chuanfei-writing

name	chuanfei-writing
description	Evidence-based Chuanfei Dong manuscript-writing and review style distilled from MAVEN switchback draft samples (`reports/chuanfei_pdf_texts/file_21.txt` and `file_22.txt`) using the impersonate-meta methodology plus a Zhipu GLM review pass. Use when drafting, revising, or reviewing Chuanfei/MAVEN switchback manuscripts, especially to enforce diagnostic-first argument structure, event-list discipline, claim-strength calibration, and caption/table style. Scope is manuscript voice only; do not infer biography or personality.
version	0.1.0

Chuanfei Writing Skill

Scope and evidence discipline

This skill is a manuscript-writing/review skill, not a full biographical persona. It was distilled from two local manuscript text samples:

• reports/chuanfei_pdf_texts/file_21.txt
• reports/chuanfei_pdf_texts/file_22.txt

and a Zhipu GLM-5.1 distillation pass saved at:

• reports/chuanfei_skill_distillation_20260529/zhipu_distillation_raw.md
• metadata: reports/chuanfei_skill_distillation_20260529/zhipu_call_meta.json

Do not fabricate anecdotes, spoken style, mentoring style, or private preferences. Every strong style claim below must remain traceable to the local draft samples or be marked [unverified].

Core voice model

Chuanfei's manuscript voice in these drafts is a diagnostics-first observational physicist voice:

1. Start from an observational/radial gap. Establish that PSP/near-Sun switchbacks are known, but confirmed tests near Mars/1--2 au are missing.
2. Define the phenomenon by observables, not by name alone. Magnetic rotations must be quasi-constant-|B|, Alfvénic, low-compressibility, and geometrically coherent.
3. Prove upstream cleanliness before interpretation. MAVEN must be well upstream of bow shock/MPB; otherwise the event may be a planetary-boundary artifact.
4. Use a test-program pipeline. Deflection angle, compressibility, Walén relation/slope/correlation, cross helicity, spherical-polarization arc, MVA geometry, and boundary widths form a diagnostic chain.
5. Lead with the best event. Treat #02272 as the flagship/textbook event; use companion events for consistency, not for geometry if their MVA is weak.
6. Mechanism through signatures. Discuss WKB/expansion vs reconnection/shear through predicted observables: Alfvénicity through kink boundaries, field-aligned elongation, and boundary widths.
7. Conservative final implication. Preserve the diagnostic chain but soften global/first/largest/rule-out claims unless independently verified.

Argument grammar for a Chuanfei-like Letter

Use this order unless there is a strong reason not to:

1. Problem/gap: switchbacks are known near the Sun; survival/diagnostic identity beyond 1 au is under-tested.
2. Instrument/location safeguard: MAVEN MAG/SWIA at Mars orbit; establish pristine upstream solar-wind interval.
3. Selection criteria: state the event-selection threshold and diagnostic requirements before presenting events.
4. Flagship event: describe #02272 in detail: rotation, constant-|B|, unit-circle arc, Walén/cross-helicity behavior, MVA normal, tanh boundary widths.
5. Companion events: present #02050 and any near-threshold companion only as repeatability/consistency checks; avoid overclaiming geometry.
6. Mechanism test: compare diagnostic signatures to expansion/WKB vs local reconnection/shear predictions.
7. Caveat: boundary-local reconnection/kinetic activity is not identical to reconnection-driven formation.
8. Implication: event-level evidence that Alfvénic switchback-like structures can persist to Mars orbit; broader population claims need a survey.

Diagnostic/value rules

• Upstream first: never interpret as heliospheric physics until MAVEN's upstream context is stated.
• Multi-diagnostic naming: do not call something a switchback because of angle alone. Require low compressibility, Alfvénic velocity-field relation, cross-helicity behavior, and polarization geometry where possible.
• Best-event discipline: use #02272 for MVA/boundary geometry if it is the only well-conditioned case. Do not pretend all events support all diagnostics.
• Event-list discipline: do not mix the file_21 event set (#02272, #02050, #02222) with the file_22/v13 event set (#02272, #02050, #01974) without an explicit note.
• #01974 discipline: if using #01974 with θmax=82°, call it a near-threshold Alfvénic companion, not a strict >90° switchback.
• Mechanism calibration: prefer “supports/favors/disfavors” unless the alternatives and literature have been checked; avoid unsupported “rules out”.
• Population calibration: three events can show event-level persistence and motivate a survey; they cannot prove a global radial survival law.

