Grape's-Eye View Model Hemispherical photograph calculation uses algorithms that compute gap fraction as function of sky direction, and compute desired canopy geometry and/or solar radiation indices. For solar radiation, rapid calculation is often accomplished using pre-calculated lookup tables of theoretical or empirical solar radiation values resolved by sky sector or position in the sunpath. Our Grape's-Eye View Model estimates grape temperature regimes using an energy balance approach. Temperature regimes are determined based on heat gain from solar radiation (shortwave input), heat exchange with the air (sensible energy flux), heat loss via evapotranspiration (latent energy flux) and radiation to the atmosphere (longwave output), and heat storage in grapes and surrounding surfaces. We currently offer custom calculation of grape temperature regime, using meteorologic records, in-field temperature sensors, hemispherical photographs, and energy balance calculations. |
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| Simplified representation of primary heating vectors. |
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