{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T16:14:27Z","timestamp":1781108067214,"version":"3.54.1"},"reference-count":88,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:00:00Z","timestamp":1726185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Copernicus","award":["NE\/X019071\/1"],"award-info":[{"award-number":["NE\/X019071\/1"]}]},{"name":"Copernicus","award":["NE\/R016518\/1"],"award-info":[{"award-number":["NE\/R016518\/1"]}]},{"DOI":"10.13039\/501100000270","name":"Natural Environment Research Council","doi-asserted-by":"publisher","award":["NE\/X019071\/1"],"award-info":[{"award-number":["NE\/X019071\/1"]}],"id":[{"id":"10.13039\/501100000270","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000270","name":"Natural Environment Research Council","doi-asserted-by":"publisher","award":["NE\/R016518\/1"],"award-info":[{"award-number":["NE\/R016518\/1"]}],"id":[{"id":"10.13039\/501100000270","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Land Surface Temperature (LST) is integral to our understanding of the radiative energy budget of the Earth\u2019s surface since it provides the best approximation to the thermodynamic temperature that drives the outgoing longwave flux from surface to atmosphere. Since 5 July 2017, an operational LST product has been available from the Sentinel-3A mission, with the corresponding product being available from Sentinel-3B since 17 November 2018. Here, we present the first paper describing formal products, including algorithms, for the Sea and Land Surface Temperature Radiometer (SLSTR) instruments onboard Sentinel-3A and 3B (SLSTR-A and SLSTR-B, respectively). We evaluate the quality of both the Land Surface Temperature Climate Change Initiative (LST_cci) product and the Copernicus operational LST product (SL_2_LST) for the years 2018 to 2021. The evaluation takes the form of a validation against ground-based observations of LST across eleven well-established in situ stations. For the validation, the mean absolute daytime and night-time difference against the in situ measurements for the LST_cci product is 0.77 K and 0.50 K, respectively, for SLSTR-A, and 0.91 K and 0.54 K, respectively, for SLSTR-B. These are an improvement on the corresponding statistics for the SL_2_LST product, which are 1.45 K (daytime) and 0.76 (night-time) for SLSTR-A, and 1.29 K (daytime) and 0.77 (night-time) for SLSTR-B. The key influencing factors in this improvement include an upgraded database of reference states for the generation of retrieval coefficients, higher stratification of the auxiliary data for the biome and fractional vegetation, and enhanced cloud masking.<\/jats:p>","DOI":"10.3390\/rs16183403","type":"journal-article","created":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T03:03:37Z","timestamp":1726196617000},"page":"3403","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The Operational and Climate Land Surface Temperature Products from the Sea and Land Surface Temperature Radiometers on Sentinel-3A and 3B"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9810-3790","authenticated-orcid":false,"given":"Darren","family":"Ghent","sequence":"first","affiliation":[{"name":"National Centre for Earth Observation (NCEO), School of Physics and Astronomy, University of Leicester, Space Park, Leicester LE4 5SP, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jasdeep Singh","family":"Anand","sequence":"additional","affiliation":[{"name":"National Centre for Earth Observation (NCEO), School of Physics and Astronomy, University of Leicester, Space Park, Leicester LE4 5SP, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen","family":"Veal","sequence":"additional","affiliation":[{"name":"National Centre for Earth Observation (NCEO), School of Physics and Astronomy, University of Leicester, Space Park, Leicester LE4 5SP, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Remedios","sequence":"additional","affiliation":[{"name":"National Centre for Earth Observation (NCEO), School of Physics and Astronomy, University of Leicester, Space Park, Leicester LE4 5SP, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,9,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1126\/science.275.5299.502","article-title":"Modeling the exchanges of energy, water, and carbon between continents and the atmosphere","volume":"275","author":"Sellers","year":"1997","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1096","DOI":"10.1175\/1520-0469(1995)052<1096:DOSFFT>2.0.CO;2","article-title":"Determination of surface fluxes from the surface radiative temperature","volume":"52","author":"Sun","year":"1995","journal-title":"J. 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