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Reference ET Coefficient Label

Qualify an explicitly supplied evapotranspiration coefficient reference without providing a crop or reference coefficient.

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Description

Qualify an explicitly supplied evapotranspiration coefficient reference.

Weather accumulation records need explicit reset, carry, observation-time and area-weight conventions. Trace or missing precipitation differs from measured zero, and radar dBZ must be converted to a linear basis before a linear reflectivity mean. Supplied density, timing and weighting terms do not create a forecast or verify actual weather conditions.

Qualify an explicitly supplied evapotranspiration coefficient reference.

When to use this tool

Use Reference ET Coefficient Label when you already have coefficientCode, referenceMethod, sourceVersion and need to qualify an explicitly supplied evapotranspiration coefficient reference.

How to use the tool and how it works

  1. Enter coefficientCode, referenceMethod, sourceVersion. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read token. Use the output convention below.

Enter coefficientCode, referenceMethod, sourceVersion using the field constraints below. Encode these values, in exactly that order, as a JSON array and return the serialized array as text in token. String values are preserved without trimming or external terminology lookup.1

Input fieldMeaning and unitsAccepted input
coefficientCodeCoefficient CodeRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
referenceMethodReference MethodRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
sourceVersionSource VersionRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
Output fieldInterpretationReturned shape
tokenTokenRequired. Text; maximum UTF-16 length 8192.
json
{
  "input": {
    "coefficientCode": "K17",
    "referenceMethod": "Method A",
    "sourceVersion": "v2"
  },
  "output": {
    "token": "[\"K17\",\"Method A\",\"v2\"]"
  }
}

Limitations and assumptions

  • The result records supplied values without providing a crop or reference coefficient. Sources and asserted relationships are not independently authenticated.
  • 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.

Alternative or Complementary methods

Review the original gauge/radar series, clock and accumulation metadata, including resets and missing intervals. Use the complete spatial or process model for basin precipitation, snow or forecasting; local depth contributions and reference gaps do not infer unobserved weather.

References

  1. Calculation and input contract: hydrometeorology/reference-et-coefficient-label — tool.io

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