{"id":41,"date":"2017-06-22T10:52:48","date_gmt":"2017-06-22T10:52:48","guid":{"rendered":"http:\/\/snow.geus.dk\/?p=41"},"modified":"2017-06-22T11:19:30","modified_gmt":"2017-06-22T11:19:30","slug":"collocated-sentinel-3-olci-and-slstr-reflectance-imagery","status":"publish","type":"post","link":"https:\/\/snow.geus.dk\/index.php\/2017\/06\/22\/collocated-sentinel-3-olci-and-slstr-reflectance-imagery\/","title":{"rendered":"Collocated Sentinel-3 OLCI and SLSTR reflectance imagery"},"content":{"rendered":"

The S3 4Sci Snow research project is gaining momentum, now with scripts that enable batch processing of\u00a0two important steps: 1.) collocating OLCI and SLSTR imagery, that is, aligning pixels to a common geographic grid and 2.) converting the imagery to top of the atmosphere reflectance.<\/p>\n

\"20160822-s3-band-21-1020-nm-greenland\"<\/p>\n

(above, 22 August 2016 southern Greenland Sentinel-3 scene of TOA reflectance from OLCI band 21, 1020 nm). In this part of the optical spectrum we find\u00a0strong reflectance differences between fresh snow cover, melting snow and bare ice (dark areas).<\/p>\n

The processing chain the project follows\u00a0is illustrated below. The collocation happens as OLCI and SLSTR radiances are combined.<\/p>\n

\"flow-chart-2017-06-22\"<\/p>\n","protected":false},"excerpt":{"rendered":"

The S3 4Sci Snow research project is gaining momentum, now with scripts that enable batch processing of\u00a0two important steps: 1.) collocating OLCI and SLSTR imagery, that is, aligning pixels to a common geographic grid and 2.) converting the imagery to top of the atmosphere reflectance. (above, 22 August 2016 southern Greenland Sentinel-3 scene of TOA … Continue reading “Collocated Sentinel-3 OLCI and SLSTR reflectance imagery”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxG8S-F","jetpack-related-posts":[{"id":69,"url":"https:\/\/snow.geus.dk\/index.php\/2017\/07\/20\/greenland-ice-sheet-undulations-in-low-solar-illumination-angle-sentinel-3-imagery\/","url_meta":{"origin":41,"position":0},"title":"Greenland ice sheet undulations in low solar illumination angle Sentinel-3 imagery","date":"July 20, 2017","format":false,"excerpt":"illuminated by low solar angles, this late 2016\u00a0Sentinel-3 OLCI image spectacularly features Greenland ice sheet undulations.","rel":"","context":"In "Sentinel-3 monitors the cryosphere"","img":{"alt_text":"Sentinel-3 OLCI 864 29 October, 2016 1415 UTC","src":"https:\/\/i0.wp.com\/snow.geus.dk\/wp-content\/uploads\/2016_10_29_14h15m_RGB_864-1024x779.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15,"url":"https:\/\/snow.geus.dk\/index.php\/2016\/10\/28\/2-year-post-doctoral-position-in-snow-optical-remote-sensing-at-lgge\/","url_meta":{"origin":41,"position":1},"title":"2-year post-doctoral position in snow optical remote sensing at LGGE","date":"October 28, 2016","format":false,"excerpt":"This project is about monitoring snow properties evolution on the long-term using Sentinel satellite series at global scale. The successful candidates will evaluate and develop retrieval algorithms. The project will more specifically focus on two primary sites, one in Canada and the other one in the French Alps. Secondary sites\u2026","rel":"","context":"Similar post","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":61,"url":"https:\/\/snow.geus.dk\/index.php\/2017\/07\/10\/snow-blankets-the-greenland-melt-zone\/","url_meta":{"origin":41,"position":2},"title":"snow blankets the Greenland melt zone","date":"July 10, 2017","format":false,"excerpt":"at a time when melting should be in full force and precipitation should perhaps be liquid that solid, Sentinel-3 OLCI provides\u00a0views of a snow blanketed\u00a0western Greenland ice sheet ablation area. (above) 5\u00a0July, 2017 1458 UTC, we see surface meltwater lakes poking through fresh snow and even some snow on land\u2026","rel":"","context":"In "Sentinel-3 monitors the cryosphere"","img":{"alt_text":"20170705_1458_rgb","src":"https:\/\/i0.wp.com\/snow.geus.dk\/wp-content\/uploads\/20170705_1458_RGB.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":36,"url":"https:\/\/snow.geus.dk\/index.php\/2017\/06\/22\/sentinel-2-at-the-lautaret-site\/","url_meta":{"origin":41,"position":3},"title":"Sentinel-2 at the Lautaret site","date":"June 22, 2017","format":false,"excerpt":"The col du Lautaret site, located in the heart of the French Alps, is used by the team as a validation target for the \"ESA SEOM Sentinel-3 for Science Land Study: Snow S-3-Snow\u201d\" project. The site is host to numerous observations of the snowpack and the atmosphere which will be\u2026","rel":"","context":"In "data"","img":{"alt_text":"s2-lautaret","src":"https:\/\/i0.wp.com\/snow.geus.dk\/wp-content\/uploads\/S2-Lautaret.gif?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":52,"url":"https:\/\/snow.geus.dk\/index.php\/2017\/07\/07\/sentinel-2-and-sentinel-3-snow-optics-field-validation-at-col-du-lautaret-in-the-french-alps\/","url_meta":{"origin":41,"position":4},"title":"Sentinel-2 and Sentinel-3 snow optics field validation at Col du Lautaret, in the French Alps","date":"July 7, 2017","format":false,"excerpt":"Field measurements are essential for testing the performance of new algorithms and validating satellite remote sensing products. Among the validation sites chosen for the project, Col du Lautaret, in the French Alps is an ideal validation site, as it offers easy access and a variety of conditions to test the\u2026","rel":"","context":"In "field validation"","img":{"alt_text":"2017-03-28-11-21-51","src":"https:\/\/i0.wp.com\/snow.geus.dk\/wp-content\/uploads\/2017-03-28-11-21-51-1024x870.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":133,"url":"https:\/\/snow.geus.dk\/index.php\/2018\/09\/26\/web-story-sentinel-3-validation-team-forge-ahead-with-satellite-data\/","url_meta":{"origin":41,"position":5},"title":"Web Story: Sentinel-3 validation team forge ahead with satellite data","date":"September 26, 2018","format":false,"excerpt":"link to 16 MARCH 2017 Web Story Sentinel-3 Validation Team forge ahead with satellite data Cryosphere Excerpt copied form above link: Sentinel-3 is providing key observations addressing cryosphere's evolution given that decreasing snow cover is one of the clearest indicators of a warming climate. Snow has a major influence on\u2026","rel":"","context":"Similar post","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/posts\/41"}],"collection":[{"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/comments?post=41"}],"version-history":[{"count":4,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":48,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/posts\/41\/revisions\/48"}],"wp:attachment":[{"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/media?parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/categories?post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/snow.geus.dk\/index.php\/wp-json\/wp\/v2\/tags?post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}