Description
Return uniqueActivity = firstActivity+secondActivity-sharedActivity and emission = uniqueActivity*emissionFactor.
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 uniqueActivity = firstActivity+secondActivity-sharedActivity and emission = uniqueActivity*emissionFactor.
When to use this tool
Use Emission Activity Overlap Deduction when checking one supplied emission, transport or treatment mass-balance contribution.
How to use the tool and how it works
- Enter firstActivity, secondActivity, sharedActivity, emissionFactor. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uniqueActivity, emission. Use the output convention below.
Require nonnegative firstActivity, secondActivity and emissionFactor, with sharedActivity between zero and min(firstActivity,secondActivity). Return uniqueActivity = firstActivity+secondActivity-sharedActivity and emission = uniqueActivity*emissionFactor.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstActivity | First Activity | Required. Finite number; minimum 0. |
| secondActivity | Second Activity | Required. Finite number; minimum 0. |
| sharedActivity | Shared Activity | Required. Finite number; minimum 0. |
| emissionFactor | Emission Factor | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uniqueActivity | Unique Activity | Required. Finite number. |
| emission | Emission | Required. Finite number. |
{
"input": {
"firstActivity": 100,
"secondActivity": 80,
"sharedActivity": 30,
"emissionFactor": 2
},
"output": {
"uniqueActivity": 150,
"emission": 300
}
}Limitations and assumptions
- Activity values must use the factor's denominator unit. A shared activity deduction avoids the stated double count but does not discover overlaps or validate an emissions inventory.
- 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
- Emission Factor Activity Unit Crosswalk
Return emissions = activity*activityUnitScale*emissionFactor.
- Restoration Seed Area Overlap Deduction Tool
Calculate restoration seed area overlap deduction from explicit caller-supplied inputs.