Description
Return capped seedbed temperature degree-hours.
Soil bench and profile terms depend on geometry, reference origins, heat-capacity bases and sign conventions. A pressure, stress or strain is a limited measured/model quantity rather than a complete soil-strength, heat-transport or field-state assessment. Reference lines and physical coefficients are supplied rather than inferred.
Return capped seedbed temperature degree-hours.
When to use this tool
Use Seedbed Thermal Degreehour Term when checking the stated soil geometry, thermal, mechanical or measurement convention.
How to use the tool and how it works
- Enter temperature, base, hours, upperCap. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read degreeHours. Use the output convention below.
Return capped seedbed temperature degree-hours. Require hours >= 0 and upperCap >= base; degreeHours = max(0,min(temperature,upperCap)-base)*hours.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| temperature | Temperature | Required. Finite number. |
| base | Base | Required. Finite number. |
| hours | Hours | Required. Finite number; minimum 0. |
| upperCap | Upper Cap | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| degreeHours | max(0,min(temperature,upperCap)-base)*hours; supplied thermal-time index, not a germination forecast. | Required. Finite number. |
{
"input": {
"temperature": 20,
"base": 10,
"hours": 6,
"upperCap": 30
},
"output": {
"degreeHours": 60
}
}Limitations and assumptions
- Base/cap are supplied and degree differences must match; no germination timing, crop-specific response or appropriate treatment is inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated measurements and an appropriate complete soil/engineering model for material properties, field behavior or safe practical loading.
References
Similar or alternative tools
- Soil Thermal Diffusivity Capacity Term
Return a two-component volume heat capacity and diffusivity.
- Infiltration Ponding Time Boundary
Classify time relative to a supplied ponding boundary.