Zobrazeno 1 - 10
of 520
pro vyhledávání: '"Lucien Wald"'
Publikováno v:
Meteorologische Zeitschrift, Vol 33, Iss 2, Pp 117-129 (2024)
This study provides empirical relationships between photosynthetically active radiation (PAR) and broadband clear‑sky indices at ground level for both the PAR global irradiance and its direct component. Once multiplied by the irradiance in clear‑
Externí odkaz:
https://doaj.org/article/c0b039e064404a6b980c0dac19839966
Publikováno v:
Remote Sensing, Vol 16, Iss 19, p 3718 (2024)
Several studies proposed relationships linking irradiances in the photosynthetically active radiation (PAR) range and broadband irradiances. A previous study published in 2024 by the same authors proposes a linear model relating clear-sky indices in
Externí odkaz:
https://doaj.org/article/0a31beb5c9754b2181bfbb02a8497cef
Publikováno v:
International Journal of Digital Earth, Vol 13, Iss 2, Pp 253-261 (2020)
Essential Variables are defined as a minimal set of variables that explain the state of the system. They are crucial for predicting its developments, and support metrics that measure its evolution. The variables should be relevant to meet requirement
Externí odkaz:
https://doaj.org/article/47f9256428d3419cadbe9537b45ce6e3
Autor:
Benoit Gschwind, Lucien Wald, Philippe Blanc, Mireille Lefèvre, Marion Schroedter-Homscheidt, Antti Arola
Publikováno v:
Meteorologische Zeitschrift, Vol 28, Iss 2, Pp 147-163 (2019)
The fast McClear clear-sky model estimates the downwelling shortwave direct and diffuse irradiances received at ground level under cloud-free conditions. Several improvements are presented. They focus on the modeling of changes in irradiances with th
Externí odkaz:
https://doaj.org/article/7aeb281221694beabe47fc8459e88c70
Autor:
Isabelle Savoye, Catherine M Olsen, David C Whiteman, Anne Bijon, Lucien Wald, Laureen Dartois, Françoise Clavel-Chapelon, Marie-Christine Boutron-Ruault, Marina Kvaskoff
Publikováno v:
Journal of Epidemiology, Vol 28, Iss 1, Pp 27-33 (2018)
Background: While ultraviolet (UV) radiation exposure is a recognized risk factor for skin cancer, associations are complex and few studies have allowed a direct comparison of exposure profiles associated with cutaneous melanoma, basal-cell carcinoma
Externí odkaz:
https://doaj.org/article/be1136a984f14505bee6bb0f8e103b4f
Autor:
Zhipeng Qu, Armel Oumbe, Philippe Blanc, Bella Espinar, Gerhard Gesell, Benoît Gschwind, Lars Klüser, Mireille Lefèvre, Laurent Saboret, Marion Schroedter-Homscheidt, Lucien Wald
Publikováno v:
Meteorologische Zeitschrift, Vol 26, Iss 1, Pp 33-57 (2017)
The new Heliosat‑4 method estimates the downwelling shortwave irradiance received at ground level in all sky conditions. It provides the global irradiance and its direct and diffuse components on a horizontal plane and the direct irradiance for a p
Externí odkaz:
https://doaj.org/article/ca4ca73a96414870b75f55bda08ad28d
Autor:
William Wandji Nyamsi, Philippe Blanc, Dominique Dumortier, Ruben Mouangue, Antti Arola, Lucien Wald
Publikováno v:
Atmosphere, Vol 12, Iss 5, p 643 (2021)
Natural daylight is recognized as an important variable in the energy performance of buildings. A method that estimates the global illuminance received on a horizontal surface at ground level and its direct component at normal incidence under cloudle
Externí odkaz:
https://doaj.org/article/f535efe4caa7429d93390fd7bbd38a72
Autor:
Yehia Eissa, Mohamed Korany, Youva Aoun, Mohamed Boraiy, Magdy M. Abdel Wahab, Stephane C. Alfaro, Philippe Blanc, Mossad El-Metwally, Hosni Ghedira, Katja Hungershoefer, Lucien Wald
Publikováno v:
Remote Sensing, Vol 7, Iss 7, Pp 9269-9291 (2015)
HelioClim-3 (HC3) is a database providing time series of the surface downwelling solar irradiance that are computed from images of the Meteosat satellites. This paper presents the validation results of the hourly global horizontal irradiance (GHI) an
Externí odkaz:
https://doaj.org/article/657f3156f0bf459d8dd6713c11f321f1
Publikováno v:
Meteorologische Zeitschrift, Vol 23, Iss 5, Pp 547-556 (2014)
The k$k$-distribution method and the correlated-k$k$ approximation of Kato et al. (1999) is a smart approach originally designed for broadband calculations of the solar radiation at ground level by dividing the solar spectrum in 32 spectral bands. Th
Externí odkaz:
https://doaj.org/article/7cd28c5aa8404fd0a2b1ce28c0d871d3
Autor:
Mireille Lefevre, Philippe Blanc, Bella Espinar, Benoit Gschwind, Lionel Menard, Thierry Ranchin, Lucien Wald, Laurent Saboret, Claire Thomas, Etienne Wey
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 7, Iss 5, Pp 1745-1753 (2014)
The HelioClim-1 database contains daily values of the solar radiation reaching the ground. This GEOSS (Global Earth Observation System of Systems) Data Collection of Open Resources for Everyone (Data-CORE) covers Europe, Africa and the Atlantic Ocean
Externí odkaz:
https://doaj.org/article/a3d5de2803a2403ba7e0e2ab02233656