{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.front-phenomenon","code":"thing-front-phenomenon","url":"https://ver.cy/models/thing/front-phenomenon/","name":"front","alternateNames":["warm front","cold front","polar front","squall line","occluded front","occlusion"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"noun.phenomenon","plane":"PHY","domain":["PHY.FLW"],"industry":[],"navPath":"","tags":[],"facets":{"substance":"energy","origin":"natural","agency":"inert","mobility":"not-applicable","scale":"not-applicable","affordances":["observable"]}},"whatItIs":"In meteorology, the boundary zone between two air masses of different temperature and humidity, such as cold, warm, occluded and stationary fronts, often bringing cloud, rain, wind shifts and squall lines.","purpose":"Let an agent handle weather fronts by type, symbols, associated weather and forecasting.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Boundary between air masses","Cold, warm, occluded, stationary","Brings weather changes","Drawn on synoptic charts"],"structure":{"bundles":[{"id":"type","name":"Type","description":"Which front.","layers":[{"id":"kind","name":"Kind","description":"Cold, warm, occluded.","findings":[{"id":"kind-finding","name":"Kind","description":"Front type.","questions":[{"text":"What type of front is approaching?","kind":"definition"},{"text":"How is it drawn on the chart?","kind":"definition"}]}]},{"id":"movement","name":"Movement","description":"Speed and direction.","findings":[{"id":"movement-finding","name":"Movement","description":"Movement.","questions":[{"text":"How fast and in which direction is it moving?","kind":"measurement"},{"text":"When will it arrive?","kind":"measurement"}]}]}]},{"id":"weather","name":"Weather","description":"What it brings.","layers":[{"id":"changes","name":"Changes","description":"Rain and wind.","findings":[{"id":"changes-finding","name":"Changes","description":"Weather changes.","questions":[{"text":"What weather changes are expected as it passes?","kind":"definition"},{"text":"How long will they last?","kind":"measurement"}]}]},{"id":"severe","name":"Severe","description":"Squall lines.","findings":[{"id":"severe-finding","name":"Severe","description":"Severe weather.","questions":[{"text":"Are severe storms or squall lines expected?","kind":"provenance"},{"text":"Are warnings in force?","kind":"provenance"}]}]}]},{"id":"forecasting","name":"Forecasting","description":"Charts.","layers":[{"id":"charts","name":"Charts","description":"Synoptic charts.","findings":[{"id":"charts-finding","name":"Charts","description":"Weather charts.","questions":[{"text":"How are fronts read on a synoptic chart?","kind":"action"},{"text":"From which forecast office?","kind":"provenance"}]}]},{"id":"activities","name":"Activities","description":"Outdoor plans.","findings":[{"id":"activities-finding","name":"Activities","description":"Planning.","questions":[{"text":"How should outdoor, sailing or flying plans adapt?","kind":"action"},{"text":"What conditions are safe?","kind":"boundary"}]}]}]},{"id":"senses","name":"Senses","description":"Disambiguation.","layers":[{"id":"other","name":"Other senses","description":"Military, building.","findings":[{"id":"other-finding","name":"Senses","description":"Other senses.","questions":[{"text":"Is a military front, building front or political front meant?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]},{"id":"teaching","name":"Teaching","description":"Basics.","findings":[{"id":"teaching-finding","name":"Teaching","description":"Teaching.","questions":[{"text":"How can fronts be explained simply?","kind":"action"},{"text":"Which diagrams help?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe weather fronts and their expected effects using official forecasts.","Explain synoptic charts and front symbols."],"mustNot":["Present its own reading of a front as an official warning.","Advise flights, sailing or outdoor events to proceed against warnings tied to a front.","Omit hazards such as squall lines, thunderstorms or icing when describing an approaching front."],"requiresHuman":["Deciding whether to cancel a flight, voyage or outdoor event because of a front."]},"ethics":{"considerations":["Sudden wind shifts and squalls at fronts endanger sailors, pilots and climbers.","Forecast honesty matters more than reassuring wording."],"affectedParties":["Pilots and sailors","People outdoors","Farmers"]},"owners":{"steward":"Nobody owns the weather; the national meteorological service analyses and forecasts fronts.","roles":[],"masterSystems":[]},"relations":[{"target":"oewn-11445694-n","type":"parent","note":"registry parent class"},{"target":"weather phenomenon","type":"related","note":"category"},{"target":"air masses","type":"related","note":"objects"},{"target":"cyclone","type":"related","note":"systems"},{"target":"rain and wind shifts","type":"related","note":"weather"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.front-phenomenon","Open English WordNet: oewn-11480887-n"]},"properties":{"applicability":"required","items":["Temperature contrast:  kelvin - Measured as the temperature difference across the frontal zone at a specified altitude and time.","Frontal zone width:  kilometres - Estimated across the boundary using observed temperature and humidity gradients with an explicitly stated boundary criterion.","Propagation speed:  kilometres per hour - Calculated from successive mapped positions of the front over a known time interval."]},"recognition":{"applicability":"required","items":["Map symbols: triangles (cold), semicircles (warm)","Cloud bands on satellite images","Military or building fronts are other senses","Bands of cloud and rain; shown on maps with coloured lines and symbols."]},"capabilities":{"applicability":"required","items":["read fronts on weather maps","anticipate weather changes","follow warnings for squall lines","teach weather basics"]},"hazards":{"applicability":"required","items":["Severe storms along cold fronts","Sudden wind shifts affecting aviation and sailing","Confusing senses"]},"interfaces":{"applicability":"required","items":["WMO synoptic chart conventions"]},"context":{"applicability":"required","items":["Explaining and forecasting changes in weather.","cold fronts","warm fronts","occluded fronts","stationary fronts","squall lines and dry lines"]}},"sources":[{"title":"Open English WordNet 2024, synset oewn-11480887-n","url":"https://en-word.net/id/oewn-11480887-n","note":"sense and gloss of the concept"},{"title":"Wiktionary: front","url":"https://en.wiktionary.org/wiki/front","note":"word senses and usage"}],"openQuestions":["Should front types be separate entries?","How should chart symbols be linked?","How should other senses be split off?"],"resources":{"spec":"/models/things/publications/thing-front-phenomenon/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-front-phenomenon/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T09:00:24Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:27+00:00: completeness 1.00; sense: WordNet gloss; 2 live sources; review by codex: pass"},"score":1.0}}