Clearcut Opening Width Windthrow Checker

Audit actual clearcut opening-width/boundary-height exposure under independently verified local criterion, not windthrow probability or safe opening size. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.

Description

A clearcut-width-to-tree-height ratio compares opening geometry with a supplied review screen.

A clearcut-width-to-tree-height ratio compares opening geometry with a supplied review screen.^[1]

Wind exposure, rooting and soil conditions require separate analysis before interpreting blowdown risk. Use this tool to calculate clearcut opening width windthrow checker from the supplied measurements and assumptions.

When to use Clearcut Opening Width Windthrow Checker

Use this tool to calculate clearcut opening width windthrow checker from the supplied measurements and assumptions. Establish the species/site, survey protocol, units, sampled area or exposure, and the independently chosen reference or model.

How to use Clearcut Opening Width Windthrow Checker and understand its results

Establish the species/site, survey protocol, units, sampled area or exposure, and the independently chosen reference or model.
Enter observedOpeningWidthsM, observedBoundaryDominantHeightsM, callerMaximumOpeningHeightRatios, using the field meanings and rules below, then run the tool.
Read observedOpeningHeightRatios, openingRatioReviewIndices. Interpret the fields using their units, signs and evidence conventions below.
If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.

Input field	Meaning	Value type	Requirement
observedOpeningWidthsM	Observed opening widths m	list of number	Required
observedBoundaryDominantHeightsM	Observed boundary dominant heights m	list of number	Required
callerMaximumOpeningHeightRatios	Caller maximum opening height ratios	list of number	Required

Enter nonempty aligned nonnegative opening widths and positive tree heights, plus aligned nonnegative caller maximum ratios. Divide each width by its corresponding height and flag indices strictly greater than its corresponding caller ratio; equality does not flag. No wind speed, root anchorage or failure probability is calculated.

ratio_i=openingWidth_i/treeHeight_i; review={i:ratio_i>callerMaximumRatio_i}

Use the exact units, boundary rules, ordering and missing-evidence conventions above.

Output field	Meaning	Value type
observedOpeningHeightRatios	Observed Opening Height Ratios; follow the units, sign, ordering and evidence convention stated above	list of number
openingRatioReviewIndices	Opening Ratio Review Indices; follow the units, sign, ordering and evidence convention stated above	list of number

json

{
  "input": {
    "observedOpeningWidthsM": [
      10,
      20
    ],
    "observedBoundaryDominantHeightsM": [
      10,
      10
    ],
    "callerMaximumOpeningHeightRatios": [
      1.5,
      1.5
    ]
  },
  "output": {
    "observedOpeningHeightRatios": [
      1,
      2
    ],
    "openingRatioReviewIndices": [
      1
    ]
  }
}

Limitations and assumptions

Wind exposure, rooting and soil conditions require separate analysis before interpreting blowdown risk. Interpretation depends on the units, sampling scope and exact model described above.

All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.

Alternative or Complementary methods

Use Crop Tree Release Spacing RD-Ratio Tool for this related task: Crown spacing can be compared with the sum of independently measured crown radii.

Use Riparian Buffer Width By Stream Class Lookup when its separate inputs and assumptions fit the question: Riparian buffer references depend on site, jurisdiction, objectives and the governing method.

References

Clearcut Opening Width Windthrow Checker — tool.io

Similar or alternative tools

Crop Tree Release Spacing RD-Ratio Tool
Crown spacing can be compared with the sum of independently measured crown radii.
Riparian Buffer Width By Stream Class Lookup
Riparian buffer references depend on site, jurisdiction, objectives and the governing method.