| name | jian-2025-backmapping-high-low-latitude-pfss |
| description | Per-entry paper-skill in wave500_coronal_source_mapping_pfss_045 (HelioSI 501-corpus). See body and metadata.yaml for paper identity and claim boundary. |
| paper | {"authors_verified":false} |
jian-2025-backmapping-high-low-latitude-pfss
Runtime-neutral paper-skill. Layered: (1) scientific invariants, (2) executable protocol against abstract capabilities, (3) adapter notes (optional examples only), (4) research-generation affordances.
Trigger
Reach for this skill when back-mapping high- and low-latitude solar wind under multiple coronal+heliospheric magnetic-field configurations (PFSS, current-sheet, MHD).
Layer 1 — Scientific invariant
Paper identity
- Title: Backmapping of the High- and Low-Latitude Solar Wind Under Multiple Heliospheric and Coronal Magnetic Field Configurations
- First author: TODO_verify
- Authors: TODO_verify
- Year: 2025
- arXiv: 2510.21076 (posted 2025-10-24)
- Journal: TODO_verify_with_full_text
- DOI: TODO_verify_with_full_text
Claim (narrow form)
Backmapping under PFSS vs PFSS+PFCS vs MHD yields systematically different source-region attributions at high latitude where PFSS alone is insufficient — quantified across Ulysses and Solar Orbiter high-latitude passes.
Method assumptions
- Multi-configuration backmapping is consistent at the same R_ss.
- High-latitude coverage allows model discrimination.
Data assumptions
- Ulysses + SolO high-latitude in-situ.
- Synoptic Br across the relevant intervals.
- MHD ambient as available.
Failure modes (skill memory)
- Ulysses-era magnetogram products differ from modern.
- MHD vs PFSS comparison depends on grid.
Figure / numerical targets
- Per-latitude source-region attribution under each config.
- Disagreement map.
Claim boundary
In scope. High-latitude pass intervals.
Out of scope — do NOT generalize:
- Do NOT generalize to low latitudes without separate testing.
Layer 2 — Executable protocol (capability-typed)
Required capabilities (abstract)
| Capability | Purpose | Notes |
|---|
magnetogram.fetch_synoptic_br() | Br | |
pfss.solve() | PFSS | |
pfcs.solve() | current-sheet layer | |
mhd.ambient() | MHD ambient | |
backmap.compare_configs() | back-map comparison | |
Procedure
- Identify high-latitude pass intervals.
- Backmap under each model config.
- Quantify per-latitude disagreement.
Validation target
Reproduce disagreement map.
Layer 3 — Adapter / runtime notes (optional examples)
- sunkit-magex.pfss; PFCS / MHD codes paper-specific.
Layer 4 — Research-generation affordances
- Compose with [[wu-2026-nonspherical-coronal-magnetic-field-open-flux]] — NSPF as a fourth config to compare against.
- Generative hypothesis: disagreement-map structure correlates with effective-multipole degree at high latitude ([[hore-2026-dominant-spatial-scales-coronal-field]]).
Skill graph → depends_on
- [[wu-2026-nonspherical-coronal-magnetic-field-open-flux]]
- [[paper-stansby-2020-pfsspy-python-pfss]]
Links
TODOs for full-text verification
- lead author
- DOI
- Ulysses interval
- MHD model identity