Description
Return footprint = activity*footprintFactor*equivalenceFactor.
A pollutant load combines concentration with a compatible flow, volume or activity factor. A load rate has amount-per-time units, whereas an integrated load also includes duration; concentration differences alone do not describe removal when flows differ.
Return footprint = activity*footprintFactor*equivalenceFactor.
When to use this tool
Use Ecological Footprint Explicit Factor Term when checking one supplied emission, transport or treatment mass-balance contribution.
How to use the tool and how it works
- Enter activity, footprintFactor, equivalenceFactor. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read footprint. Use the output convention below.
Require nonnegative activity, footprintFactor and equivalenceFactor. Return footprint = activity*footprintFactor*equivalenceFactor. State the factor units so that the product has the intended footprint unit; equivalenceFactor must use the same normalization as footprintFactor.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| activity | Activity | Required. Finite number; minimum 0. |
| footprintFactor | Footprint Factor | Required. Finite number; minimum 0. |
| equivalenceFactor | Equivalence Factor | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| footprint | Footprint | Required. Finite number. |
{
"input": {
"activity": 10,
"footprintFactor": 2,
"equivalenceFactor": 1.5
},
"output": {
"footprint": 30
}
}Limitations and assumptions
- No official footprint factor, land productivity or methodological equivalence is inferred. The product is a caller-defined contribution, not a complete ecological footprint or verified sustainability claim.
- 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
Integrate changing measurements over time and reconcile storage and reactions when a constant-condition product is insufficient.
References
Similar or alternative tools
- Pollutant Damage Weight Contribution
Return attributedQuantity = emittedQuantity*attributedShare and damageContribution = attributedQuantity*suppliedDamagePerUnit.
- Restoration Plot Cover Class Tool
Classify a measured cover percentage using explicit increasing lower bounds with inclusive lower edges; no standard ecological cover scheme is invented.