{ "model": { "rank": 1442, "code": "thing-q37477", "model_id": "vr.tr.fog", "name": "fog", "purpose": "Let an agent handle fog through its type, visibility and duration, which matter for transport safety and forecasting.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.FLW", "industry": "", "version": "", "url": "/models/thing/q37477/", "tier": 2, "score": 146, "payload": { "layer": "wikidata", "aliases": [ "artificial fog", "freezing fog", "Fog in higher levels", "ground fog", "radiation fog", "whiteout", "blowing snow", "mist", "Haar", "ice fog", "sea smoke", "garúa", "June Gloom", "San Francisco fog" ], "aliasCount": 14, "merged": 14, "knownIn": 146, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.fog", "source": { "dataset": "wikidata", "item": "Q37477", "url": "https://www.wikidata.org/wiki/Q37477", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T04:35:51Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q37477", "registryId": "vr.tr.fog", "name": "fog", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.FLW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q37477/", "model": { "registry_id": "vr.tr.fog", "name": "fog", "purpose": "Let an agent handle fog through its type, visibility and duration, which matter for transport safety and forecasting.", "definition": "A cloud of tiny water droplets or ice crystals suspended in the air at or near the ground, reducing horizontal visibility below 1 km.", "what_it_is_for": "Describing and forecasting a weather condition that disrupts transport and affects health and ecosystems.", "affordances": [ "forecast it, especially radiation fog overnight", "observe it, as visibility in weather reports", "plan around it, for aviation, shipping and roads", "harvest water from it, with fog collectors in dry regions" ], "distinguishing_features": [ "Defined by visibility below 1 km at the surface", "A liquid aerosol, a kind of cloud at ground level", "Classified by formation process: radiation, advection, upslope, evaporation", "Distinct from smog and haze, which are pollution aerosols" ], "appearance": "A grey or white veil near the ground that hides distant objects; freezing fog leaves rime on surfaces.", "visual_identification": [ "Visibility below 1 km near the ground", "Mist is similar but thinner, with visibility of 1 km or more", "Low cloud touching high ground is fog to people on the hill" ], "physical_properties": [ { "quantity": "visibility", "typical_range": "below 1000", "unit": "m", "note": "dense fog below 50-200 m depending on the service" }, { "quantity": "droplet diameter", "typical_range": "1-40", "unit": "micrometres", "note": "" }, { "quantity": "liquid water content", "typical_range": "0.05-0.5", "unit": "g/m3", "note": "" } ], "families_and_kinds": [ "radiation fog", "advection fog", "upslope fog", "freezing fog", "ice fog", "steam fog" ], "related_models": [ { "relation": "is a kind of", "target": "aerosol", "why": "water droplets suspended in air" }, { "relation": "is a kind of", "target": "cloud", "why": "cloud at the surface" }, { "relation": "is confused with", "target": "mist and haze", "why": "mist is thinner; haze is dry particles" }, { "relation": "disrupts", "target": "transport", "why": "visibility limits for roads, aviation and shipping" } ], "identifiers": [ { "scheme": "WMO present weather code", "value_or_pattern": "codes 40-49 in SYNOP", "note": "fog reports" }, { "scheme": "METAR code", "value_or_pattern": "FG, BR, FZFG", "note": "aviation weather reports" } ], "standards_and_regulation": [ "WMO Manual on Codes", "ICAO Annex 3 meteorological service for aviation", "Road traffic rules on fog lights and speed in fog" ], "failure_modes_and_hazards": [ "Multi-vehicle collisions in sudden fog", "Flight delays and diversions", "Ship collisions in reduced visibility", "Icing from freezing fog" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "formation", "name": "Formation", "description": "How the fog formed.", "rationale": "Formation type predicts how long fog lasts and how it clears.", "layers": [ { "id": "type", "name": "Type", "description": "Radiation, advection, upslope.", "findings": [ { "id": "type-finding", "name": "Fog type", "description": "The formation process.", "questions": [ { "text": "What type of fog is this?", "kind": "definition" }, { "text": "What conditions formed it?", "kind": "definition" } ] } ] }, { "id": "lifecycle", "name": "Lifecycle", "description": "Onset and dissipation.", "findings": [ { "id": "lifecycle-finding", "name": "Timing", "description": "When it formed and when it will clear.", "questions": [ { "text": "When did it form, and when is it expected to clear?", "kind": "measurement" }, { "text": "What would make it persist?", "kind": "boundary" } ] } ] } ] }, { "id": "observation", "name": "Observation", "description": "Measuring visibility.", "rationale": "Visibility is the defining measurement.", "layers": [ { "id": "visibility", "name": "Visibility", "description": "Measured visibility.", "findings": [ { "id": "visibility-finding", "name": "Visibility reading", "description": "The visibility value and instrument.", "questions": [ { "text": "What is the visibility, and how was it measured?", "kind": "measurement" }, { "text": "How patchy is the fog?", "kind": "measurement" } ] } ] }, { "id": "reports", "name": "Reports", "description": "METAR and SYNOP codes.", "findings": [ { "id": "reports-finding", "name": "Coded report", "description": "The coded reports.", "questions": [ { "text": "How is this fog reported in METAR or SYNOP?", "kind": "provenance" }, { "text": "What does the report miss?", "kind": "boundary" } ] } ] } ] }, { "id": "transport-impact", "name": "Transport impact", "description": "Effects on travel.", "rationale": "Fog is mainly a transport hazard.", "layers": [ { "id": "roads", "name": "Roads", "description": "Driving in fog.", "findings": [ { "id": "roads-finding", "name": "Road guidance", "description": "Rules and advice for drivers.", "questions": [ { "text": "What rules apply to driving in fog here?", "kind": "provenance" }, { "text": "When should travel be avoided?", "kind": "action" } ] } ] }, { "id": "aviation-shipping", "name": "Aviation and shipping", "description": "Visibility minima.", "findings": [ { "id": "aviation-shipping-finding", "name": "Operational minima", "description": "Minima and procedures.", "questions": [ { "text": "Which visibility minima apply at this airport or port?", "kind": "measurement" }, { "text": "What procedures apply below them?", "kind": "action" } ] } ] } ] }, { "id": "other-effects", "name": "Other effects", "description": "Health, ecosystems and water.", "rationale": "Fog also matters for health, ecosystems and water supply.", "layers": [ { "id": "health", "name": "Health", "description": "Fog and pollution.", "findings": [ { "id": "health-finding", "name": "Health effects", "description": "Interaction with pollutants.", "questions": [ { "text": "Does this fog trap pollutants, forming smog?", "kind": "boundary" }, { "text": "Who should be advised?", "kind": "action" } ] } ] }, { "id": "water", "name": "Fog water", "description": "Fog collection and ecosystems.", "findings": [ { "id": "water-finding", "name": "Water yield", "description": "Water gathered from fog.", "questions": [ { "text": "How much water can fog collectors yield here?", "kind": "measurement" }, { "text": "Which ecosystems depend on fog?", "kind": "definition" } ] } ] } ] } ] }, "openQuestions": [ "Should fog types be separate entries?", "How should visibility thresholds differ by service and jurisdiction?", "How should fog forecasts be expressed for agents advising drivers?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "generic", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a fog, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle fog through its type, visibility and duration, which matter for transport safety and forecasting.", "characteristics": { "substance": "energy", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: artificial fog, freezing fog, Fog in higher levels, ground fog, radiation fog, whiteout, blowing snow, mist, Haar, ice fog, sea smoke, garúa.", "14 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 146 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a fog, and on what evidence are they told apart?" ], "whatItIsMadeOf": "energy or a flow of it", "physicalCharacter": [ "Mobility varies between examples.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "artificial fog", "freezing fog", "Fog in higher levels", "ground fog", "radiation fog", "whiteout", "blowing snow", "mist", "Haar", "ice fog", "sea smoke", "garúa" ] } ], "standing": "Described in 146 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 14 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one fog from another, and a fog from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a fog sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a fog from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a fog is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a fog is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a fog is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a fog is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a fog is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a fog is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a fog passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a fog between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a fog, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a fog is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a fog came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a fog and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a fog is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a fog, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a fog, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a fog is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 11, "findings": 13, "questions": 39 } } } }