Description
Normalize a supplied pressure change to three hours.
Atmospheric state formulas depend on absolute temperature, pressure reference, water mass/volume bases and layer assumptions. Local adiabatic, hydrostatic or precipitation terms can illustrate a supplied model without reconstructing an actual profile, validating an instrument or predicting weather hazards.
Normalize a supplied pressure change to three hours.
When to use this tool
Use Pressure Tendency Three Hour Normalizer when checking the stated atmospheric pressure, temperature, humidity or water-basis term.
How to use the tool and how it works
- Enter pressureChange, elapsedHours. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read threeHourChange. Use the output convention below.
Normalize a supplied pressure change to three hours. Require elapsedHours > 0; threeHourChange = 3*pressureChange/elapsedHours.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| pressureChange | Pressure Change | Required. Finite number. |
| elapsedHours | Elapsed Hours | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| threeHourChange | Three Hour Change | Required. Finite number. |
{
"input": {
"pressureChange": -2,
"elapsedHours": 2
},
"output": {
"threeHourChange": -3
}
}Limitations and assumptions
- This assumes proportional change over the interval; no synoptic tendency shape, actual observation or forecast is determined.
- 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
Use verified observations and an appropriate complete thermodynamic/profile analysis with explicit units, references and moisture assumptions for meteorological conclusions.
References
Similar or alternative tools
- Pressure Tendency Time Window Weight
Return a duration-weighted pressure tendency and reference-duration change.
- Pressure Layer Mass Factor
Return hydrostatic layer mass per area.