Lightning Flash Density Per KM2 Year Lookup
Actual deduplicated flash density over covered space/time and independent detection efficiency; strokes not substituted for flashes, no lightning forecast. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Lightning flash density is a count normalized by observed area and time.
Lightning flash density is a count normalized by observed area and time.1
Detection efficiency and duplicate removal affect how observed flashes relate to the underlying flash population.
When to use Lightning Flash Density Per KM2 Year Lookup
Use this tool to calculate or review the supplied observations under the stated rules. Establish the observation method, units, averaging period and applicable reference or calibration.
How to use Lightning Flash Density Per KM2 Year Lookup and understand its results
- Establish the observation method, units, averaging period and applicable reference or calibration.
- Enter independentlyDeduplicatedFlashCount, observedCoveredAreaKM2, observedCoverageYears, independentDetectionEfficiency, using the field meanings and rules below, then run the tool.
- Read efficiencyAdjustedFlashDensityPerKM2Year, using the output meanings and calculation rules below.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlyDeduplicatedFlashCount | Independently deduplicated flash count | number | Required |
| observedCoveredAreaKM2 | Observed covered area k m2 | number | Required |
| observedCoverageYears | Observed coverage years | number | Required |
| independentDetectionEfficiency | Independent detection efficiency | number | Required |
Use a nonnegative safe-integer flash count, positive covered area and coverage years, and detection efficiency in (0,1]. Divide the count by area, years and efficiency. Zero counted flashes returns zero.
density=flashCount/(areaKM2×years×detectionEfficiency) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| efficiencyAdjustedFlashDensityPerKM2Year | Efficiency adjusted flash density per k m2 year | number |
{
"input": {
"independentlyDeduplicatedFlashCount": 100,
"observedCoveredAreaKM2": 10,
"observedCoverageYears": 2,
"independentDetectionEfficiency": 0.5
},
"output": {
"efficiencyAdjustedFlashDensityPerKM2Year": 10
}
}Limitations and assumptions
The count must already be deduplicated, and area, time coverage and detection efficiency independently established. A zero observed count is not proof of zero future hazard.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite.
Alternative or Complementary methods
For a related step, use Rain Gauge Wind Undercatch Correction Percent Calculator: Wind undercatch occurs when a rain gauge captures less precipitation than the reference amount. For a complementary comparison, use Daily Clear Sky Insolation Estimate Calculator: Integrating irradiance over time gives radiant energy per area.
References
Similar or alternative tools
- Rain Gauge Wind Undercatch Correction Percent Calculator
Wind undercatch occurs when a rain gauge captures less precipitation than the reference amount.
- Daily Clear Sky Insolation Estimate Calculator
Integrating irradiance over time gives radiant energy per area.