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  • Irradiance - an overview | ScienceDirect Topics
    2 5 Irradiance effects The irradiance experienced by phytoplankton in the Southern Ocean is controlled primarily by three factors: (1) the degree of ice cover (including both thickness and overlying snow cover), (2) the depth of vertical mixing, and (3) the time of year (and hence photoperiod and solar angle); factors that are discussed in detail by Smith and Sakshaug (1990)
  • Irradiance - an overview | ScienceDirect Topics
    The extraterrestrial solar irradiance is the solar radiation received at the top of Earth’s atmosphere The extraterrestrial solar irradiance varies slightly due to variations in energy emitted by the Sun and the variable distance of the Earth from the Sun in the course of the year
  • Solar uv irradiance, its variation, and its relevance to the earth
    An irradiance time series having a very uncertain absolute initial calibration may still be quite useful if its relative errors are low Accordingly, long-term measurement time series from a single instrument are preferred over time series having a similar number of non-redundant measurements by different instruments over an equivalent time frame
  • The environmental factors affecting solar photovoltaic output
    In addition, solar irradiance is not constant, and varies over the timescale of decades Gradual shifts in atmospheric conditions alter global horizontal irradiance (GHI), referred to as ‘dimming’ and ‘brightening’ phases [247] Solar irradiance declined from the 1960s to the 1980s, followed by a partial rebound post-1980s [248, 249]
  • IrradianceNet: Spatiotemporal deep learning model for satellite-derived . . .
    Solar irradiance forecasting can be traced all the way back to the late 19th century when numerical weather prediction models (NWP) were first developed (Yang et al , 2018) Since then, numerous methods have been developed to improve forecast horizons spanning from very short-term forecasts to multiple days ahead (Lorenz et al , 2009)
  • Direct normal irradiance related definitions and applications: The . . .
    Historically, the interest in accurate measurement of DNI started decades ago Early studies (e g , Linke, 1931, Linke and Ulmitz, 1940) identified the difficulty of separating the measurement of DNI from that of the diffuse irradiance in the immediate vicinity of the sun, hereafter referred to as circumsolar irradiance
  • Impact of variation of solar irradiance and temperature on the inverter . . .
    The 20kw solar power plant installed in Thailand has 2 5% drop in inverter efficiency when the ambient temperature is above 37°C [3] an algorithm is proposed to improve the efficiency of inverter by tracking the irradiance at different climate conditions [4], [5] a grid connected solar pv system simulation model with MPPT algorithm is proposed
  • Long-term changes in solar activity and irradiance
    The total solar irradiance (TSI) is the spectrally integrated radiative energy flux incident on the top of the Earth’s atmosphere at the mean Sun–Earth distance of 1 a u , and it describes the total radiative energy of the Sun received by Earth’s system
  • Clear sky solar irradiance models: A review of seventy models
    Clear sky models can be broadly classified into empirical and physical models [13] Empirical or parametric models are simplified parameterizations of the atmospheric attenuation processes that provide analyitical expressions to estimate clear sky irradiance using some atmospheric components as inputs
  • Reconstructing multi-orientation irradiance via PV panels: An isotropic . . .
    The booming photovoltaic applications put forward higher requirements on detailed irradiance data Accurate multi-orientation local solar irradiance data is required in many aspects, such as solar irradiance forecasting, daylighting and thermal insulation of buildings, and PV systems performance evaluation [[9], [10], [11], [12]]





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