TY - CHAP U1 - Konferenzveröffentlichung A1 - Barry, James A1 - Meilinger, Stefanie A1 - Pfeilsticker, Klaus A1 - Gödde, Felix A1 - Mayer, Bernhard A1 - Deneke, Hartwig A1 - Witthuhn, Jonas A1 - Scheck, Leonhard A1 - Schroedter-Homscheidt, Marion A1 - Hofbauer, Philipp A1 - Struck, Matthias T1 - Irradiance and cloud optical properties from photovoltaic power data under variable atmospheric conditions T2 - EMS Annual Meeting 2022, 4-9 September 2022, Bonn, Germany N2 - The electricity grid of the future will be built on renewable energy sources, which are highly variable and dependent on atmospheric conditions. In power grids with an increasingly high penetration of solar photovoltaics (PV), an accurate knowledge of the incoming solar irradiance is indispensable for grid operation and planning, and reliable irradiance forecasts are thus invaluable for energy system operators. In order to better characterise shortwave solar radiation in time and space, data from PV systems themselves can be used, since the measured power provides information about both irradiance and the optical properties of the atmosphere, in particular the cloud optical depth (COD). Indeed, in the European context with highly variable cloud cover, the cloud fraction and COD are important parameters in determining the irradiance, whereas aerosol effects are only of secondary importance. UN - https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-63047 U6 - https://doi.org/10.5194/ems2022-713 DO - https://doi.org/10.5194/ems2022-713 VL - 19 PB - Copernicus GmbH ER -