3.2.1.3
Tweaked shade calc Updated About and FAQ sections
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fraxle
+11
-10
@@ -131,20 +131,21 @@ export const POLLEN_TYPES = {
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// label - short display name
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// note - shown in column header tooltip to flag modified calculation
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// shade - per-environment microclimate inputs for the Shade air-temp
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// column (see calcShadeAirTemp in physics.js):
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// offset base air-temp delta sitting in this env's shade (-C)
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// column (see calcShadeAirTemp in physics.js). The env air-temp
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// shift is NOT here - it comes from taOffset via the shared
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// TaEnv baseline. This block only carries local sun-trap effects:
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// shelter 0-1 wind shelter (high = enclosed, calm pocket)
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// sun 0-~1.2 how sun-baked the surroundings are
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// type short label of the typical shade for the tooltip
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export const UTCI_ENVIRONMENTS = {
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open: { shortLabel: null, label: 'Grass / Open Field', dirFactor: 1.00, difFactor: 1.00, globFactor: 1.00, taOffset: 0.0, note: null, shade: { offset: 0.5, shelter: 0.45, sun: 0.50, type: 'hedge / scattered trees' } },
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urban: { shortLabel: 'City', label: 'Town / City', dirFactor: 0.70, difFactor: 0.75, globFactor: 0.82, taOffset: 2.5, note: 'Urban heat island estimate - UHI raises air temp ~2–3 °C, building canyons reduce direct and diffuse solar load, reflections from concrete and glass partially offset sky-view reduction', shade: { offset: 1.5, shelter: 0.75, sun: 0.85, type: 'building shadow' } },
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beach: { shortLabel: 'Beach', label: 'Beach / Lakeside', dirFactor: 1.12, difFactor: 1.06, globFactor: 1.10, taOffset: 0.0, note: 'Reflected radiation from water and sand surfaces increases effective solar load - no shade, higher UV dose', shade: { offset: 0.5, shelter: 0.25, sun: 0.95, type: 'beach umbrella' } },
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river: { shortLabel: 'Riverbank', label: 'River / Riverbank', dirFactor: 0.50, difFactor: 0.60, globFactor: 0.55, taOffset: -2.5, note: 'Shaded riverbank estimate - canopy and valley walls reduce direct sun, evaporative cooling from water surface lowers apparent air temp', shade: { offset: -1.5, shelter: 0.55, sun: 0.40, type: 'trees & bushes' } },
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forest: { shortLabel: 'Forest', label: 'Forest / Woodland', dirFactor: 0.15, difFactor: 0.40, globFactor: 0.20, taOffset: -2.0, note: 'Canopy-shaded estimate - direct radiation reduced 85%, air temp adjusted for evapotranspiration cooling', shade: { offset: -1.0, shelter: 0.80, sun: 0.20, type: 'tree canopy' } },
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openwater: { shortLabel: 'Open Water', label: 'Open Water', dirFactor: 1.14, difFactor: 1.08, globFactor: 1.12, taOffset: 0.0, note: 'Open water - full solar exposure with additional radiation reflected from the water surface, no shade or shelter, no ground heat contribution', shade: { offset: 0.0, shelter: 0.10, sun: 0.25, type: 'boat panels' } },
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alpine: { shortLabel: 'Alpine', label: 'High Altitude / Alpine', dirFactor: 1.15, difFactor: 1.10, globFactor: 1.12, taOffset: -1.0, note: 'Alpine estimate assuming approx. 2000 m elevation - radiation enhanced ~15% through thinner atmosphere, adjusted for exposed ridge conditions', shade: { offset: -0.5, shelter: 0.35, sun: 0.40, type: 'trees & rocks' } },
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desert: { shortLabel: 'Desert', label: 'Desert / Arid', dirFactor: 1.22, difFactor: 1.10, globFactor: 1.18, taOffset: 3.5, note: 'Extreme radiation load from high albedo sand and bare ground - ground-level heat significantly raises effective felt temperature', shade: { offset: 2.5, shelter: 0.40, sun: 1.00, type: 'cactus / rockface' } },
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open: { shortLabel: null, label: 'Grass / Open Field', dirFactor: 1.00, difFactor: 1.00, globFactor: 1.00, taOffset: 0.0, note: null, shade: { shelter: 0.45, sun: 0.50, type: 'hedge / scattered trees' } },
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urban: { shortLabel: 'City', label: 'Town / City', dirFactor: 0.70, difFactor: 0.75, globFactor: 0.82, taOffset: 2.5, note: 'Urban heat island estimate - UHI raises air temp ~2–3 °C, building canyons reduce direct and diffuse solar load, reflections from concrete and glass partially offset sky-view reduction', shade: { shelter: 0.75, sun: 0.85, type: 'building shadow' } },
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beach: { shortLabel: 'Beach', label: 'Beach / Lakeside', dirFactor: 1.12, difFactor: 1.06, globFactor: 1.10, taOffset: 0.0, note: 'Reflected radiation from water and sand surfaces increases effective solar load - no shade, higher UV dose', shade: { shelter: 0.25, sun: 0.95, type: 'beach umbrella' } },
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river: { shortLabel: 'Riverbank', label: 'River / Riverbank', dirFactor: 0.50, difFactor: 0.60, globFactor: 0.55, taOffset: -2.5, note: 'Shaded riverbank estimate - canopy and valley walls reduce direct sun, evaporative cooling from water surface lowers apparent air temp', shade: { shelter: 0.55, sun: 0.40, type: 'trees & bushes' } },
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forest: { shortLabel: 'Forest', label: 'Forest / Woodland', dirFactor: 0.15, difFactor: 0.40, globFactor: 0.20, taOffset: -2.0, note: 'Canopy-shaded estimate - direct radiation reduced 85%, air temp adjusted for evapotranspiration cooling', shade: { shelter: 0.80, sun: 0.20, type: 'tree canopy' } },
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openwater: { shortLabel: 'Open Water', label: 'Open Water', dirFactor: 1.14, difFactor: 1.08, globFactor: 1.12, taOffset: 0.0, note: 'Open water - full solar exposure with additional radiation reflected from the water surface, no shade or shelter, no ground heat contribution', shade: { shelter: 0.10, sun: 0.25, type: 'boat panels' } },
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alpine: { shortLabel: 'Alpine', label: 'High Altitude / Alpine', dirFactor: 1.15, difFactor: 1.10, globFactor: 1.12, taOffset: -1.0, note: 'Alpine estimate assuming approx. 2000 m elevation - radiation enhanced ~15% through thinner atmosphere, adjusted for exposed ridge conditions', shade: { shelter: 0.35, sun: 0.40, type: 'trees & rocks' } },
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desert: { shortLabel: 'Desert', label: 'Desert / Arid', dirFactor: 1.22, difFactor: 1.10, globFactor: 1.18, taOffset: 3.5, note: 'Extreme radiation load from high albedo sand and bare ground - ground-level heat significantly raises effective felt temperature', shade: { shelter: 0.40, sun: 1.00, type: 'cactus / rockface' } },
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};
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// Maps OUTDOORS_VARIANTS keys to a default UTCI_ENVIRONMENTS key.
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