dew
Enable an AI agent to recognise dew, assess its amount and persistence on a surface, and decide whether to observe, collect, preserve or remove it.
Bundle → Layer → Finding → Questions Filled
5 bundles · 10 layers · 10 findings · 22 questions
Dew recognition and origin Establish whether observed surface water formed by direct condensation and identify competing explanations.
Condensation attribution
Connect observed surface wetting to evidence of local vapour condensation.
Surface condensation evidence
Record the observations supporting dew attribution and the limits of that evidence.
- What observations support water forming at this surface from vapour rather than arriving as liquid? provenance
- Was the onset of wetness observed, or was water already present when observation began? provenance
Competing wetting processes
Distinguish dew from external liquid deposition and liquid released by the receiving object.
Alternative and mixed origins
Record plausible alternative water sources and whether their contributions can be separated.
- Could rain, fog deposition, spray, guttation or leakage account for some or all of the water? boundary
- What evidence allows the dew contribution to be separated, and what must remain classified as mixed or uncertain? provenance
Surface condensation conditions Describe the receiving surface and the local conditions relevant to dew formation.
Surface and vapour temperatures
Relate the receiving surface temperature to the dew point of adjacent air.
Local condensation margin
Record paired thermal and moisture observations with sufficient context to assess condensation conditions.
- What are the surface temperature and local dew-point temperature at the same time and relevant location? measurement
- Does their difference remain distinguishable from measurement uncertainty and spatial variation? measurement
Receiving surface exposure
Describe the surface region and environmental exposure associated with observed dew patterns.
Dew-forming surface context
Record surface orientation, shelter, airflow and thermal context without assuming a single cooling mechanism.
- Which surface region carries dew, and what are its orientation, sky exposure, shelter and nearby heat sources? provenance
- What observations of airflow, cooling or surface differences help explain why dew occurs here and not on adjacent regions? measurement
Dew extent and quantity Describe the physical expression and amount of dew on a defined surface.
Droplets, films and coverage
Characterise the distribution of liquid water over the receiving surface.
Surface wetting pattern
Record whether dew forms discrete droplets or films and how its coverage varies.
- Is the water present as isolated droplets, coalescing droplets, a film or a mixture? measurement
- What fraction of the defined surface is wet, and which observation method and detection limit establish that fraction? measurement
Retained and recovered water
Separate water present on the surface from water recovered through collection.
Dew water inventory
Record measured water quantity with its area basis and limitations of attribution or recovery.
- How much dew-attributed water is retained on the surface, and what surface area and method support that estimate? measurement
- If water was collected, how do incomplete recovery, evaporation and other wetting sources affect interpretation of the yield? measurement
Dew lifecycle and phase Track formation, persistence and the processes that end or transform a dew occurrence.
Onset and wetness duration
Establish the observed time span and continuity of dew-related wetness.
Dew occurrence interval
Record onset, persistence and observation gaps against an explicit wetness criterion.
- When was dew-related wetness first and last detected, and what threshold defines detection? measurement
- Was wetness continuous between those observations, or are dry intervals and observation gaps unresolved? boundary
Water loss and freezing
Distinguish evaporation, drainage, removal and conversion to ice.
Dew fate and handoff
Record where the water goes and when tracking should continue under a neighbouring model.
- Is the surface water increasing, evaporating, draining, being removed or freezing, and what evidence supports those states? measurement
- If ice is present, was liquid dew observed before freezing, or is direct frost deposition still a possible explanation? boundary
- When water leaves the surface or becomes ice, which linked occurrence should carry its subsequent state? boundary
Dew interaction and handling Connect the dew occurrence to surface-specific consequences and justified interventions.
Wet-surface consequences
Record observable effects of dew and relevant requirements of the receiving object.
Dew-related surface effects
Connect dew coverage and duration to observed effects without presuming damage from wetness alone.
- What effects on visibility, traction, electrical operation or biological surface wetness are observed or relevant here? measurement
- Which receiving-object requirement or established threshold determines whether this dew occurrence calls for intervention? action
Collection and condensation control
Record the purpose, constraints and measured outcome of handling dew or changing its formation conditions.
Dew handling decision
Support observation, collection, preservation, removal or condensation control using the occurrence's measured state.
- Should this dew be observed, collected, preserved or removed, and which permitted action serves the stated purpose? action
- What surface contacts and possible contaminants must accompany any collected-water record before its suitability for use is assessed? provenance
- What follow-up measurement will establish collection yield, successful drying or renewed condensation after intervention? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- morning dew
What it is Filled
This model owns occurrences of liquid water formed by condensation of water vapour directly onto a surface, including their formation evidence, surface distribution, evolution and immediate handling.
