石堅論壇
石堅論壇第60講: Analysis of TIR directional effects for preparing the future satellite mission TRISHNA
文章來源：光明日報 | 發布時間：2019-10-15 | 【打印】 【關閉】
報 告 人：Jean-Louis Roujean 研究員 法國科學院
報告摘要：TRISHNA is a future satellite mission in the TIR domain with scientific objectives including: the water stress of the ecosystems, the monitoring of coastal areas, the urban heat island, and further the solid Earth, the cryosphere and the atmosphere. TRISHNA will have a 3-days revisit per week and a global coverage. Four TIR channels and 6 VNIR channels are proposed, with a spatial resolution about 50m. TRISHNA will have a wide FOV which will generate sizeable directional effects on the brightness temperature and land surface temperature (LST). Before all, in the intertropical zone and from March to October, at least 1 from the 3 weekly successive observations will be contaminated by the hotspot phenomenon. Results of preparative studies for TRISHNA will be shown, using parametric models (RL), 1D (SCOPE) and 3D (DART) to correct for directional effect, and particularly the hotspot effect. Moreover, the added value of VNIR signal for TIR interpretation will be outlined. Finally, envisaged methods like GWS and TES for LST retrieval will be explained.
報告人簡介：
Jean-Louis Roujean，法國科學院研究員，法國生物圈空間科學中心研究員，法國地表空間科學研究委員會主席，法國-印度共建衛星計劃TRISHNA首席科學家。1991年于法國圖盧茲第三大學獲得博士學位，先后在法國航天局、法國氣象研究中心、法國生物圈空間科學中心工作，曾任法國氣象研究中心副主任。主要研究興趣包括多尺度地表二向反射特性建模、輻射通量估算、數據融合與同化、植被生態系統遙感觀測等。目前已發表學術論文80余篇，其提出的核驅動模型被廣泛應用于MODIS, POLDER, MERIS, VEGETATION, METEOSAT, PROBA-V等載荷的產品算法，該篇論文被引用1100余次。
主持人：唐伯惠 研究員
時 間：2019年10月16日（星期三）下午14:00
地 點：A0214會議室
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