Design of Photosynthetically Active Radiation Sensor
نویسندگان
چکیده
منابع مشابه
Photosynthetically active radiation: measurements and modelling
Photosynthetically-active radiation is a necessary input in applications dealing with plant physiology, biomass production and natural illumination in greenhouses. Unfortunately, a worldwide routine network for the measurement of photosynthetically-active radiation is not yet established and it is often calculated as a constant ratio of the broadband solar radiation. This ratio is affected by m...
متن کاملA 5-year study of a new kind of photosynthetically active radiation sensor.
Light-emitting diodes (LED), which are designed as quasi-monochromatic light sources, can also function as spectrally selective photodiodes. This provides a new kind of photosynthetically active radiation (PAR) sensor that is inexpensive and has much better stability over time than interference filters used in some PAR sensors. The action spectrum of photosynthesis in green plants has principle...
متن کاملSimultaneous Assessment of Photosynthetically Active and Ultraviolet Solar Radiation
A new dosimetric package for assessing solar radiation affecting photosynthesis in the visible and ultraviolet wavebands in plant canopies has been developed and tested. The package consists of several detectors sensitive to various wavebands between 290 and 700 nm. For photosynthetically active radiation (PAR), the dosimeter was calibrated for exposures in terms of photosynthetically active ph...
متن کاملEstimation of photosynthetically active radiation under cloudy conditions
Clouds are the largest modulators of the solar radiative flux reaching the Earth’s surface. The amount and type of cloud cover prevailing at a given time and location largely determines the amount and type of solar radiation received at the Earth’s surface. This cloud radiative forcing is different for the different solar spectral bands. In this work, we analysed the influence of cloud radiativ...
متن کاملValidation of an Empirical Model for Photosynthetically Active Radiation
Knowledge of the photosynthetically active radiation is necessary in different applications dealing with plant physiology, biomass production and natural illumination in greenhouses. Nevertheless, as a result of the absence of widespread measurements of this radiometric flux, it is often calculated as a constant ratio of the broadband solar radiation. This ratio is affected by many parameters. ...
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ژورنال
عنوان ژورنال: Examines in Physical Medicine & Rehabilitation
سال: 2018
ISSN: 2637-7934
DOI: 10.31031/epmr.2018.01.000521