Description
Return depth-positive-downward temperature gradient and drop.
Aquatic gradients, light attenuation, pressure and acoustic range depend on depth signs and supplied physical coefficients. A local gradient or ideal propagation term does not identify a thermocline, prove whole-lake turnover or detect an organism. Empirical optical products and sound speeds require context-specific measurement.
Return depth-positive-downward temperature gradient and drop.
When to use this tool
Use Thermocline Temperature Depth Gradient when checking the stated local aquatic gradient, attenuation, pressure or range convention.
How to use the tool and how it works
- Enter upperTemperature, lowerTemperature, upperDepth, lowerDepth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read gradient, temperatureDrop. Use the output convention below.
Return depth-positive-downward temperature gradient and drop. Require lowerDepth > upperDepth; gradient = (lowerTemperature-upperTemperature)/(lowerDepth-upperDepth), temperatureDrop = upper-lower.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| upperTemperature | Upper Temperature | Required. Finite number. |
| lowerTemperature | Lower Temperature | Required. Finite number. |
| upperDepth | Upper Depth | Required. Finite number. |
| lowerDepth | Lower Depth | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| gradient | Gradient | Required. Finite number. |
| temperatureDrop | Temperature Drop | Required. Finite number. |
{
"input": {
"upperTemperature": 20,
"lowerTemperature": 10,
"upperDepth": 2,
"lowerDepth": 7
},
"output": {
"gradient": -2,
"temperatureDrop": 10
}
}Limitations and assumptions
- This is one layer difference, not a detected thermocline, full stability analysis or verified temperature observation.
- 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 profiles, appropriate optical/acoustic conditions and a complete suitable physical model for field interpretation or safe operations.
References
Similar or alternative tools
- Lake Turnover Layer Density Gap
Return layer density gap, gradient and a local static-order flag.
- Water Layer Sampling Thickness Tool
Intersect supplied positive-down depth intervals; no water-layer model is estimated.