 data available from 28 Jun - 15 Jul 2002. The satinfo is set up to not assimilate data to 15 Jul, and I'm not sure when the N17 data shows up in our L1A files. Whether we go forward with recalibrated radiances or not, it may be worth attempting to recover this 2-3 weeks of data if it is stable. See data start date in Zou and Wang (2011)

* GOES-15 Sounder has short periods with large O-F standard deviation in fall and spring near the equinox. We should check to see whether the issue is significant enough to set the instrument (or certain channels) to passive during these periods in the satinfo for future historical/reanalysis experiments.

* GOES-15 Sounder has short periods with large O-F standard deviation in fall and spring near the equinox. We should check to see whether the issue is significant enough to set the instrument (or certain channels) to passive during these periods in the satinfo for future historical/reanalysis experiments. It also has problems with differences in bias values in a few channels at different times of day, not well characterized by the current radiance bias correction.

* 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.

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 * The Cheng-Zhi Zou recalibrated radiances show AMSU-A NOAA-17 data available from 28 Jun - 15 Jul 2002.  The satinfo is set up to not assimilate data to 15 Jul, and I'm not sure when the N17 data shows up in our L1A files.  Whether we go forward with recalibrated radiances or not, it may be worth attempting to recover this 2-3 weeks of data if it is stable.  See data start date in Zou and Wang (2011)
-* GOES-15 Sounder has short periods with large O-F standard deviation in fall and spring near the equinox.  We should check to see whether the issue is significant enough to set the instrument (or certain channels) to passive during these periods in the satinfo for future historical/reanalysis experiments.
+* GOES-15 Sounder has short periods with large O-F standard deviation in fall and spring near the equinox.  We should check to see whether the issue is significant enough to set the instrument (or certain channels) to passive during these periods in the satinfo for future historical/reanalysis experiments.  It also has problems with differences in bias values in a few channels at different times of day, not well characterized by the current radiance bias correction.
 * 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.