Row Shadow Width North South

Project ideal vertical north–south row canopy shadow onto east–west row normal using supplied sun angles/dimensions; no coordinates, terrain, irradiance loss, vine suitability or geodesy.

Description

A vertical canopy casts a shadow across row spacing according to sun altitude and azimuth.

A vertical canopy casts a shadow across row spacing according to sun altitude and azimuth. Only the component normal to a north–south row affects its cross-row width.

Project ideal vertical north–south row canopy shadow onto east–west row normal using supplied sun angles/dimensions; no coordinates, terrain, irradiance loss, vine suitability or geodesy.

When to use Row Shadow Width North South

Use this tool to project ideal vertical north–south row canopy shadow onto east–west row normal using supplied sun angles/dimensions; no coordinates, terrain, irradiance loss, vine suitability or geodesy.

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.

How to use Row Shadow Width North South and understand its results

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.
Enter verticalCanopyHeightM, horizontalCanopyWidthM, rowSpacingM, solarAltitudeDegrees, solarAzimuthClockwiseFromNorthDegrees using the field table and calculation rules, then run the tool.
Read northSouthRowNormalShadowWidthM, shadowBeyondAdjacentRowSpacingM. 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
verticalCanopyHeightM	Vertical canopy height m	number	Required
horizontalCanopyWidthM	Horizontal canopy width m	number	Required
rowSpacingM	Row spacing m	number	Required
solarAltitudeDegrees	Solar altitude degrees	number	Required
solarAzimuthClockwiseFromNorthDegrees	Solar azimuth clockwise from north degrees	number	Required

Use positive spacing, solar altitude in (0,90], nonnegative canopy dimensions and clockwise-from-north azimuth in degrees. Return projected width and positive excess beyond spacing.^[1]

shadow width = canopy width + height × cot(altitude) × abs(sin(azimuth))

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

Output field	Meaning	Value type
northSouthRowNormalShadowWidthM	North south row normal shadow width m	number
shadowBeyondAdjacentRowSpacingM	Shadow beyond adjacent row spacing m	number

json

{
  "input": {
    "verticalCanopyHeightM": 2,
    "horizontalCanopyWidthM": 0.5,
    "rowSpacingM": 2,
    "solarAltitudeDegrees": 45,
    "solarAzimuthClockwiseFromNorthDegrees": 90
  },
  "output": {
    "northSouthRowNormalShadowWidthM": 2.5000000000000004,
    "shadowBeyondAdjacentRowSpacingM": 0.5000000000000004
  }
}

Limitations and assumptions

Ideal geometry excludes terrain, irradiance and geographic-position calculation.

Numbers and computed results must be finite; overflow 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 Lyre System Row Width Opening: Evaluate symmetric Lyre curtain center geometry and declared horizontal foliage thickness before reporting clear top gap; not trellis engineering, arbitrary row width or canopy illumination guarantee. For a complementary task, use Cluster Zone Height Percent Canopy: Locate measured fruit-zone midpoints and spans within independent canopy bottom/top envelope, not ground-height percentage or light microclimate inference.

References

Row Shadow Width North South — tool.io

Similar or alternative tools

Lyre System Row Width Opening
Evaluate symmetric Lyre curtain center geometry and declared horizontal foliage thickness before reporting clear top gap; not trellis engineering, arbitrary row width or canopy illumination guarantee.
Cluster Zone Height Percent Canopy
Locate measured fruit-zone midpoints and spans within independent canopy bottom/top envelope, not ground-height percentage or light microclimate inference.