Greenhouse Effect Enhancement Delta
Compare actual supplied surface temperature against measured outgoing-longwave blackbody-equivalent emission temperature; unlike solar equilibrium temperature, no absorbed/OLR equality or causal greenhouse attribution is assumed.
Description
Effective radiating temperature is the blackbody temperature corresponding to an outgoing longwave flux.
Effective radiating temperature is the blackbody temperature corresponding to an outgoing longwave flux. Subtracting it from a supplied surface temperature gives a temperature contrast, which can illustrate a greenhouse-related energy-balance concept without attributing its causes.1
Compare actual supplied surface temperature against measured outgoing-longwave blackbody-equivalent emission temperature; unlike solar equilibrium temperature, no absorbed/OLR equality or causal greenhouse attribution is assumed.
When to use Greenhouse Effect Enhancement Delta
Use this tool to compare actual supplied surface temperature against measured outgoing-longwave blackbody-equivalent emission temperature; unlike solar equilibrium temperature, no absorbed/OLR equality or causal greenhouse attribution is assumed.
Prepare the climate observations and any independently chosen thresholds or model parameters. Confirm units, daily coverage, time order and the intended seasonal window.
How to use Greenhouse Effect Enhancement Delta and understand its results
- Prepare the climate observations and any independently chosen thresholds or model parameters. Confirm units, daily coverage, time order and the intended seasonal window.
- Enter observedSurfaceTemperatureK, observedOutgoingLongwaveWPerM2, stefanBoltzmannWPerM2K4 using the field table and calculation rules, then run the tool.
- Read blackbodyEquivalentEmissionTemperatureK, observedSurfaceEmissionTemperatureDifferenceK. 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 |
|---|---|---|---|
| observedSurfaceTemperatureK | Observed surface temperature k | number | Required |
| observedOutgoingLongwaveWPerM2 | Observed outgoing longwave w per m2 | number | Required |
| stefanBoltzmannWPerM2K4 | Stefan boltzmann w per m2 k4 | number | Required |
Enter a positive surface temperature in kelvin, nonnegative outgoing longwave radiation in W/m² and a positive Stefan–Boltzmann constant in W/m²/K⁴. The tool calculates the effective radiating temperature and the signed surface-minus-radiating-temperature difference. Zero outgoing flux is valid and produces Te = 0 K.
Te = (OLR/σ)^0.25; enhancement = surface temperature − Te Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| blackbodyEquivalentEmissionTemperatureK | Blackbody equivalent emission temperature k | number |
| observedSurfaceEmissionTemperatureDifferenceK | Observed surface emission temperature difference k | number |
{
"input": {
"observedSurfaceTemperatureK": 300,
"observedOutgoingLongwaveWPerM2": 221.4990007421875,
"stefanBoltzmannWPerM2K4": 5.670374419e-8
},
"output": {
"blackbodyEquivalentEmissionTemperatureK": 250,
"observedSurfaceEmissionTemperatureDifferenceK": 50
}
}Limitations and assumptions
The model uses a blackbody relation without fitting emissivity or an atmospheric vertical profile. A negative temperature contrast is retained. The result is not an attribution of warming to a particular gas and does not establish a full planetary equilibrium or feedback response.
Numeric inputs and returned numeric values must be finite; an unrepresentable returned value produces an error. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Radiative Forcing CO2 Logarithm: Calculate signed logarithmic CO2 radiative forcing change using caller concentration convention/coefficient; no warming, verified forcing or neglected gas/aerosol response is inferred. For a complementary task, use Net Radiation Budget Surface Balance: Account measured down/up shortwave and longwave fluxes with declared downward-positive net convention and actual exposure; no inferred surface emissivity, sensible/latent partition or equilibrium temperature.
References
-
Greenhouse Effect Enhancement Delta — tool.io
Similar or alternative tools
- Radiative Forcing CO2 Logarithm
Calculate signed logarithmic CO2 radiative forcing change using caller concentration convention/coefficient; no warming, verified forcing or neglected gas/aerosol response is inferred.
- Net Radiation Budget Surface Balance
Account measured down/up shortwave and longwave fluxes with declared downward-positive net convention and actual exposure; no inferred surface emissivity, sensible/latent partition or equilibrium temperature.