{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T14:35:16Z","timestamp":1764858916086,"version":"build-2065373602"},"reference-count":55,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2016,6,24]],"date-time":"2016-06-24T00:00:00Z","timestamp":1466726400000},"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>Daily estimates of the solar UV-A radiation (315\u2013400 nm) at the surface, anywhere, anytime, are needed in many epidemiology studies. Satellite-derived databases of solar total irradiance, combined with empirical relationships converting totals into daily means of UV-A irradiance      I  U V      , are a means to satisfy such needs. Four empirical relationships are applied to three different databases: HelioClim-3 (versions 4 and 5) and CAMS Radiation Service\u2014formerly known as MACC-RAD\u2014derived from Meteosat images. The results of these combinations are compared to ground-based measurements located in mid-latitude Europe, mostly in Belgium. Whatever the database, the relationships of Podstawczynska (2010) and of Bilbao et al. (2011) exhibit very large underestimation and RMSE on the order of 40%\u201350% of the mean      I  U V      . Better and more acceptable results are attained with the relationships proposed by Zavodska and Reichrt (1985) and that of Wald (2012). The relative RMSE is still large and in the range 10%\u201330% of the mean      I  U V      . The correlation coefficients are large for all relationships. Each of them captures most of the variability contained in the UV measurements and can be used in studies where correlation plays a major role.<\/jats:p>","DOI":"10.3390\/rs8070537","type":"journal-article","created":{"date-parts":[[2016,6,25]],"date-time":"2016-06-25T21:21:45Z","timestamp":1466889705000},"page":"537","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Assessment of Several Empirical Relationships for Deriving Daily Means of UV-A Irradiance from Meteosat-Based Estimates of the Total Irradiance"],"prefix":"10.3390","volume":"8","author":[{"given":"Alexandr","family":"Aculinin","sequence":"first","affiliation":[{"name":"Laboratory of Materials for Photovoltaics and Photonics, Institute of Applied Physics, ASM, 2028 Kishinev, Moldova"}]},{"given":"Colette","family":"Brogniez","sequence":"additional","affiliation":[{"name":"Laboratoire d\u2019Optique Atmosph\u00e9rique, Universit\u00e9 de Lille, 59655 Villeneuve d\u2019Ascq Cedex, France"}]},{"given":"Marc","family":"Bengulescu","sequence":"additional","affiliation":[{"name":"MINES ParisTech, PSL Research University, CS 10207, 06904 Sophia Antipolis Cedex, France"}]},{"given":"Didier","family":"Gillotay","sequence":"additional","affiliation":[{"name":"Institut d\u2019A\u00e9ronomie Spatiale de Belgique, Avenue Circulaire, 3, 1180 Bruxelles, Belgium"}]},{"given":"Fr\u00e9d\u00e9rique","family":"Auriol","sequence":"additional","affiliation":[{"name":"Laboratoire d\u2019Optique Atmosph\u00e9rique, Universit\u00e9 de Lille, 59655 Villeneuve d\u2019Ascq Cedex, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2916-2391","authenticated-orcid":false,"given":"Lucien","family":"Wald","sequence":"additional","affiliation":[{"name":"MINES ParisTech, PSL Research University, CS 10207, 06904 Sophia Antipolis Cedex, France"}]}],"member":"1968","published-online":{"date-parts":[[2016,6,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"066701","DOI":"10.1088\/0034-4885\/74\/6\/066701","article-title":"Solar radiation and human health","volume":"74","author":"Juzeniene","year":"2010","journal-title":"Rep. 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