name: epsl-cover-letter
description: Use when writing the cover letter and editor-facing metadata for an Earth and Planetary Science Letters (EPSL) submission. EPSL is run by a team of subject editors who screen for frontier significance and letters fit, so the letter must land the process-level advance, steer to the right editor, and supply clean suggested reviewers. It drafts the letter; it does not contact editors.
Cover Letter & Editor Pitch (epsl-cover-letter)
EPSL manuscripts are handled by an editor whose own research sits near the paper's sub-field —
geochemistry, geophysics, geodynamics, planetary science (the current editor roster changes;
re-check it on the journal site). Your letter is read by a scientist who can evaluate the claim
directly, so it must be a precise scientific argument for significance, not marketing. Its three
jobs: state the frontier advance, demonstrate letters fit, and make the editor's reviewer search easy.
When to trigger
- Writing the cover letter for a new EPSL submission
- Choosing the editor whose remit matches the paper (where the system allows a preference)
- Assembling suggested and opposed reviewers with conflict statements
- Re-pitching after a desk decline at another high-bar venue
What the letter must do
- Open with the advance, quantified. Two or three sentences: the process question, what your
result establishes, and the number that carries it — written for a scientist-editor, without
superlatives.
- Argue portability explicitly. One sentence on why readers beyond the study region or method
community need the result; this is the desk-screen axis regional studies fail.
- Show letters fit. Confirm one decisive result, main text within the cap, no companion
manuscript in play.
- Flag the cross-disciplinary reviewer pairing. If the paper joins two sub-fields, say so and
suggest reviewers from each — it tells the editor you understand how EPSL will referee it.
- State integrity basics. Original work, not under consideration elsewhere, all authors approve,
preprint status if any, data deposited (name the repositories), competing interests declared.
- Suggest clean reviewers. Several qualified names with no recent co-authorship, shared
institution, or advising ties; opposed reviewers named soberly with a one-line reason if needed.
The subject editor's silent questions
| Editor asks silently | Weak letter | Letter that survives |
|---|
| Is this a frontier advance? | "we present new data from X" | "this is the first measurement that separates hypothesis A from B, at ±… precision" |
| Will non-specialists care? | portability unstated | "any interpretation of [archive/process] must now correct for…" |
| Is it a Letter? | length/scope unmentioned | "a single result, 5,900-word main text" |
| Can I referee it fairly? | reviewer list from one clique | reviewers spanning both sub-fields, conflicts stated |
| Are the data real and open? | silence | "full tables at EarthChem (DOI), code at Zenodo (DOI)" |
Worked micro-example (illustrative — pitching the detrital-lag paper)
- Weak hook (desk-decline risk): "We report 600 new detrital-zircon U-Pb ages from the X Basin
together with bedrock thermochronology, and discuss the provenance of the basin fill." An editor
files this under regional provenance.
- Strong hook: "We provide the first direct measurement of the lag between mountain exhumation
and its appearance in the sedimentary record — 5.0 ± 1.2 Myr (illustrative) — by dating both ends
of one sediment-routing system. Detrital archives are read worldwide as if this lag were zero; our
result makes that reading correctable." Process, number, portability — in three sentences.
The conversion move is always the same: replace what was measured where with what everyone else
must now do differently.
Anti-patterns
- A letter that inventories the dataset but never states what it decides
- "Novel," "unprecedented," "paradigm" doing the work that a number should do
- Ignoring the regional-study objection when the title contains a place name
- Suggesting only reviewers from the authors' collaboration network
- Omitting data-deposition, preprint, or competing-interest statements
- A letter longer than a page
Output format
【Hook】advance + number + portability in ≤3 sentences
【Letters fit】one result + within cap + no companion paper
【Editor】subject remit matched (re-check current roster)
【Reviewers】suggested (both sub-fields) + conflicts stated; opposed if any
【Integrity】originality / authors / preprint / data DOIs / COI
【Length】one page? [Y/N]
【Next】epsl-review-process
Supplementary resources