Continentality Gorczynski Index

Evaluate named Gorczynski annual thermal-range continentality, retaining signed index and rejecting equatorial singularity; no geography or universal climate category.

Description

Gorczynski continentality summarizes annual temperature range with a latitude correction.

Gorczynski continentality summarizes annual temperature range with a latitude correction. The index describes a chosen climatic contrast measure rather than a fraction constrained between zero and one hundred.^[1]

Evaluate named Gorczynski annual thermal-range continentality, retaining signed index and rejecting equatorial singularity; no geography or universal climate category.

When to use Continentality Gorczynski Index

Use this tool to evaluate named Gorczynski annual thermal-range continentality, retaining signed index and rejecting equatorial singularity; no geography or universal climate category.

Prepare the climate observations and independently chosen model parameters. Confirm units, daily coverage, chronological order and the intended seasonal window.

How to use Continentality Gorczynski Index and understand its results

Prepare the climate observations and independently chosen model parameters. Confirm units, daily coverage, chronological order and the intended seasonal window.
Enter monthlyMeanTemperaturesC, absoluteLatitudeDegrees using the field table and calculation rules, then run the tool.
Read gorczynskiContinentalityIndex. 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
monthlyMeanTemperaturesC	Monthly mean temperatures c	list of number	Required
absoluteLatitudeDegrees	Absolute latitude degrees	number	Required

Enter exactly twelve monthly mean temperatures in °C and absolute latitude greater than zero and at most 90°. The tool calculates the annual range and displayed index. It retains signed results rather than clamping them to a classification interval.

continentality = 1.7(max monthly T − min monthly T)/sin(|latitude|π/180) − 20.4

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

Output field	Meaning	Value type
gorczynskiContinentalityIndex	Gorczynski continentality index	number

json

{
  "input": {
    "monthlyMeanTemperaturesC": [
      0,
      0,
      0,
      0,
      0,
      0,
      20,
      20,
      20,
      20,
      20,
      20
    ],
    "absoluteLatitudeDegrees": 30
  },
  "output": {
    "gorczynskiContinentalityIndex": 47.600000000000016
  }
}

Limitations and assumptions

Latitude zero is rejected because the equation is singular there. The tool does not isolate ocean influence, elevation or atmospheric circulation, or assign universal climate categories.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Oceanity Conrad Index: Report named Conrad range/latitude-offset continentality and explicit 100-minus complementary oceanity convention; not clamped percentages or an independently validated maritime-climate probability. For a complementary task, use Precipitation Seasonality CV: Report measured twelve-month precipitation seasonality under population monthly SD, not sample SD or silently smoothed/+1 precipitation; zero mean leaves CV undefined.

References

Continentality Gorczynski Index — tool.io

Similar or alternative tools

Oceanity Conrad Index
Report named Conrad range/latitude-offset continentality and explicit 100-minus complementary oceanity convention; not clamped percentages or an independently validated maritime-climate probability.
Precipitation Seasonality CV
Report measured twelve-month precipitation seasonality under population monthly SD, not sample SD or silently smoothed/+1 precipitation; zero mean leaves CV undefined.