Precision horticultural climate engineering parameters, solar Daily Light Integral (DLI) curves, seasonal thermal screen deployment strategy, and heating/cooling load calculations for Al-Kharj / Riyadh Oasis, Saudi Arabia (Hyper-Arid Desert (BWh)).
In Al-Kharj / Riyadh Oasis, Saudi Arabia, natural solar Daily Light Integral transitions from 25-30 mol/m²/day during winter solstice to 60-70 mol/m²/day at summer peak. For commercial crops like Protected Tomato, Cucumber, Leafy Greens, target canopy DLI requires dynamic screen management to avoid photoinhibition during midday radiation spikes exceeding 850 W/m².
Screen Specification: Heavy Duty Sandstorm-Resistant Automated External Screen
Primary Cooling Strategy: Seawater/Brackish Desalination Pad-and-Fan + Mist
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: Protected Tomato, Cucumber, Leafy Greens.