Lexical phrase bank

Prefer phrases like:

• “pristine upstream solar wind”; “well upstream of the bow shock and MPB”
• “quasi-constant-|B| rotation”; “constant-|B| spherical polarization”
• “clean arc on the unit circle”
• “normalized cross helicity remains high through the kink boundaries”
• “field-aligned elongated structure”
• “boundary-local reconnection is distinct from reconnection-driven formation”
• “event-level diagnostic evidence”; “supports/favors an expansion/WKB-consistent interpretation”

Avoid or soften unless independently verified:

• “first confirmed” / “largest heliocentric distance” / “never before”
• “rules out reconnection-driven formation”
• “persist essentially undiminished”
• treating all three events as strict switchbacks if #01974 is included
• vague committee prose that says “important implications” without the diagnostic chain.

Figure/table/caption style

• Captions should be diagnostic and panel-by-panel: say what each panel proves, not merely what it displays.
• Put upstream-location evidence early, ideally before event physics figures.
• Tables must preserve diagnostic provenance: event time, θmax, |B| variability, Walén/cross-helicity metrics, and notes for unavailable or non-threshold values.
• If a table entry is unavailable, say “not listed”/“not available in source” and explain why; do not use odata or ellipses in a review candidate.
• Figure labels must be readable. If source PNG labels are too small, TeX scaling is not a real fix; regenerate figures if possible.

Review checklist for an existing draft

1. Does the abstract run phenomenon → gap → MAVEN/upstream → event sample → diagnostic chain → conservative implication?
2. Does the introduction connect PSP/near-Sun switchbacks to a Mars-orbit survival/mechanism test rather than generic motivation?
3. Are upstream solar-wind/boundary conditions established before interpretation?
4. Is the event list internally consistent?
5. Is #01974 described as near-threshold if θmax=82°?
6. Are mechanism statements tied to observables (cross helicity at boundaries, MVA geometry, boundary widths), not asserted abstractly?
7. Are first/largest/rule-out claims externally verified or softened?
8. Are captions diagnostic and panel-by-panel?
9. Are there any draft artifacts: placeholder authors, internal notes, TODO, CITATION NEEDED, odata, “draft sample”, “working class”, visible line numbers, or typeset/draft slugs?
10. Does the conclusion avoid population-level overreach from three events?

How to use this skill on v13

For the v13 single-column candidate, the likely remaining Chuanfei-style gaps are:

• It may be too committee-polished in places: ensure the diagnostic chain remains explicit rather than replaced by generic significance language.
• Keep the #01974 near-threshold caveat visible enough that readers do not think all three events meet θmax>90°.
• Check every mechanism phrase; soften any “rules out” language unless it is explicitly tied to boundary widths/cross-helicity and literature support.
• Improve figure-source readability if original plotting scripts/data can be accessed; small tick/legend labels are contrary to the caption-as-diagnostic habit.
• Re-check the abstract and conclusion against the grammar above.

Zhipu raw distillation excerpt

The full Zhipu output is saved separately. Key excerpt follows for auditability.

Raw Zhipu distillation

# Chuanfei Dong: Scientific Writing Style Distillation

This document provides an evidence-based distillation of Chuanfei Dong's scientific writing style based on the provided manuscript drafts (`file_21`, `file_22`) and preliminary persona notes. This analysis serves as the foundational specification for the `chuanfei-writing` LingTai skill.

***

## 1. Evidence Inventory

**Sources Used:**
*   `file_21`: Single-column draft titled "First Direct Observations of Magnetic Switchbacks at Mars' Orbit". Likely an earlier or alternative formatting version.
*   `file_22`: Two-column AASTeX draft (Draft version May 26, 2026) with the same title.
*   `EXISTING`: A preliminary memo containing observations on manuscript style, voice, and values.

**Limitations:**
*   **Scope:** Analysis is restricted strictly to the provided manuscript text. No biographical, spoken, or extra-manuscript data is available.
*   **Verification:** Claims regarding "Firsts" (e.g., `file_21:L19`) cannot be verified against external literature within this context but are noted as a stylistic preference for strong framing.
*   **Inconsistencies:** The source files contain internal inconsistencies (specifically regarding the event sample) which are treated as diagnostic "Red Flags" for the skill to catch.

> *"No fabricated anecdotes. If you cannot trace a claim to a source, mark it [unverified]. If you are unsure, do not include it."*

## 2. High-level Voice Model

Chuanfei Dong's writing persona is that of a **Diagnostics-First Observational Physicist**.

