Precision horticultural climate engineering parameters, solar Daily Light Integral (DLI) curves, seasonal thermal screen deployment strategy, and heating/cooling load calculations for Brittany (Finistère), France (Hyper-Maritime Cool Summer (Cfb)).
In Brittany (Finistère), France, natural solar Daily Light Integral transitions from 7-11 mol/m²/day during winter solstice to 32-38 mol/m²/day at summer peak. For commercial crops like Premium Cluster Tomato, Shallots, Strawberry, target canopy DLI requires dynamic screen management to avoid photoinhibition during midday radiation spikes exceeding 850 W/m².
Screen Specification: Energy Screen (XLS 16 F) for Mild Winter Retention
Primary Cooling Strategy: Passive Marine Breeze Ventilation
Maintaining positive day-night temperature differential (DIF) and nighttime dehumidification minimizes condensation on cold structural glass surfaces, suppressing Botrytis and powdery mildew spore viability.
Major protected cropping varieties grown at scale in this regional cluster: Premium Cluster Tomato, Shallots, Strawberry.