Results 31 to 40 of about 10,821 (160)

On the variability of total solar irradiance

open access: yes, 2012
11 pages, 9 figures, presented at Baltic Applied Astroinformatics and Space data Processing (BAASP2012)
Pelt, Jaan, Kärner, Olavi
openaire   +2 more sources

The Use of Evolutionary Algorithms in the Modelling of Diffuse Radiation in Terms of Simulating the Energy Efficiency of Photovoltaic Systems

open access: yesEnergies, 2023
In light of the rapidly growing number of photovoltaic micro-grids, the modelling of their short-term power yields based on meteorological measurements is increasing in significance.
Wiktor Olchowik   +2 more
doaj   +1 more source

Understanding the secular variability of solar irradiance: the potential of Ca II K observations

open access: yesJournal of Space Weather and Space Climate
With the increasing concern about climate change, it is important to have accurate information on the individual contributions by the potential driving agents, solar variability being one of them.
Chatzistergos Theodosios   +2 more
doaj   +1 more source

Solar Total Irradiance Monitor (TIM) [PDF]

open access: yesMetrologia, 2000
The Total Irradiance Monitor (TIM), an active-cavity solar radiometer, is to be launched in 2002 on the SORCE mission of the Earth Observing System (EOS). The relative uncertainty (1 σ) will be better than 10−4, i.e. 100 parts per million (ppm) (1 σ) with a noise level of < 1 ppm each 500 s.
G M Lawrence   +3 more
openaire   +1 more source

Solar Energy Resources and Photovoltaic Power Potential of an Underutilised Region: A Case of Alice, South Africa

open access: yesEnergies, 2022
Despite South Africa’s international recognition in solar energy investments, the country is struggling to meet its growing energy needs. In recent years, national blackouts and load shedding have been a recurring experience in the country. The high cost
Ochuko Kelvin Overen, Edson Leroy Meyer
doaj   +1 more source

Solar irradiance reconstruction over the telescopic era using a revised photospheric magnetic field model

open access: yesAstronomy & Astrophysics
The Sun is the primary source of energy for Earth and one of the main external drivers of its climate. Solar irradiance – the radiative power emitted by the Sun and received at 1 AU – varies on all observable timescales. It is measured as the total solar
Temaj D.   +4 more
doaj   +1 more source

Solar spectral irradiance variability in cycle 24: observations and models

open access: yesJournal of Space Weather and Space Climate, 2016
Utilizing the excellent stability of the Ozone Monitoring Instrument (OMI), we characterize both short-term (solar rotation) and long-term (solar cycle) changes of the solar spectral irradiance (SSI) between 265 and 500 nm during the ongoing cycle 24. We
Marchenko Sergey V.   +2 more
doaj   +1 more source

Total solar irradiance during the Holocene [PDF]

open access: yesGeophysical Research Letters, 2009
For the first time a record of total solar irradiance covering 9300 years is presented, which covers almost the entire Holocene. This reconstruction is based on a recently observationally derived relationship between total solar irradiance and the open solar magnetic field.
Steinhilber, F., Beer, J., Fröhlich, C.
openaire   +1 more source

Total Solar Irradiance and Stroke Mortality by Neural Networks Modelling

open access: yesAtmosphere, 2023
The purpose of this study was to examine the potential effect of solar energy on vascular stroke mortality in a Greek region by using neural networks analysis. The time period studied was from 1985 to 1989.
Styliani Geronikolou   +4 more
doaj   +1 more source

Analysis of the Long‐Term Stability of TSI Instruments Using Allan Deviation and the Generation of a New TSI Composite

open access: yesEarth and Space Science
The dominant external forcing to Earth's climate system is solar radiation, referred to as the solar spectral irradiance (SSI) and the total solar irradiance (TSI), which is the integral of SSI over all wavelengths.
O. Coddington   +4 more
doaj   +1 more source

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