{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T21:36:43Z","timestamp":1764020203934,"version":"build-2065373602"},"reference-count":40,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2018,5,30]],"date-time":"2018-05-30T00:00:00Z","timestamp":1527638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>A model based on the known high correlation between photosynthetically active radiation (PAR) and global horizontal irradiance (GHI) was implemented to estimate PAR from GHI measurements in this present study. The model has been developed using satellite-derived GHI and PAR estimations. Both variables can be estimated using Kato bands, provided by Satellite Application Facility on Climate Monitoring (CM-SAF), and its ratio may be used as the variable of interest in order to obtain the model. The study area, which was located in mainland Spain, has been split by cluster analysis into regions with similar behavior, according to this ratio. In each of these regions, a regression model estimating PAR from GHI has been developed. According to the analysis, two regions are distinguished in the study area. These regions belong to the two climates dominating the territory: an Oceanic climate on the northern edge; and a Mediterranean climate with hot summer in the rest of the study area. The models obtained for each region have been checked against the ground measurements, providing correlograms with determination coefficients higher than 0.99.<\/jats:p>","DOI":"10.3390\/rs10060849","type":"journal-article","created":{"date-parts":[[2018,5,30]],"date-time":"2018-05-30T04:03:24Z","timestamp":1527653004000},"page":"849","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Modeling Photosynthetically Active Radiation from Satellite-Derived Estimations over Mainland Spain"],"prefix":"10.3390","volume":"10","author":[{"given":"Jose","family":"Vindel","sequence":"first","affiliation":[{"name":"Renewable Energy Division\u2013CIEMAT, Madrid 28040, Spain"}]},{"given":"Rita","family":"Valenzuela","sequence":"additional","affiliation":[{"name":"Renewable Energy Division\u2013CIEMAT, Madrid 28040, Spain"}]},{"given":"Ana","family":"Navarro","sequence":"additional","affiliation":[{"name":"Renewable Energy Division\u2013CIEMAT, Madrid 28040, Spain"}]},{"given":"Luis","family":"Zarzalejo","sequence":"additional","affiliation":[{"name":"Renewable Energy Division\u2013CIEMAT, Madrid 28040, Spain"}]},{"given":"Abel","family":"Paz-Gallardo","sequence":"additional","affiliation":[{"name":"Extremadura Research Center for Advanced Technologies (CETA\u2013CIEMAT), Trujillo 10200, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0879-5691","authenticated-orcid":false,"given":"Jos\u00e9","family":"Souto","sequence":"additional","affiliation":[{"name":"Chemistry Engineering Department, University of Santiago de Compostela, Santiago de Compostela 15782, Spain"}]},{"given":"Ram\u00f3n","family":"M\u00e9ndez-G\u00f3mez","sequence":"additional","affiliation":[{"name":"Chemistry Engineering Department, University of Santiago de Compostela, Santiago de Compostela 15782, Spain"}]},{"given":"David","family":"Cartelle","sequence":"additional","affiliation":[{"name":"Chemistry Engineering Department, University of Santiago de Compostela, Santiago de Compostela 15782, Spain"}]},{"given":"Juan","family":"Casares","sequence":"additional","affiliation":[{"name":"Chemistry Engineering Department, University of Santiago de Compostela, Santiago de Compostela 15782, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2018,5,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1016\/j.agrformet.2015.04.026","article-title":"On the stability of radiometric ratios of photosynthetically active radiation to global solar radiation in Tsukuba, Japan","volume":"209","author":"Akitsu","year":"2015","journal-title":"Agric. 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