Freezing Rain Depth Ice Load MM

Account supplied liquid-equivalent freezing rain, collection/retention and ice density into equivalent uniform ice load/thickness; not radial wire growth, structural capacity or travel safety.

Description

Freezing-rain liquid-equivalent depth can be converted to retained ice mass per area.

Freezing-rain liquid-equivalent depth can be converted to retained ice mass per area. Equivalent uniform thickness differs from radial growth around a wire or branch.^[1]

Account supplied liquid-equivalent freezing rain, collection/retention and ice density into equivalent uniform ice load/thickness; not radial wire growth, structural capacity or travel safety.

When to use Freezing Rain Depth Ice Load MM

Use this tool to account supplied liquid-equivalent freezing rain, collection/retention and ice density into equivalent uniform ice load/thickness; not radial wire growth, structural capacity or travel safety.

Prepare the observed sounding, cloud records or forecast verification data. Check pressure and height coordinates, wind conventions and the stated units.

How to use Freezing Rain Depth Ice Load MM and understand its results

Prepare the observed sounding, cloud records or forecast verification data. Check pressure and height coordinates, wind conventions and the stated units.
Enter freezingRainLiquidDepthMm, catchEfficiencyFraction, frozenRetainedFraction, liquidWaterDensityKgPerM3, iceDensityKgPerM3, exposedCollectionAreaM2 using the field table and calculation rules, then run the tool.
Read modelIceMassPerAreaKgPerM2, modelEquivalentUniformIceThicknessMm, modelTotalCollectedIceMassKg. 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
freezingRainLiquidDepthMm	Freezing rain liquid depth mm	number	Required
catchEfficiencyFraction	Catch efficiency fraction	number	Required
frozenRetainedFraction	Frozen retained fraction	number	Required
liquidWaterDensityKgPerM3	Liquid water density kg per m3	number	Required
iceDensityKgPerM3	Ice density kg per m3	number	Required
exposedCollectionAreaM2	Exposed collection area m2	number	Required

Use nonnegative rain depth and collection area, positive water/ice densities and both efficiency fractions in [0,1]. Return kg/m², equivalent thickness in mm and total collected mass in kg.

ice mass per area = liquid depth mm/1000 × water density × catch fraction × retained fraction

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
modelIceMassPerAreaKgPerM2	Model ice mass per area kg per m2	number
modelEquivalentUniformIceThicknessMm	Model equivalent uniform ice thickness mm	number
modelTotalCollectedIceMassKg	Model total collected ice mass kg	number

json

{
  "input": {
    "freezingRainLiquidDepthMm": 10,
    "catchEfficiencyFraction": 0.5,
    "frozenRetainedFraction": 0.8,
    "liquidWaterDensityKgPerM3": 1000,
    "iceDensityKgPerM3": 800,
    "exposedCollectionAreaM2": 2
  },
  "output": {
    "modelIceMassPerAreaKgPerM2": 4,
    "modelEquivalentUniformIceThicknessMm": 5,
    "modelTotalCollectedIceMassKg": 8
  }
}

Limitations and assumptions

Collection and retention are supplied assumptions. Ice geometry and structural load capacity are not modeled.

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 Hail Kinetic Energy Damage Proxy: Sum spherical caller hail inventory kinetic energy per represented impact area; impact speeds are supplied, not terminal-speed lookup, and energy alone is not a damage, injury or safe-shelter prediction. For a complementary task, use Snow Load Stem Bending Stress Breakage Checker: Screen circular intact stem cantilever bending under caller transverse snow-weight lever arms and material stress limits; this elementary idealization does not predict tree breakage or certify public/work safety.

References

Freezing Rain Depth Ice Load MM — tool.io

Similar or alternative tools

Hail Kinetic Energy Damage Proxy
Sum spherical caller hail inventory kinetic energy per represented impact area; impact speeds are supplied, not terminal-speed lookup, and energy alone is not a damage, injury or safe-shelter prediction.
Snow Load Stem Bending Stress Breakage Checker
Screen circular intact stem cantilever bending under caller transverse snow-weight lever arms and material stress limits; this elementary idealization does not predict tree breakage or certify public/work safety.