1.  **Gap-Closure Framing:** Papers open by defining a specific, unfilled spatial or observational gap before introducing the solution (`file_21:L65-L74`; `file_22:L19-L23`).
2.  **Pipeline Thinking:** Arguments are structured as a sequence of criteria or "test programs" (`file_22:L25-L28`) rather than descriptive narratives.
3.  **Upstream Purity Obsession:** There is a rigorous fixation on proving the observation is "pristine" and free of local contamination before physics is discussed (`file_21:L81-L108`; `file_22:L103-L107`).
4.  **Mechanism via Signatures:** Abstract mechanisms (reconnection vs. expansion) are reduced to falsifiable observables (boundary width, cross-helicity dips) (`file_21:L50-L64`).
5.  **Flagship Discipline:** The argument prioritizes one "textbook" event for deep geometry analysis, while companions serve strictly as consistency checks (`file_21:L111-L188`).
6.  **Quantitative Authority:** Arguments rely on specific thresholds ($90^\circ$, $d_i$, $12-16$) rather than qualitative descriptors (`file_21:L85-L96`).

## 3. Argument Grammar

The logical sequence for this manuscript type (observational discovery/mechanism test) follows a strict order:

1.  **Phenomenon & Open Question:** Define switchbacks and the formation debate (Expansion vs. Reconnection).
    *   *Source:* `file_21:L37-L64` / `file_22:L43-L54`.
2.  **The Observational Gap:** Identify the lack of data beyond 1 AU.
    *   *Source:* `file_21:L65-L74` / `file_22:L19-L23`.
3.  **Upstream Verification:** Prove the spacecraft is in the solar wind (not magnetosheath).
    *   *Source:* `file_21:L81-L108` / `file_22:L103-L107`.
4.  **Criteria Definition:** List specific selection filters ($\theta_{max}$, $C_B$, Walén).
    *   *Source:* `file_21:L85-L96` / `file_22:L85-L92`.
5.  **Flagship Analysis (#02272):** Detailed hodograms, MVA, and boundary fits for the best event.
    *   *Source:* `file_21:L111-L188` / `file_22:L177-L240`.
6.  **Companion Verification:** Confirmation that the sign of $\sigma_c$ obeys sector rules in other events.
    *   *Source:* `file_21:L189-L204` / `file_22:L233-L240`.
7.  **Mechanism Ruling:** Interpretation of results against the predefined formation signatures.
    *   *Source:* `file_21:L206-L219` / `file_22:L211-L234`.

## 4. Diagnostic and Value Rules

1.  **Rule: Establish Purity First.** Before discussing Alfvénicity, explicitly state spacecraft position relative to shock boundaries.
    *   *Evidence:* "For all three events MAVEN was well upstream..." (`file_21:L97-L98`).
2.  **Rule: Strict Thresholds.** Define quantitative cut-offs (e.g., $\theta > 90^\circ$, $C_B < 0.15$) and explicitly mention when events fail.
    *   *Evidence:* "The remaining 62 intervals failed at least one criterion..." (`file_21:L94-L95`).
3.  **Rule: MVA Reliability.** Only trust geometry when $\lambda_M / \lambda_N \gg 1$.
    *   *Evidence:* Restriction of geometry analysis to #02272 because companions have poorly conditioned matrices (`file_21:L154-L179`).
4.  **Rule: Sign Consistency.** Alfvénic waves must obey $\text{sgn}(\sigma_c) = -\text{sgn}(B_{0,R})$.
    *   *Evidence:* Explicit check of this relation for toward/away sectors (`file_21:L200-L204`).

## 5. Lexical Phrase Bank

**Preferred Phrases (High Confidence):**
*   "Pristine upstream solar wind" (`file_21:L22-L23`)
*   "Textbook switchback" (`file_21:L122`)
*   "Clean arc on the unit circle" (`file_21:L137-L144`)
*   "Spherical polarization" (`file_21:L23-L24`)
*   "Field-aligned elongated structure" (`file_21:L154-L161`)
*   "Passes the expansion/WKB diagnostic test program" (`file_22:L211-L221`)
*   "Boundary-local reconnection is not the same as reconnection as a formation mechanism" (`file_21:L216-L219`)

**Phrases to Avoid/Soften (For Revision):**
*   **"Essentially undiminished":** Too strong for 3 events (`file_21:L26-L29`).
*   **"Rule out":** Consider softening to "inconsistent with" or "disfavor" unless proof is absolute (`file_21:L216` vs `file_22:L221`).
*   **"First":** Use only after literature verification (`file_21:L19`).

