Mireille Lefèvre
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View article: Occultation-based Size and Shape of (269) Justitia
Occultation-based Size and Shape of (269) Justitia Open
We present results from an occultation of a star by the asteroid (269) Justitia on 2023 August 31 UT using a deployment of 34 stations. Of the deployed stations, 29 were successful in collecting useful data and 19 recorded a positive occul…
View article: The new CAMS Radiation Service v4.5 – method improvements with a special focus on solar energy user needs
The new CAMS Radiation Service v4.5 – method improvements with a special focus on solar energy user needs Open
The Copernicus Atmosphere Monitoring Service (CAMS) provides open data access to solar irradiances through its CAMS Radiation Service (CRS). Data is accessible via both the CAMS Atmospheric Data Store and user-specific Python libraries as …
View article: Variability class dependent evaluation of the CAMS Solar Radiation Service
Variability class dependent evaluation of the CAMS Solar Radiation Service Open
<p>The Copernicus Atmospheric Monitoring Service (CAMS) offers Solar radiation services (CRS) providing information on surface solar irradiance (SSI). The service is currently derived from Meteosat Second Generation (MSG) and the ser…
View article: CAMS Solar radiation products: Ground measurements catalogue, December 2021.
CAMS Solar radiation products: Ground measurements catalogue, December 2021. Open
The Copernicus Atmosphere Monitoring Service (CAMS) provides an updated ground measurements catalogue every year. It provides the list of stations whose data is being collected for the CAMS Radiation Service Evaluation and Quality Assuranc…
View article: Preparing the CAMS Radiation Service for MTG
Preparing the CAMS Radiation Service for MTG Open
<p>The Copernicus Atmospheric Monitoring Service (CAMS) provides a surface solar irradiance service which is currently derived from Meteosat Second Generation (MSG). The service combines satellite data products with numerical model o…
View article: CAMS Solar radiation products Regular Validation Report, Issue #32, Sept.-Nov. 2020
CAMS Solar radiation products Regular Validation Report, Issue #32, Sept.-Nov. 2020 Open
CAMS72_2018SC2_D72.1.3.1-2021Q2_RAD_validation_report_SON2020
View article: Applying the Heliosat-4 method to three different cloud properties databases for the estimation of the surface downwelling shortwave irradiance
Applying the Heliosat-4 method to three different cloud properties databases for the estimation of the surface downwelling shortwave irradiance Open
The Heliosat-4 method estimates the surface downwelling shortwave radiation (DSSR) received at ground level in all sky conditions. It is composed of two parts: the McClear model calculating the irradiance under cloud-free conditions and th…
View article: Verifying the spatial consistency of the CAMS Radiation Service and HelioClim-3 satellite-derived databases of solar radiation using a dense network of measuring stations: the case of The Netherlands
Verifying the spatial consistency of the CAMS Radiation Service and HelioClim-3 satellite-derived databases of solar radiation using a dense network of measuring stations: the case of The Netherlands Open
The present work deals with two well-known databases of hourly mean of solar irradiance that are derived from satellite imagery: the CAMS Radiation Service version 3.2, abbreviated as CAMS-Rad and part of the Copernicus Atmosphere Monitori…
View article: Improving the McClear model estimating the downwelling solar radiation at ground level in cloud-free conditions – McClear‑v3
Improving the McClear model estimating the downwelling solar radiation at ground level in cloud-free conditions – McClear‑v3 Open
The fast McClear clear-sky model estimates the downwelling shortwave direct and diffuse irradiances
\nreceived at ground level under cloud-free conditions. Several improvements are presented. They focus on
\nthe modeling of changes in irra…
View article: Downwelling surface solar irradiance in the tropical Atlantic Ocean: a comparison of re-analyses and satellite-derived data sets to PIRATA measurements
Downwelling surface solar irradiance in the tropical Atlantic Ocean: a comparison of re-analyses and satellite-derived data sets to PIRATA measurements Open
This paper assesses the merits and drawbacks of several data sets of solar downwelling radiation received at the horizontal surface of the tropical Atlantic Ocean where the magnitude of this radiation and its spatial and temporal variabili…
View article: Assessment of CAMS Radiation Service and HelioClim-3 satellite-derived databases against ground-based measurements in The Netherlands
Assessment of CAMS Radiation Service and HelioClim-3 satellite-derived databases against ground-based measurements in The Netherlands Open
Satellite-derived databases of the surface solar irradiance (SSI) are common tools in solar energy and assessing their performance by comparison with in situ measurements is a common activity. The present work focuses on two databases: the…
View article: CAMS-72 Solar radiation products, D72.2.3.1 Regular Validation Report, S-O-N 2017
CAMS-72 Solar radiation products, D72.2.3.1 Regular Validation Report, S-O-N 2017 Open
D72.2.3.1 Regular Validation Report, S-O-N 2017
View article: Estimating downwelling solar irradiance at the surface of the tropical Atlantic Ocean: A comparison of PIRATA measurements against several re-analyses and satellite-derived data sets
Estimating downwelling solar irradiance at the surface of the tropical Atlantic Ocean: A comparison of PIRATA measurements against several re-analyses and satellite-derived data sets Open
This paper assesses the merits and drawbacks of several data sets of the solar downwelling radiation received at the surface of the tropical Atlantic Ocean where the field of solar radiation is hardly known. The data sets are compared to q…
View article: Comparison of several databases of downward solar radiation data at ocean surface with PIRATA measurements
Comparison of several databases of downward solar radiation data at ocean surface with PIRATA measurements Open
International audience
View article: Fast radiative transfer parameterisation for assessing the surface solar irradiance: The Heliosat‑4 method
Fast radiative transfer parameterisation for assessing the surface solar irradiance: The Heliosat‑4 method Open
The new Heliosat-4 method estimates the downwelling shortwave irradiance received at ground level in all
\nsky conditions. It provides the global irradiance and its direct and diffuse components on a horizontal plane
\nand the direct irrad…
View article: The Copernicus Atmosphere Monitoring Service (CAMS) Radiation Service in a nutshell
The Copernicus Atmosphere Monitoring Service (CAMS) Radiation Service in a nutshell Open
1. The Copernicus Programme and its Atmosphere Monitoring Service (CAMS) Copernicus, previously known as GMES (Global Monitoring for Environment and Security), is the European Programme for the establishment of a European capacity for Eart…
View article: Validation of HelioClim-3 Version 4, HelioClim-3 Version 5 and MACC-RAD Using 14 BSRN Stations
Validation of HelioClim-3 Version 4, HelioClim-3 Version 5 and MACC-RAD Using 14 BSRN Stations Open
This communication presents the results of a comparison of three satellite-derived databases covering Africa, Europe, Middle East and part of South America, against corresponding 15 min irradiations of very high quality measured by fourtee…
View article: An In-situ Experiment of Fault Reactivation in a Shaly Formation, Massif Central, France
An In-situ Experiment of Fault Reactivation in a Shaly Formation, Massif Central, France Open
International audience
View article: Validation of the McClear clear-sky model in desert conditions with three stations in Israel
Validation of the McClear clear-sky model in desert conditions with three stations in Israel Open
The new McClear clear-sky model, a fast model based on a radiative transfer solver, exploits the atmospheric properties provided by the EU-funded Copernicus Atmosphere Monitoring Service (CAMS) to estimate the solar direct and global irrad…