Diffuse CO2 Soil Flux Average
Aggregate patch-representative blank/background-corrected diffuse soil CO2 fluxes with physical area weights; signed uptake/nondetections are retained and unmeasured area is not interpolated.
Description
Soil gas chambers represent patches with different physical areas.
Soil gas chambers represent patches with different physical areas. Area weighting is needed to aggregate net flux over those patches.
Aggregate patch-representative blank/background-corrected diffuse soil CO2 fluxes with physical area weights; signed uptake/nondetections are retained and unmeasured area is not interpolated.
When to use Diffuse CO2 Soil Flux Average
Use this tool to aggregate patch-representative blank/background-corrected diffuse soil CO2 fluxes with physical area weights; signed uptake/nondetections are retained and unmeasured area is not interpolated.
Gather the relevant observations and fitted model parameters. Use the stated units and time basis; keep paired observations aligned.
How to use Diffuse CO2 Soil Flux Average and understand its results
- Gather the relevant observations and fitted model parameters. Use the stated units and time basis; keep paired observations aligned.
- Enter chamberFluxesGramsPerM2Day, representedPatchAreasM2, backgroundFluxesGramsPerM2Day using the field table and calculation rules, then run the tool.
- Read areaWeightedNetFluxGramsPerM2Day, representedNetCo2KgPerDay. 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 |
|---|---|---|---|
| chamberFluxesGramsPerM2Day | Chamber fluxes grams per m2 day | list of number | Required |
| representedPatchAreasM2 | Represented patch areas m2 | list of number | Required |
| backgroundFluxesGramsPerM2Day | Background fluxes grams per m2 day | list of number | Required |
Align chamber and background fluxes with positive represented areas. Preserve signed corrected fluxes, divide total mass by area for g/m²/day and by 1000 for kg/day.1
Paired lists must be nonempty and have equal lengths.
net mass/day = Σ(measured flux − background flux) × patch area Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| areaWeightedNetFluxGramsPerM2Day | Area weighted net flux grams per m2 day | number |
| representedNetCo2KgPerDay | Represented net co2 kg per day | number |
{
"input": {
"chamberFluxesGramsPerM2Day": [
10,
-2
],
"representedPatchAreasM2": [
2,
3
],
"backgroundFluxesGramsPerM2Day": [
1,
1
]
},
"output": {
"areaWeightedNetFluxGramsPerM2Day": 1.8,
"representedNetCo2KgPerDay": 0.009
}
}Limitations and assumptions
No unmeasured-area interpolation or gas-source attribution is performed.
Numbers and computed results must be finite; overflow produces an error. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use SO2 Mass Flux Tonnes Day: Integrate blank-corrected SO2 cross-plume column mass and multiply by signed normal plume speed; negative nondetections/transport remain signed, with no eruption-alert threshold or wind-direction inference. For a complementary task, use CO2 SO2 Molar Ratio Volcanic: Convert paired mass concentrations to a blank-corrected volcanic CO2/SO2 molar ratio on the same gas basis; signed CO2 nondetections remain explicit and a nonpositive SO2 denominator is not assigned a ratio.
References
-
Diffuse CO2 Soil Flux Average — tool.io
Similar or alternative tools
- SO2 Mass Flux Tonnes Day
Integrate blank-corrected SO2 cross-plume column mass and multiply by signed normal plume speed; negative nondetections/transport remain signed, with no eruption-alert threshold or wind-direction inference.
- CO2 SO2 Molar Ratio Volcanic
Convert paired mass concentrations to a blank-corrected volcanic CO2/SO2 molar ratio on the same gas basis; signed CO2 nondetections remain explicit and a nonpositive SO2 denominator is not assigned a ratio.