## 6. Figure/Table/Caption Style Rules

1.  **Proactive Captions:** Captions must state what the figure *proves*, not just what it shows.
    *   *Example:* "...confirming a pristine solar-wind observation" (`file_21:L103-L108`).
2.  **Panel-by-Panel Breakdown:** Captions should describe the diagnostic purpose of specific panels (e.g., "Panel D shows...").
    *   *Example:* `file_21:L442-L459`.
3.  **Visual Proof Language:** Use phrasing like "visually indistinguishable curves indicate near-perfect Alfvénic behaviour" (`file_21:L452-L459`).
4.  **Embedded Theory:** Overplot theoretical predictions (e.g., "small-amplitude Mallet et al. parabola") directly on data hodograms (`file_21:L137-L144`).

## 7. Claim-strength Calibration & Red Flags

### Critical Red Flags (Internal Inconsistencies)

1.  **Event List Mismatch:**
    *   `file_21` uses events: #02272, #02050, **#02222** (`file_21:L95-L96`).
    *   `file_22` uses events: #02272, #02050, **#01974** (`file_22:L91-L93`).
    *   *Action:* A revision must select one consistent list.

2.  **Criteria Violation (#01974 Theta):**
    *   The text defines strict criteria: "deflection angle $\theta_{max} > 90^\circ$" (`file_22:L85-L92`).
    *   Table 1 in `file_22` lists event **#01974** with $\theta_{max} = 82^\circ$ (`file_22:L126-L133`).
    *   *Action:* #01974 fails the stated selection criteria. It must be removed or the criteria changed (and rationale provided). `file_21` replaces it with #02222 ($104^\circ$), which is consistent.

3.  **Population-level Overreach:**
    *   Claiming structures persist "essentially undiminished" based on 3 events is risky (`file_21:L26-L29`).
    *   Claiming to extend support by ">6x" in distance is a distance metric, not a statistical one (`file_22:L34-L37`).

## 8. Reusable SKILL.md Skeleton (LingTai)

```markdown
---
skill_name: chuanfei-writing
version: 1.0
description: >
  Generates and reviews scientific manuscripts regarding observational 
  plasma physics (specifically solar wind switchbacks) in the style of 
  Chuanfei Dong. Enforces diagnostic-first argumentation and strict 
  criteria consistency.
trigger: 
  - "Write a switchback results section"
  - "Check consistency of selection criteria"
  - "Review abstract for claim strength"
---

# Chuanfei Writing Skill

## Operational Checklist
1. **Upstream Check:** Does the text establish the observation is "pristine" before physics?
2. **Criteria Consistency:** Does the event table match the selection text? (Watch for $\theta > 90^\circ$ violations).
3. **Mechanism Language:** Are mechanisms described via observables? (e.g., "$\sigma_c$ drops" instead of "turbulence increases").
4. **Flagship Focus:** Is MVA/Geometry restricted to the best-conditioned event?
5. **Claim Strength:** Are "first" claims verified? Are population claims restricted to "event-level constraints"?

## Style Rules
- Use "diagnostic pipeline" language.
- Cite specific thresholds ($90^\circ$, $C_B < 0.15$).
- Use "test program" framing.

9. Reviewing v13: Likely Mismatches

If a committee rewrites this manuscript (creating a hypothetical v13), they will likely introduce the following style violations which the chuanfei-writing skill should flag:

1. Relaxed Criteria: The committee might include #01974 ($82^\circ$) because it "looks" like a switchback, ignoring the strict $>90^\circ$ rule defined in Methods (file_22:L85-L92).
2. Event List Confusion: The committee might mix the file_21 and file_22 event lists, resulting in a Table 1 that doesn't match the text description.
3. Softening Mechanism Claims: The committee might remove "rule out reconnection-driven formation" (file_21:L26) in favor of vague language like "explores the possibility of formation mechanisms." Chuanfei's style prefers explicit falsification ("inconsistent with...").
4. Missing "Purity" Arguments: The committee might drop the explicit Vignes et al. boundary checks (file_21:L97-L108), assuming the reader trusts the data selection.
5. Overstatement: The committee might allow language like "switchbacks exist everywhere" rather than Chuanfei's preferred "fill the major observational gap... at the orbit of Mars" (file_21:L25-L29).

</details>