石堅(jiān)論壇
石堅(jiān)論壇第60講: Analysis of TIR directional effects for preparing the future satellite mission TRISHNA
文章來源：光明日?qǐng)?bào) | 發(fā)布時(shí)間：2019-10-15 | 【打印】 【關(guān)閉】
報(bào) 告 人：Jean-Louis Roujean 研究員 法國科學(xué)院
報(bào)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(bào)告人簡介：
Jean-Louis Roujean，法國科學(xué)院研究員，法國生物圈空間科學(xué)中心研究員，法國地表空間科學(xué)研究委員會(huì)主席，法國-印度共建衛(wèi)星計(jì)劃TRISHNA首席科學(xué)家。1991年于法國圖盧茲第三大學(xué)獲得博士學(xué)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(xué)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(shù)據(jù)融合與同化、植被生態(tài)系統(tǒng)遙感觀測等。目前已發(fā)表學(xué)術(shù)論文80余篇，其提出的核驅(qū)動(dòng)模型被廣泛應(yīng)用于MODIS, POLDER, MERIS, VEGETATION, METEOSAT, PROBA-V等載荷的產(chǎn)品算法，該篇論文被引用1100余次。
主持人：唐伯惠 研究員
時(shí) 間：2019年10月16日（星期三）下午14:00
地 點(diǎn)：A0214會(huì)議室
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