Results 1 to 10 of about 29,916 (198)

Detection of clear sky instants from high frequencies pyranometric measurements of global horizontal irradiance [PDF]

open access: yesE3S Web of Conferences, 2021
Solar resource assessment by clear sky models is of great importance in the solar energy field: verifying the performance of photovoltaic systems during stable conditions, clouds effects evaluation, the determination of geographical areas where ...
El Alani Omaima   +3 more
doaj   +3 more sources

Calibration and Validation of Global Horizontal Irradiance Clear Sky Models against McClear Clear Sky Model in Morocco

open access: yesApplied Sciences, 2022
This study calibrated and compared the capabilities of hourly global horizontal irradiance (GHI) clear sky models for six Moroccan locations, using the McClear clear sky model as a reference.
Abderrahmane Mendyl   +3 more
doaj   +1 more source

All-sky assimilation of infrared radiances sensitive to mid- and upper-tropospheric moisture and cloud [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
All-sky assimilation of infrared (IR) radiances has not yet become operational at any weather forecasting centre, but it promises to bring new observations in sensitive areas and avoid the need for cloud detection.
A. J. Geer, S. Migliorini, M. Matricardi
doaj   +1 more source

A total sky cloud detection method using real clear sky background [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
The brightness distribution of sky background is usually non-uniform, which creates many problems for traditional cloud detection methods, including the failure of thin cloud detection in total sky images and significantly reducing retrieval accuracy in ...
J. Yang   +7 more
doaj   +1 more source

Solar Forecasts Based on the Clear Sky Index or the Clearness Index: Which Is Better?

open access: yesSolar, 2022
In the realm of solar forecasting, it is common to use a clear sky model output to deseasonalise the solar irradiance time series needed to build the forecasting models.
Philippe Lauret   +3 more
doaj   +1 more source

A Method for Clear‐Sky Identification and Long‐Term Trends Assessment Using Daily Surface Solar Radiation Records

open access: yesEarth and Space Science, 2022
Time series of clear‐sky irradiance are fundamental for the understanding of changes in the Earth Radiation budget, since they allow to examine radiative processes in the cloud‐free atmosphere.
Lucas Ferreira Correa   +3 more
doaj   +1 more source

Mapping Crop Leaf Area Index and Canopy Chlorophyll Content Using UAV Multispectral Imagery: Impacts of Illuminations and Distribution of Input Variables

open access: yesRemote Sensing, 2023
Leaf area index (LAI) and canopy chlorophyll content (CCC) are important indicators that describe the growth status and nitrogen deficiencies of crops.
Wenjuan Li   +6 more
doaj   +1 more source

Comparative Investigation of Daylight Glare Probability (DGP) Comfort Classes in Clear Sky Condition

open access: yesJournal of Daylighting, 2021
Glare is considered one of the most important variables to reach visual comfort and visual quality. It represents one of the fundamental barriers for an effective use of daylighting in buildings.
Juan Manuel Monteoliva   +2 more
doaj   +1 more source

Clear-Sky Surface Solar Radiation and the Radiative Effect of Aerosol and Water Vapor Based on Simulations and Satellite Observations over Northern China

open access: yesRemote Sensing, 2020
The distribution and trend of clear-sky surface solar radiation (SSR) and the quantitative effects of aerosol and water vapor are investigated in northern China during 2001–2015 using radiation simulations and satellite observations.
Guang Zhang, Yingying Ma
doaj   +1 more source

Development and Testing of a Clear-Sky Data Selection Algorithm for FY-3C/D Microwave Temperature Sounder-2

open access: yesRemote Sensing, 2020
The Fengyun (FY)-3C/D microwave temperature sounder-2 (MWTS-2) is similar to the Advanced Microwave Sounding Unit-A (AMSU-A), except it lacks two window channels located at 23.8 GHz and 31.4 GHz.
Zeyi Niu, Xiaolei Zou, Peter Sawin Ray
doaj   +1 more source

Home - About - Disclaimer - Privacy