{
 "schema": "nephos.method.v1",
 "slug": "friedrich-meadows-greifswald",
 "title": "Caspar David Friedrich, Meadows near Greifswald, c. 1821–22, Hamburger Kunsthalle 1047",
 "urls": ["/studies/friedrich-meadows-greifswald"],
 "written": {
  "summary": "The museum dates the painting 1821/22. Its drawing is probably from around 1806 and was reused in Dresden. The 1806 journey is documented; the day of the meadow drawing and the weather represented in the canvas are not.",
  "items": [
   {"quote": "vermutlich bereits um 1806", "source": "Johannes Grave, museum chronicle: probably already around 1806 (Nephos translation)", "url": "https://cdfriedrich.de/chronik/wiesen-bei-greifswald/"},
   {"quote": "In seinem Dresdener Atelier", "source": "Pommersches Landesmuseum: in his Dresden studio (Nephos translation)", "url": "https://www.pommersches-landesmuseum.de/digitales/detail/friedrich-in-den-wiesen-stop-motion-film"}
  ]
 },
 "records": [
  {"name": "The museums’ 1806 chronology", "detail": "Departure from Dresden on 24 April; Greifswald on 13 June; Rügen from 29 June to 20 July; return in August. May–July supplies three whole calendar months of travel context, not dates for the drawing.", "url": "https://cdfriedrich.de/en/chronicle/?_chronicle_type=works,biography"},
  {"name": "Berlin Climate Record, Kadow et al. (2016)", "detail": "Daily mean temperatures for Berlin’s changing inner-city observing sites. Regional context for the journey only; temperature supplies no test of cloud or haze at Greifswald.", "url": "https://doi.org/10.1594/PANGAEA.869767"}
 ],
 "gaps": [
  "No inscription or contemporary document has been verified that dates this drawing to a day or month.",
  "No local weather testimony has been verified for its making. Greifswald’s DWD daily archive starts much later."
 ],
 "tests": [
  {"claim": "Does the canvas date identify the weather to compare?", "result": "No. The museum connects the later studio canvas to an earlier drawing, also used for a moonlit view. The making history separates a recorded place from a recorded sky."},
  {"claim": "What did Friedrich change?", "result": "The museum’s account describes a strongly symmetrical arrangement of the view. Birte Frenssen, discussing the drawing in Weltkunst, identifies an elongated, narrowed church tower. These are attributed readings of his construction of the landscape."},
  {"claim": "Can the regional thermometer confirm the painted cloudless sky?", "result": "No. Berlin’s temperatures describe Berlin during the journey. They neither verify nor contradict cloudlessness or haze at the meadow."
  }
 ],
 "finding": "A recognisable Greifswald view was reshaped for a later studio painting. The documentary dates support travel context, but do not turn the painted sky into an observation from a known day.",
 "verdicts": [
  {"claim": "The weather in the painted sky", "verdict": "Unknown", "reason": "The drawing has only an approximate year and the canvas was made later; no local sky record can be matched."}
 ],
 "limits": [
  "The museum uses 1821/22; Heck’s 2018 article uses the broader 1820–22. Neither gives a weather day.",
  "The Berlin series changes observing sites. Its publisher corrected identified errors but applied no additional bias correction. No modern anomaly or weather rank is claimed.",
  "The 1806 weather window concerns the journey and is conditional context for a drawing only probably dated to that year."
 ]
}