The Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) high-priority candidate mission
The Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) high-priority candidate mission
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DOI：
10.5194/tc-14-2235-2020
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发表时间：
2020-07
期刊：
影响因子：
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通讯作者：
M. Kern;R. Cullen;B. Berruti;J. Bouffard;T. Casal;M. Drinkwater;A. Gabriele;A. Lecuyot;M. Ludwig;R. Midthassel;Ignacio Navas Traver;T. Parrinello;G. Ressler;E. Andersson;C. Martin-Puig;O. Andersen;A. Bartsch;S. Farrell;S. Fleury;S. Gascoin;A. Guillot;A. Humbert;E. Rinne;A. Shepherd;M. R. van den Broeke;J. Yackel
中科院分区：
文献类型：
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作者：
M. Kern;R. Cullen;B. Berruti;J. Bouffard;T. Casal;M. Drinkwater;A. Gabriele;A. Lecuyot;M. Ludwig;R. Midthassel;Ignacio Navas Traver;T. Parrinello;G. Ressler;E. Andersson;C. Martin-Puig;O. Andersen;A. Bartsch;S. Farrell;S. Fleury;S. Gascoin;A. Guillot;A. Humbert;E. Rinne;A. Shepherd;M. R. van den Broeke;J. Yackel
抽象的。哥白尼极地冰雪地形高度计（CRISTAL）使命是欧洲联盟委员会正在考虑的六个高优先候选飞行任务之一，目的是扩大哥白尼空间部分。这些高度优先的候选飞行任务共同填补了现有哥白尼空间部分测量能力方面的空白，以满足用户在监测人为二氧化碳排放、极地环境和地表方面新出现的紧迫要求。其目标是在2020年代中期通过高优先级候选任务扩大哥白尼太空部分，以与下一代现有的哥白尼哨兵任务协同提供增强的服务连续性。CRISTAL将携带一个双频合成孔径雷达高度计作为其测量表面高度的主要有效载荷，并携带一个无源微波辐射计，以支持大气校正和表面类型分类。高度计将具有Ku波段干涉测量能力，以提高地面分辨率，并具有第二个（非干涉测量）Ka波段频率，以提供关于雪层特性的信息。本文概述了支持哥白尼空间部分扩展以包括高优先候选飞行任务的用户协商，描述了CRISTAL使命的主要和次要目标，确定了CRISTAL使命将作出的关键贡献，并提出了一个使命有效载荷的概念-只要它已经被定义。
Abstract. The Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) mission is one of six high-priority candidate missions (HPCMs) under consideration by the European Commission to enlarge the Copernicus Space Component. Together, the high-priority candidate missions fill gaps in the measurement capability of the existing Copernicus Space Component to address emerging and urgent user requirements in relation to monitoring anthropogenic CO2 emissions, polar environments, and land surfaces. The ambition is to enlarge the Copernicus Space Component with the high-priority candidate missions in the mid-2020s to provide enhanced continuity of services in synergy with the next generation of the existing Copernicus Sentinel missions. CRISTAL will carry a dual-frequency synthetic-aperture radar altimeter as its primary payload for measuring surface height and a passive microwave radiometer to support atmospheric corrections and surface-type classification. The altimeter will have interferometric capabilities at Ku-band for improved ground resolution and a second (non-interferometric) Ka-band frequency to provide information on snow layer properties. This paper outlines the user consultations that have supported expansion of the Copernicus Space Component to include the high-priority candidate missions, describes the primary and secondary objectives of the CRISTAL mission, identifies the key contributions the CRISTAL mission will make, and presents a concept – as far as it is already defined – for the mission payload.