Chill Hours Accumulator 0-7.2C
Declaredinclusive0…7.2Cchill-hourbinaccumulationactualuniformtimeobservations,not DynamicModelchillportionsor dormancyforecast. Actual independent units,calibration,measurement definitions/coverage and model applicability;not a climate forecast,causal determination,geodesy operation or safe travel/design approval.
Description
A simple chill-hour model totals time spent in a declared cool-temperature interval.
A simple chill-hour model totals time spent in a declared cool-temperature interval.1
This tool counts uniform observation windows with temperatures from 0 through 7.2 °C inclusive, rather than calculating chill portions or selecting a crop requirement.
When to use Chill Hours Accumulator 0-7.2C
Use this tool to apply the stated chill hours accumulator 0-7.2c operation with an explicit input and unit basis.
How to use Chill Hours Accumulator 0-7.2C and how it works
- Establish the measurement basis and units described above.
- Enter actualEqualObservationTemperaturesC, actualObservationHoursEach and run the tool.
- Read result.value using the output meanings below.
- If input is rejected, correct the stated type, range, ordering or alignment issue and rerun; review successful results under the declared convention.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualEqualObservationTemperaturesC | Equal Observation Temperatures C. Units, ordering and applicable branch are specified in the algorithm. | array of number | required; dense; align related rows as specified; further conditions in the algorithm |
| actualObservationHoursEach | Observation Hours Each. Units, ordering and applicable branch are specified in the algorithm. | number | required; finite; strictly positive; further conditions in the algorithm |
Require nonempty finite temperatures and positive duration hours for every observation. Count the temperatures in the closed interval [0,7.2] and multiply by that duration; unequal windows need preprocessing.
chillHours = count(0 ≤ temperatureC ≤ 7.2) × hoursEach Apply the declared units, ordering and branch conditions.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the declared output fields. | object |
| result.value | Total qualifying chill hours. | number |
{
"input": {
"actualEqualObservationTemperaturesC": [
-1,
0,
7.2,
8
],
"actualObservationHoursEach": 2
},
"output": {
"result": {
"value": 4
}
}
}Limitations and assumptions
The output applies the declared operation to the values you supply. Establish the measurement basis, units, coefficients and any caller-selected rules before interpreting it. The tool does not independently collect or verify observations or decide whether a model or reference applies.
Supply explicit required fields with the documented types and dense aligned arrays. Unknown fields, wrong types and nonfinite numbers are rejected. Branch-specific constraints are explained above. A returned boolean, signed difference or tied result follows the stated convention; an input error instead means the required input contract was not satisfied. Very large inputs or outputs may be rejected by shared resource limits.
Alternative or Complementary methods
For a related operation, use Thawing Index Accumulator Calculator. A thawing index accumulates warmth above freezing using daily mean temperature.
For a related operation, use Accumulated Freezing Degree Days Calculator. Freezing degree-days accumulate the magnitude of daily mean temperatures below freezing.
References
-
Chill Hours Accumulator 0-7.2C — tool.io
Similar or alternative tools
- Thawing Index Accumulator Calculator
A thawing index accumulates warmth above freezing using daily mean temperature.
- Accumulated Freezing Degree Days Calculator
Freezing degree-days accumulate the magnitude of daily mean temperatures below freezing.