{
 "schema": "nephos.method.v1",
 "slug": "demartini-wreck-st-christopher-1949",
 "title": "Joseph De Martini, The Wreck of the St. Christopher (1949)",
 "urls": [
  "/studies/demartini-wreck-st-christopher-1949"
 ],
 "written": {
  "summary": "The catalogue year and the depicted event are separate dates. The museum supplies a wreck date of 5 August 1949, but no day or hour for the scene De Martini painted.",
  "items": [
   {
    "quote": "The St. Christopher wrecked at Lobster Cove on the evening of August 5, 1949.",
    "source": "Jennifer Pye, Director, Monhegan Museum of Art & History, email to Vedang Sharma, 13 October 2026",
    "url": "https://nephos-mocha.vercel.app/data/studies/demartini-wreck-st-christopher-1949.json"
   }
  ]
 },
 "records": [
  {
   "name": "NOAA ISD, Portland airport, 999999-14764",
   "detail": "48 hourly reports over two full EST dates, 81.4 km from the Monhegan lighthouse reference. Visibility, wind, temperature and sky coverage; regional context.",
   "url": "https://www.ncei.noaa.gov/pub/data/noaa/1949/999999-14764-1949.gz"
  }
 ],
 "gaps": [
  "No island meteorological log or sea-state record has been recovered for this comparison.",
  "No verified object-specific account of the painted sky or of the painting sessions.",
  "The exact wreck date lacks independent contemporary confirmation here. A secondary gallery history names Squeaker Cove, unlike the museum’s note."
 ],
 "tests": [
  {
   "claim": "What happened to visibility at the airport?",
   "result": "Portland’s six evening reports on 5 August give 16000–19200 m visibility and 1–1.5 m/s wind. These cannot establish conditions at the St. Christopher or date De Martini’s scene."
  },
  {
   "claim": "Does this establish a weather cause or the painter’s accuracy?",
   "result": "No. A regional observation cannot establish visibility at a vessel, wave height at the shore, or what the artist retained or changed."
  }
 ],
 "finding": "Portland’s six evening reports on 5 August give 16000–19200 m visibility and 1–1.5 m/s wind. These cannot establish conditions at the St. Christopher or date De Martini’s scene.",
 "verdicts": [
  {
   "claim": "Weather at the St. Christopher grounding",
   "verdict": "Unknown",
   "reason": "The museum’s date has usable airport context, but no linked local weather account or instrument record."
  },
  {
   "claim": "The painted sky and sea",
   "verdict": "Unknown",
   "reason": "No verified sky description, local measurement or documented change by the artist."
  }
 ],
 "limits": [
  "The archive’s zero visibility encoding is not a literal zero optical range. Wind averaging periods and historical exposure remain unresolved.",
  "All displayed hours are fixed EST (UTC−5). Summaries describe sampled hours, not continuous conditions.",
  "No artwork reproduction is shown because an explicit open licence was not established."
 ]
}