bug fix init ugwp

[netosylvio]

Pull Request Description

bug fix init ugwp

(...)

Type of Change

• Bug fix
• Hot fix
• New feature
• Improvement to existing functionality
• Code refactoring
• Code optimization
• Other: ______

Testing and Quality

• Code was written following MONAN’s DTN-01 (Coding Standard)
• Compilation and execution tests of the model were executed
• Test with the debug flag was executed
• Results are reproducible with the default configuration

Scientific Impact

Space for further details of the changes made and the improvements introduced. Cite the articles and references used.

(...)

[netosylvio]

updated with a new patch for correction

[netosylvio]

Bit-for-bit Reproducibility

release/2.0.0-rc (debug_off) vs. feature/bug_fix_init_ugwp (debug_off)

cdo difference = OK
cdo diffv = OK
nccmp = OK
Reproducibility OK
Final result at: Thu, July 30, 2026 23:41:25
Comparison 2026012000 - Model vs. Model
Total identical = 80
Total different = 0

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release/2.0.0-rc (debug_off) vs. feature/bug_fix_init_ugwp (debug_off)

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Statistical Reproducibility

release/2.0.0-rc (debug_off) vs. feature/bug_fix_init_ugwp (debug_ON)

It is accepted in the literature that changes in compilers, optimization, or the order of operations can prevent bit-for-bit reproducibility in atmospheric models. In such cases, numerical or statistical reproducibility is expected, as rounding errors can grow in chaotic systems. [Geyer et al., 2021]

Tests accounted for differences on the order of 1e-2.

Statistical Reproducibility Test
GrADS 2.2.1.oga.1 module loaded
Type 'grads' to start the Grid Analysis and Display System

Test valid for: 2026012000 00Z

==> zonal wind at 100 hPa: OK
==> temperature at 100 hPa: OK
==> specific humidity at 100 hPa: OK
==> geopotential height at 100 hPa: OK
==> rainc: OK
==> lh: OK

Final result: Reproducibility OK

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release/2.0.0-rc (debug_off) vs. feature/bug_fix_init_ugwp (debug_ON)

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Conclusions

Bit-for-bit reproducibility tests – OK
Comparison test in GrADS – OK
Statistical reproducibility test – OK
Variable and area encroachment test – OK

No anomalies were found in the tests comparing release/2.0.0-rc and feature/bug_fix_init_ugwp