{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:00:14Z","timestamp":1762506014599,"version":"build-2065373602"},"reference-count":60,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2012,12,5]],"date-time":"2012-12-05T00:00:00Z","timestamp":1354665600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Models and observations show that the Arctic is experiencing the most rapid changes in global near-surface air temperature. We developed novel EASE-grid Level 3 (L3) land surface temperature (LST) products from Level 2 (L2) AATSR and MODIS data to provide weekly, monthly and annual LST means over the pan-Arctic region at various grid resolutions (1\u201325 km) for the past decade (2000\u20132010). In this paper, we provide: (1) a review of previous validation of MODIS\/AATSR L2; (2) a description of the processing chain of L3 products; (3) an assessment of the 25 km products uncertainty, and; (4) a quantification of the bias introduced by over-representing clear-sky days in MODIS L3 products. In addition, we generated uncertainty maps by comparing L3 products with LST from passive microwave sensors (AMSR-E and SSM\/I) and the North American Regional Reanalysis (NARR). Results show a close correspondence between MODIS and AATSR monthly products with a mean-difference (MD) of \u22121.1 K. Comparing L3 products with NARR indicates a close agreement in summer and a systematic bias in winter, which is entirely negative with respect to MODIS L3 (MD: \u22123.6, Min: \u22126.8, Max: \u22121 K). Comparing monthly averaged MODIS L3 to NARR clear-sky to quantify over-representing clear-sky days indicates a decrease of winter and an increase of summer difference compared to NARR all-sky. Finally, we provide suggestions to improve LST retrieval over Arctic regions.<\/jats:p>","DOI":"10.3390\/rs4123833","type":"journal-article","created":{"date-parts":[[2012,12,5]],"date-time":"2012-12-05T12:46:59Z","timestamp":1354711619000},"page":"3833-3856","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Pan-Arctic Land Surface Temperature from MODIS and AATSR: Product Development and Intercomparison"],"prefix":"10.3390","volume":"4","author":[{"given":"Aiman","family":"Soliman","sequence":"first","affiliation":[{"name":"Interdisciplinary Centre on Climate Change (IC3), University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1044-5850","authenticated-orcid":false,"given":"Claude","family":"Duguay","sequence":"additional","affiliation":[{"name":"Interdisciplinary Centre on Climate Change (IC3), University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Saunders","sequence":"additional","affiliation":[{"name":"Interdisciplinary Centre on Climate Change (IC3), University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sonia","family":"Hachem","sequence":"additional","affiliation":[{"name":"Interdisciplinary Centre on Climate Change (IC3), University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,12,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1109\/TGRS.2008.2002912","article-title":"Land surface temperature from the Advanced Along-Track Scanning Radiometer: Validation over inland waters and vegetated surfaces","volume":"47","author":"Coll","year":"2009","journal-title":"IEEE Trans. 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