In scope
- Evidence distinguishing dew from other causes of surface wetness
- The receiving surface and its local thermal and moisture conditions
- Liquid droplets or films attributable to dew formation
- Dew accumulation, persistence, evaporation and movement across the surface
- Collection or removal of dew and its immediate effects on the receiving surface
Out of scope
- Fog and clouds as suspended atmospheric droplets
- Rain, drizzle, spray and their deposition onto surfaces
- Frost formed by direct vapour deposition as ice
- Guttation, sap, leaks and other liquid released by plants or equipment
- The complete biology, material properties or operation of the receiving object
- Treatment, certification and subsequent use of collected water
Why it exists Filled
Enable an AI agent to recognise dew, assess its amount and persistence on a surface, and decide whether to observe, collect, preserve or remove it.
Distinguishing features Filled
- Dew attribution requires evidence of vapour condensing at the receiving surface; visible droplets alone cannot distinguish dew from rain, spray or deposited fog.
- Dew is liquid at formation; ice deposited directly from vapour is frost, while dew that subsequently freezes requires a recorded phase transition.
- Surface temperature compared with the local dew-point temperature supports assessment of condensation conditions; air temperature alone does not establish that dew formed.
- Water emerging from plant margins, pores or equipment openings suggests an internal liquid source that must be distinguished from surface condensation.
- Liquid suspended in air is fog; liquid on a surface may be dew or deposited fog, requiring formation evidence to distinguish them.
What robots and AI may and may not do Filled
Must not
- Claim dew as a safe drinking water source without treatment.
- Ignore condensation on electrical equipment before energizing it.
- Misreport dew point or condensation in building or storage records.
Only with a human decision
- Energizing outdoor or high-voltage equipment with condensation on it.
May
- Measure and report dew formation for weather, agriculture or building monitoring it is authorized to do.
- Warn users when dew makes surfaces such as roads, decks or ladders slippery.
Moral aspects Filled
- Condensation causes mould in homes, which harms health, especially in poor housing.
- Dew harvesting can help water-scarce communities if done safely.
Who is affected
- Building occupants
- Farmers
- Workers on wet surfaces
Owners Filled
Steward
Nobody: a natural occurrence; the owner of a surface answers for hazards on it.
Links to other meta-models Filled
parent
- Q1781205 - registry parent class
- Q1972098 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.dew
- Wikidata: Q41097 (https://www.wikidata.org/wiki/Q41097)
Direct properties required Filled
- Dew attribution: supported dew occurrence | mixed origin | uncertain origin | other wetting process
- Receiving surface: Reference to the receiving object and the specific surface region
- Surface temperature: °C, with position, time and measurement uncertainty
- Local dew-point temperature: °C, with sampling location, time and measurement or derivation method
- Surface temperature minus local dew point: K, with uncertainty propagated from the paired measurements
- Liquid morphology: isolated droplets | coalescing droplets | continuous film | mixed
- Wetted surface fraction: % of a defined observed surface area
- Dew water loading: g/m² of a stated surface area, with attribution and measurement method
- Occurrence state: accumulating | persisting | evaporating | draining | freezing | ended | unresolved; concurrent states allowed
- Surface wetness duration: minutes or hours, with detection threshold and any gaps or uncertain endpoints
Recognition required Filled
- Droplets of water on grass, leaves, cars or windows in the early morning.
- Moisture that forms on surfaces cooler than the air's dew point.
Capabilities and actions required Filled
- Inspect surface water and assess whether its origin is dew, mixed wetting or unresolved.
- Measure dew coverage, water loading and wetness duration on a defined surface.
- Monitor surface temperature and local dew point to assess continued condensation or drying.
- Collect dew while recording collection efficiency, surface contact and possible contamination.
- Promote or suppress condensation by changing surface exposure or thermal conditions where intervention is permitted.
- Remove dew from a sensitive surface and verify whether wetness returns.
Hazards and failure modes required Filled
- Wet surfaces cause slips and falls.
- Condensation on electrical equipment can cause short circuits.
Standards and interfaces required Filled
- The International Cloud Atlas, issued by the World Meteorological Organization, classifies dew as a hydrometeor.
Context of use required Filled
- Dew forms on exposed surfaces when those surfaces cool sufficiently for water vapor to condense into liquid droplets.
- It is encountered on vegetation, vehicles, instruments and buildings, where surface wetness matters for observation, maintenance and moisture assessment.
Sources Filled
- Wikidata item Q41097: dew - identity and sense of the item
- Wikipedia: Dew - general description of the item
Open questions
- Does this registry entry include indoor and engineered surface condensation, or should those occurrences belong to a separate condensation model?
- What minimum evidence and confidence vocabulary should be required to classify an occurrence as dew when its formation was not directly observed?
- Which measurement methods and area conventions should be used for comparable dew loading on leaves, rough surfaces and purpose-built collectors?
- How should mixed dew, fog deposition and rain be represented when their individual contributions cannot be measured?
- At what point should frozen dew or coalesced runoff become a separate linked occurrence rather than remain part of the dew record?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q41097/spec.json