Light Extinction Coefficient Secchi Calculator
Estimate optical attenuation from paired measured Secchi depths using explicit calibrated dimensionless k·Z product; not assumed measured extinction, spectral turbidity decomposition or layered light propagation.
Description
Secchi depth can support an optical attenuation estimate under a locally calibrated product.
Secchi depth can support an optical attenuation estimate under a locally calibrated product. The coefficient is modeled rather than directly measured.1
Enter positive depth list and positive dimensionless extinction×Secchi product. Return one coefficient per depth.
When to use Light Extinction Coefficient Secchi Calculator
Use Light Extinction Coefficient Secchi Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. Empty lists are permitted. No spectral separation, layered propagation or universal product is supplied.
Prepare the observed lake or sample measurements and explicit calibration, reference values or thresholds requested. Keep depth coverage, units, dates and sampling conditions consistent.
How to use Light Extinction Coefficient Secchi Calculator and understand its results
- Prepare the observed lake or sample measurements and explicit calibration, reference values or thresholds requested. Keep depth coverage, units, dates and sampling conditions consistent.
- Enter secchiDepthsM, callerExtinctionSecchiProduct using the field table and calculation rules, then run the tool.
- Read secchiEstimatedExtinctionCoefficientsPerM. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| secchiDepthsM | Secchi depths m | list of number | Required |
| callerExtinctionSecchiProduct | Caller extinction secchi product | number | Required |
Enter positive depth list and positive dimensionless extinction×Secchi product. Return one coefficient per depth.
extinctionPerMeter=callerProduct/SecchiDepth Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| secchiEstimatedExtinctionCoefficientsPerM | Secchi estimated extinction coefficients per m | list of number |
{
"input": {
"secchiDepthsM": [
1,
2
],
"callerExtinctionSecchiProduct": 1.7
},
"output": {
"secchiEstimatedExtinctionCoefficientsPerM": [
1.7,
0.85
]
}
}Limitations and assumptions
Empty lists are permitted. No spectral separation, layered propagation or universal product is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Euphotic Zone Depth From Secchi Calculator: Secchi-based euphotic depth uses a caller’s local multiplier. An estimate beyond bottom should remain visible as a modeled value. For a complementary task, use Secchi Depth Transparency Recorder: Secchi disappearance and reappearance readings define paired clarity estimates. Reaching the lake bottom censors the observation.
References
Similar or alternative tools
- Euphotic Zone Depth From Secchi Calculator
Secchi-based euphotic depth uses a caller’s local multiplier. An estimate beyond bottom should remain visible as a modeled value.
- Secchi Depth Transparency Recorder
Secchi disappearance and reappearance readings define paired clarity estimates. Reaching the lake bottom censors the observation.