Slot: Equation Validity Range (equation_validity_range)

Validity-range conditions for the equation, serialised as a JSON string. For Heat Index: {"min_temperature_F": 80, "min_relative_humidity_pct": 40} — Rothfusz is undefined below 80 °F / 40 % RH.

Tier: conditionally_core

Why this slot matters

The Rothfusz Heat Index is undefined below ~80 °F / 40 % RH; applied outside its range an equation produces plausible-looking nonsense. Without the recorded range, no downstream consumer can flag values computed where the formula does not hold.

In plain terms

Every formula only works within a fence of weather conditions it was designed for. This field writes the fence down, so anyone can check whether a value was computed inside or outside it.

URI: envar:slot/equation_validity_range

Applicable Classes

Name	Description	Modifies Slot
DerivedHeatMetric	Methodology slots specific to derived heat metrics (WBGT, Heat Index, UTCI, a...	yes

Properties

Type and Range

Property	Value
Range	String
Domain Of	DerivedHeatMetric

Cardinality and Requirements

Property	Value

Examples

Value
{"min_wind_speed_m_s": 0.13}

Identifier and Mapping Information

Annotations

property	value
tier	conditionally_core
justification	The Rothfusz Heat Index is undefined below ~80 °F / 40 % RH; applied outside its range an equation produces plausible-looking nonsense. Without the recorded range, no downstream consumer can flag values computed where the formula does not hold.
explanation	Every formula only works within a fence of weather conditions it was designed for. This field writes the fence down, so anyone can check whether a value was computed inside or outside it.

Schema Source

from schema: https://w3id.org/linkml/microschemas/envar

Mappings

Mapping Type	Mapped Value
self	envar:equation_validity_range
native	envar:equation_validity_range

LinkML Source

name: equation_validity_range
annotations:
  tier:
    tag: tier
    value: conditionally_core
  justification:
    tag: justification
    value: The Rothfusz Heat Index is undefined below ~80 °F / 40 % RH; applied outside
      its range an equation produces plausible-looking nonsense. Without the recorded
      range, no downstream consumer can flag values computed where the formula does
      not hold.
  explanation:
    tag: explanation
    value: Every formula only works within a fence of weather conditions it was designed
      for. This field writes the fence down, so anyone can check whether a value was
      computed inside or outside it.
description: 'Validity-range conditions for the equation, serialised as a JSON string.
  For Heat Index: `{"min_temperature_F": 80, "min_relative_humidity_pct": 40}` — Rothfusz
  is undefined below 80 °F / 40 % RH.'
title: Equation Validity Range
examples:
- value: '{"min_wind_speed_m_s": 0.13}'
  description: Liljegren 2008 clamps wind speed below 0.13 m/s
from_schema: https://w3id.org/linkml/microschemas/envar
see_also:
- https://www.weather.gov/safety/heat-index
rank: 1000
domain_of:
- DerivedHeatMetric
range: string