Status June 14

Just a brief update, as our regular meeting was relatively brief and focused.

Progress has been made on the sawtooth problem. The results presented today show that rejecting all AMSUA radiance over land snow conditions eliminates the sawtooth. There are some experiments ongoing to test which channels (surface peak and high peak) might be included without the instigating a sawtooth. Also, there is an experiment with all AMSUA, but with much stricter quality control. We should have the results from those experiments in a couple working days. However, the fallback position would be to not use AMSUA over snow.

During these tests, some other minor bugs and updates to the system have been found and fixed. An experiment pulling the system all together is being configured and run over the weekend. That should be evaluated next week along with the AMSUA quality checks. If all goes as expected there, validation experiments will begin soon thereafter.

The 2 degree SSMI experiment is ongoing, and producing a month every 14 hours or so. Presently it is at 16 February 1988. While we're monitoring some of the data as it progresses, some analysis of SSMI impact will be done when we have 1 year after SSMI starts (probably try to get 2 years after, eventually).