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Fixing Speckling Issues in MR #1607

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merged 2 commits into from
Sep 24, 2024
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yyoon4
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@yyoon4 yyoon4 commented Sep 19, 2024

Description

Implemented an additional sampling strategy for ensemble restart generation to address speckling issues in MR.

  • Temporary Solution: Utilize only the non-perturbed member from the RST file to mitigate the issue.

Resolves #1606

'ldt.config'
Ensemble restart generation sampling strategy: "557ww" # option: none, random sampling, 557ww
Picture1

Testcase

LDT
/discover/nobackup/yyoon4/lis7/Testcase/speckling/ldt/ldt.config.global.noah39.ensemble
LIS
/discover/nobackup/yyoon4/lis7/Testcase/speckling/lis/lis.config.global.noah39.hymap.galwem

1. Code changed to use the last (unperturbed) ensemble member, rather
than hardwiring to 12.
2. Renamed option to "unperturbed sampling".
3. Updated documentation.

Output restart files still match the samples provided by Yeosang Yoon.
I still need to test run with LIS, but I do not anticipate a problem.
@emkemp
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emkemp commented Sep 24, 2024

Successfully reproduced provided LDT and LIS test cases (after renaming "557ww" option to "unperturbed sampling", and adjusting the LIS batch job script for better resource usage -- also, LIS 7.6 was used to produce the test LIS results).

I am satisfied with this code, and will accept the pull request.

@emkemp emkemp merged commit f746fe6 into NASA-LIS:support/lisf-557ww-7.5 Sep 24, 2024
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3 participants