{"id":4832,"date":"2025-11-24T16:03:48","date_gmt":"2025-11-24T16:03:48","guid":{"rendered":"https:\/\/hygeos.com\/?p=4832"},"modified":"2025-11-24T16:03:48","modified_gmt":"2025-11-24T16:03:48","slug":"hygeos-at-the-international-workshop-on-high-resolution-thermal-earth-observation","status":"publish","type":"post","link":"https:\/\/hygeos.com\/en\/hygeos-at-the-international-workshop-on-high-resolution-thermal-earth-observation\/","title":{"rendered":"HYGEOS at the International Workshop on High-Resolution Thermal Earth Observation"},"content":{"rendered":"
<\/span><\/div><\/div><\/div><\/div><\/div><\/div>

HYGEOS at the International Workshop on High-Resolution Thermal Earth Observation<\/h1><\/div>

HYGEOS participated in the International Workshop on High-Resolution Thermal Earth Observation<\/a> (THERMAL-EO), held from 18th<\/sup> to 20th<\/sup> November in Toulouse, France. The event focused on the future high resolution thermal infrared missions such as the Indian-French high spatio-temporal Thermal infraRed Imaging Satellite for High-resolution Natural resource Assessment<\/a> (TRISHNA) mission, the Land Surface Temperature Monitoring<\/a> (LSTM) mission and the Surface Biology and Geology<\/a> (SBG) mission. It gathered contributors to the design of the missions, to the elaboration of scientific products as well as potential users.<\/p>\n<\/div><\/div><\/div><\/div>

During the event, we presented our work conducted for CNES<\/strong> as part of the TRISHNA mission<\/strong>. We have optimized the surface temperature and emissivity retrieval algorithm DirecTES<\/strong> [Marcq et al. 2023<\/a>]. For that, we have developed a new generalist spectral library from the Combined ASTER MODIS Emissivity over Land (CAMEL) database [Borbas et al., 2018<\/a>] and we have modified the selection criteria of materials in the spectral library. New DirecTES version 2 was tested with simulated Top-Of-Atmosphere THRISHNA radiances. Optimized DirecTES V2 globally reduces bias and root mean square error, with respect to the original DirecTES V1. The performances are significantly improved on desertic surfaces<\/strong> while they are not degraded in vegetated regions. All results are summarized in a poster<\/strong><\/a>.<\/p>\n<\/div><\/div><\/div>

\"Bias<\/span><\/div>

Bias on LST retrieved with DirecTES V1 and V2, on images of TOA radiances simulated with CAMEL and ERA5 monthly averaged databases at 0.05\u00b0 spatial resolution for August 2017.<\/em><\/p>\n<\/div><\/div><\/div><\/div>

Additionally, we engaged in insightful discussions on the application of surface temperature and exogenous data to assess urban heat islands<\/strong>, exploring innovative approaches to address environmental challenges in urban settings.<\/p>\n<\/div><\/div><\/div><\/div>

<\/i>Go back<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Discover the HYGEOS\u2019 work on Land Surface Temperature and Emissivity in preparation of the TRISHNA mission. <\/p>\n","protected":false},"author":2,"featured_media":3485,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-4832","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conference"],"yoast_head":"\nHYGEOS at THERMAL-EO 2025<\/title>\n<meta name=\"description\" content=\"HYGEOS presented itw work on Land Surface Temperature and Emissivity in preparation of the TRISHNA mission.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hygeos.com\/en\/hygeos-at-the-international-workshop-on-high-resolution-thermal-earth-observation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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