Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Modify to assimilate radar reflectivity and conventional data simultaneously without side effects in EnVar #540

Closed
shoyokota opened this issue Feb 21, 2023 · 0 comments · Fixed by #543
Closed

Modify to assimilate radar reflectivity and conventional data simultaneously without side effects in EnVar #540

shoyokota opened this issue Feb 21, 2023 · 0 comments · Fixed by #543

Comments

@shoyokota
Copy link
Collaborator

In #504, direct assimilation of radar reflectivity was introduced. This reflectivity assimilation has forced pure EnVar because current static background error (B) is not extended for radar reflectivity. However, radar reflectivity actually can be assimilated even without static B. Here, this restriction forcing pure EnVar is removed.

In addition, vertical wind (w) should be added in a state vector in this radar reflectivity assimilation. But when w is added, w is also used in the observation operator of radar radial wind. Here, to prevent this side effect, an option if_use_w_vr is added.

  • if_use_w_vr: if false, vertical wind (w) is not used in the observation operator of radar radial wind even w is included in a state vector (default: .true.)
shoyokota pushed a commit to shoyokota/GSI that referenced this issue Feb 21, 2023
GitHub Issue NOAA-EMC#540 Modify to assimilate radar reflectivity and…
7bc3317 
… conventional data simultaneously without side effects in EnVar
@shoyokota shoyokota mentioned this issue Feb 21, 2023
Merged
shoyokota pushed a commit to shoyokota/GSI that referenced this issue Apr 17, 2023
GitHub Issue NOAA-EMC#540 Modify to assimilate radar reflectivity and…
7407ff0 
… conventional data simultaneously without side effects in EnVar
shoyokota pushed a commit to shoyokota/GSI that referenced this issue Apr 17, 2023
GitHub Issue NOAA-EMC#540 Modify to assimilate radar reflectivity and…
d66e1d2 
… conventional data simultaneously without side effects in EnVar
shoyokota pushed a commit to shoyokota/GSI that referenced this issue May 19, 2023
GitHub Issue NOAA-EMC#540 Modify to assimilate radar reflectivity and…
688c3d2 
… conventional data simultaneously without side effects in EnVar
shoyokota pushed a commit to shoyokota/GSI that referenced this issue May 31, 2023
GitHub Issue NOAA-EMC#540 Modify to assimilate radar reflectivity and…
f60263d 
… conventional data simultaneously without side effects in EnVar
ShunLiu-NOAA pushed a commit that referenced this issue Jun 1, 2023
@shoyokota
GitHub Issue #540 Modify to assimilate radar reflectivity and convent…
d766977 
…ional data simultaneously without side effects in EnVar (#543)

This PR removes forcing pure EnVar and adding an option (if_use_w_vr) to
assimilate radar reflectivity and conventional data simultaneously
without side effects in EnVar
(#540). Regression tests for
global 3dvar/4denvar/4dvar are not completed yet, but for other tests,
issues are not found except for "failed the scalability test" and
"exceeded maximum allowable hardware memory limit" on Orion.

Fixes #540

Co-authored-by: Sho Yokota <syokota@Orion-login-1.HPC.MsState.Edu>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
1 participant
@shoyokota