humidity
Let an agent explain humidity and its measures, relay measurement, weather and climate roles from meteorological references, describe effects on comfort, health, buildings and materials in general terms, and distinguish humidity from moisture content of solids, dew point and precipitation.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain humidity and its measures, relay measurement, weather and climate roles from meteorological references, describe effects on comfort, health, buildings and materials in general terms, and distinguish humidity from moisture content of solids, dew point and precipitation.
The amount of water vapour in air or another gas, expressed as absolute humidity in mass per volume, relative humidity as a percentage of saturation at a given temperature, or specific humidity and mixing ratio, and measured with hygrometers; air humidity is a climatic factor affecting comfort, weather, health and materials, and the moisture content of substrates such as compost is an analogous measure in horticulture.
What it is for: Not applicable; a state of the air.
It can be explain measures; relay measurement and weather role; describe effects; distinguish related concepts.
Distinguishing features
Vapour content
Temperature dependence
Several measures
Wide effects
What it looks like
Not a visible object; felt as dampness or dryness.
Physical character
relative humidity range: 0-100 percent
comfort range indoors: about 30-60 percent - typical guidance
saturation vapour pressure at 20 C: about 2.34 kPa
How it is recognised
Water vapour content of air
Absolute, relative and specific humidity, mixing ratio; compost moisture as an analogue
Dew point is a temperature; moisture content refers to solids; precipitation is liquid water
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is a kind of - in registry terms
is measured by - in meteorology
In practice
Families and kinds
absolute humidity
relative humidity
specific humidity and mixing ratio
indoor humidity
soil and compost moisture as related measures
Standards and regulation
WMO measurement standards
Building and workplace guidance on indoor humidity
Storage standards for archives and museums
Failure modes and hazards
Confusing relative and absolute humidity
Mould and damage at high humidity
Dryness effects at low humidity
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.humidity
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What humidity is.
Science.
Definition
Definition and measures.
Definition
Definition.
- What is humidity, and how do absolute, relative and specific humidity and dew point relate? definition
- Is the question about air humidity, indoor conditions, weather or a substrate such as compost? boundary
Measurement
Measurement.
Measurement
Measurement.
- How do hygrometers, psychrometers and sensors measure humidity? measurement
- Which entry fits hygrometer? action
Weather Weather and climate.
Science.
Weather
Weather.
Weather
Weather.
- How does humidity drive clouds, precipitation, fog and heat index? provenance
- Which references are standard? provenance
Climate
Climate.
Climate
Climate.
- How does humidity vary by climate zone, and how is it changing with warming, as assessments report? provenance
- Which sources are cited? provenance
Effects Effects.
Application.
Health
Comfort and health.
Health
Health.
- How does humidity affect comfort, respiratory health and disease transmission, in general terms? provenance
- Is the user asking about a personal health matter, which needs a professional? boundary
Buildings
Buildings and materials.
Buildings
Buildings.
- How is humidity controlled in buildings, archives and industry, and what damage does it cause? provenance
- Which entry fits dehumidifier? action
Context Related measures.
Context.
Substrates
Soil and compost moisture.
Substrates
Substrates.
- How is moisture in soil and compost measured and managed, and why is it distinct from air humidity? provenance
- Which entry fits soil moisture? action
History
History.
History
History.
- How was humidity first measured, from Leonardo s and de Saussure s hygrometers onward? provenance
- Which entry fits the history of meteorology? action
What the second pass must settle
- Should relative humidity and dew point be separate primary entries?
- How should meteorological references be linked?
- The registry entry has a compost moisture alias that is a different measure; should it be split off?