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@jjokella jjokella commented Nov 13, 2025

Summary

This PR implements GRACE Data Assimilation support for eCLM-PDAF by adding infrastructure to calculate and track Total Water Storage (TWS) for hydrologically active cells, enabling comparison with GRACE satellite observations.

All changes are under USE_PDAF flag.

Key Changes:

  • TWS calculation for hydrologically active cells (lnd2atmMod.F90)
  • Temporal averaging: Running mean calculation for all TWS components aligned with GRACE observation intervals, controlled by averaging_var and set_averaging_to_zero flags
  • Added _mean and _inc (increment) variants for all water state components (h2osoi_liq, h2osoi_ice, h2osno, h2osfc, h2ocan, wa) to support ensemble analysis
  • Added history file output for total water storage: TWS_hactive

Depends on #84

jjokella and others added 30 commits July 9, 2024 11:29
perturbation of the soil hydraulic parameters

author: Yorck Ewerdwalbesloh
preparation for PR into master
in particular the difference in setting the Brooks-Corey Shape
Parameter
after check from Yorck Ewerdwalbesloh
@AGonzalezNicolas
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@jjokella There is a conflict on this branch. See above.

@jjokella jjokella marked this pull request as ready for review December 2, 2025 12:57
@jjokella jjokella merged commit e1781ed into master Dec 2, 2025
7 checks passed
@jjokella jjokella deleted the dev-grace-da branch December 2, 2025 12:58
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4 participants