Results 21 to 30 of about 10,228 (279)
Seasonal Characteristic of Sky Conditions based on Clearness Index on Aceh Besar
Buletin GAW Bariri, 2022 Knowledge of the sky conditions in particular location is a fundamental to studies about climate and has applications for meteorology, industry, agriculture, architecture, engineering, studies of water resources development and solar energy conversion system.
Dea Rimasilana, Muhammad Irfan Islami
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Use of a Clear Sky Index to Evaluate Solar and Cloud NWP Forecasts [PDF]
, 2021 <p>Forecasting cloud accurately is still a challenge in numerical weather prediction (NWP) models. Detailed qualitative evaluation of such forecasts is needed in order to improve the forecasts. Cloud cover is often used for the evaluation but it is not a good metric due to inconsistency in methods for assessing the cloud cover.
Emily Gleeson, Kristian Pagh Nielsen
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Optimizing UV Index determination from broadband irradiances [PDF]
Geoscientific Model Development, 2018 A study was undertaken to improve upon the prognosticative capability of Environment and Climate Change Canada's (ECCC) UV Index forecast model. An aspect of that work, and the topic of this communication, was to investigate the use of the four UV ...
K. A. Tereszchuk +3 more
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Rethinking satellite-based solar irradiance modelling: The SOLIS clear-sky module [PDF]
, 2022 S.160-174Accurate solar irradiance data are not only of particular importance for the assessment of the radiative forcing of the climate system, but also absolutely necessary for efficient planning and operation of solar energy systems.
Schroedter-Homscheidt, M. +11 more
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Regional characteristics of cloudiness in Serbia during the period 1991–2017
Meteorological Applications, 2023 Monthly climate data of days with clear and cloudy skies at 38 stations (1991–2017) and daily visual observations of total cloud amounts (TCA) available at six principal stations (1992–2017) were used to investigate regional, subregional, and temporal ...
Katarina Veljović Koračin +2 more
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Energies, 2022 Solar radiation is by nature intermittent and influenced by many factors such as latitude, season and atmospheric conditions. As a consequence, the growing penetration of Photovoltaic (PV) systems into the electricity network implies significant problems
Alessandro Niccolai +4 more
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Polarization singularities in the clear sky [PDF]
, 2004 Ideas from singularity theory provide a simple account of the pattern of polarization directions in daylight. The singularities (two near the Sun and two near the anti-Sun) are points in the sky where the polarization line pattern has index +1/2 and the ...
R L Lee +11 more
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Modeling combined global, beam, and diffuse clear-sky indices with Markov-chain mixture distribution models [PDF]
, 2021 This study uses the N-state Markov-chain mixture distribution model and the multiple-component N-state Markov-chain mixture distribution model to simulate global, beam, and diffuse horizontal clear-sky index.
J. Widén +3 more
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The clear‐sky index to separate clear‐sky from cloudy‐sky situations in climate research
Geophysical Research Letters, 2000 Accurate surface radiation fluxes are required to quantify atmosphere‐surface energy exchanges. In climate research, detailed investigations of the influence of diverse atmospheric conditions on radiative fluxes ask for a well‐defined distinction between clear‐sky and cloudy‐sky situations.
Christoph Marty, Rolf Philipona
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"Pixel-scale composite top-of-the-atmosphere clear-sky reflectances for Meteosat-7 visible data" [PDF]
, 2021 A new method to estimate composite top of the atmosphere (TOA) visible clear-sky reflectances for wide narrow band geostationary satellites such as the Meteosat constellation is presented.
Gonzalez, L. +4 more
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