Results 1 to 10 of about 215,073 (179)

Cloud Cover Diurnal Cycles in Satellite Data and Regional Climate Model Simulations

open access: yesMeteorologische Zeitschrift, 2012
The amount and diurnal cycle of cloud cover play an important role in the energy and water cycle of the earth-atmosphere system and influence the radiation budget of the earth. Due to its importance and the challenging nature of its quantification, cloud
Uwe Pfeifroth   +2 more
doaj   +2 more sources

Estimating Layered Cloud Cover from Geostationary Satellite Radiometric Measurements: A Novel Method and Its Application

open access: yesRemote Sensing, 2022
Layered cloud cover (LCC), that is, cloud cover at different levels, is crucial for estimating cloud radiative effects and modeling climate change. However, accurate LCC characterization using passive satellite measurements is challenging because of the ...
Zhonghui Tan   +5 more
doaj   +1 more source

A Cloud‐Free Approach to Modeling Daily Downwelling Longwave Irradiance at Global Scale

open access: yesGeophysical Research Letters, 2023
Parametric modeling of downwelling longwave irradiance under all‐sky conditions (LW↓) typically involves “correcting” a clear‐ (or non‐overcast) sky model estimate using solar‐irradiance‐based proxies of cloud cover in lieu of actual cloud cover given ...
Ryan M. Bright, Stephanie Eisner
doaj   +1 more source

Generation of Anisotropic Cloud Cover

open access: yesMìkrosistemi, Elektronìka ta Akustika, 2023
This paper introduces an advanced mathematical model for generating and analyzing cloud cover images, specifically designed to enhance photovoltaic (PV) partial shading studies.
Vadym Ihorovych Martyniuk   +1 more
doaj   +1 more source

Photolysis rates in correlated overlapping cloud fields: Cloud-J 7.3c [PDF]

open access: yesGeoscientific Model Development, 2015
A new approach for modeling photolysis rates (J values) in atmospheres with fractional cloud cover has been developed and is implemented as Cloud-J – a multi-scattering eight-stream radiative transfer model for solar radiation based on Fast-J.
M. J. Prather
doaj   +1 more source

STAR NDSI collection: a cloud-free MODIS NDSI dataset (2001–2020) for China [PDF]

open access: yesEarth System Science Data, 2022
Snow dynamics are crucial in ecosystems, affecting radiation balance, hydrological cycles, biodiversity, and human activities. Snow areas with notably diverse characteristics are extensively distributed in China, mainly including Northern Xinjiang (NX ...
Y. Jing, X. Li, H. Shen, H. Shen
doaj   +1 more source

Model estimation for solar generation forecasting using cloud cover data [PDF]

open access: yesSolar Energy, 2017
This paper presents a parametric model approach to address the problem of photovoltaic generation forecasting in a scenario where measurements of meteorological variables, i.e., solar irradiance and temperature, are not available at the plant site. This scenario is relevant to electricity network operation, when a large number of PV plants are deployed
PEPE, DANIELE   +2 more
openaire   +4 more sources

Important non-local effects of deforestation on cloud cover changes in CMIP6 models

open access: yesEnvironmental Research Letters, 2023
Recent satellite and in-situ measurements show that forests can influence regional and global cloud cover through biophysical processes. However, forest’s possible local and non-local impacts on clouds remain unclear.
Wenjian Hua   +4 more
doaj   +1 more source

Tropical variability simulated in ICON-A with a spectral cumulus parameterization [PDF]

open access: yes, 2020
We implemented a spectral cumulus parameterization based on a cloud-resolving model (SC scheme) in the icosahedral nonhydrostatic atmospheric model (ICON-A).
Baba, Y., Giorgetta, M.
core   +2 more sources

Modelling Cloud Cover Climatology over Tropical Climates in Ghana

open access: yesAtmosphere, 2022
Clouds play a crucial role in Earth’s climate system by modulating radiation fluxes via reflection and scattering, and thus the slightest variation in their spatial coverage significantly alters the climate response. Until now, due to the sparse distribution of advanced observation stations, large uncertainties in cloud climatology remain for many ...
Felicia Dogbey   +4 more
openaire   +3 more sources

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