Yannick opened the meeting announcing that due to the recent interruptions of the Thursday schedules (code sprints, JEDI release, Academy) we will catch up on current activity by doing a general roundtable update. Next week is another Academy so we will not hold this meeting. We will start up again in two weeks and get back on the regular schedule (of alternating roundtables and special topic discussions) with a presentation by Wojciech on developing JEDI in his IDE (Integrated Development Environment, such as Visual C++ or Xcode).
JEDI1 (Infrastructure)
Mark M gave the following summary.
Chris S asked for the timeline for EWOK since NCAR is interested in this tool. The bottom line estimate is first quarter of AOP 2021 (Apr-Jun, 2021). The current status of EWOK is that a prototype version is running forecasts on Orion using the FV3 model. EWOK currently uses ECFLOW and other flow platforms such as CYLC are in the works. EWOK is undergoing a lot of development activity now, and the documentation is incomplete. EWOK is checked into github (https://github.com/JCSDA-internal/ewok) so it is available for perusal, but the advice is to wait a couple weeks (for the activity to quiet down a bit) before diving in and studying it. Yannick added that EWOK will be presented in January during a Thursday special topics discussion.
JEDI2 (Observations)
Ryan gave the following summary.
JEDI3 (Models)
Dan noted that there was no JEDI3 meeting since he last reported due to the recent release and academy work. He added that the JEDI3 team has been providing support for the OBS project team, along with getting caught up with reviewing model related pull requests.
JEDI4 (DA Methodology)
Anna presented the following summary.
JEDI5 (Support, Training)
Yannick reported that the first ever virtual Academy, two weeks ago, was successful. Next week will be the second virtual Academy with the UKMO and USAF. Yannick added that the recent code sprints, JEDI release and academies have interfered with the core team's "pace" (speed of reviews, code development, etc.) and things should return to normal after next week's academy is completed.
Updates from the Group
At this point the updates from the core team on the JEDI AOP categories was finished and the floor was opened up to updates or questions from the group.
JJ asked about being able to pass QC results from one outer loop to the next output loop. Essentially once a location is filtered out, it gets marked as a missing value and cannot be added back into the assimilation downstream (in a subsequent outer loop). A use case that JJ mentioned is to not assimilate cloudy locations in the first outer loop, but rather introduce those in subsequent outer loops. Some discussion ensued and it was noted that the inability to pass QC results from one outer loop to the next was intentional. Operational centers have determined that it's not worth the computing resources to restore observations back into the assimilation once they are rejected. However, JJ's use case may be useful for research purposes so this topic warrants further discussion.
Mark M announced that work is underway to get our JEDI containers running on NASA's Pleiades supercomputing system, for both single-node and multi-node workflows. Anyone interested in testing this should contact Mark.
Yannick closed the meeting at this point since there were no more updates or questions. We will not meet next Thursday (12/10/20) due to the Academy, so next meeting is in two weeks (12/17/20) where we will hear from Wojciech on developing JEDI in his IDE.