MABEL Photon-Counting Laser Altimetry Data in Alaska for ICESat-2 Simulations and Development
MABEL Photon-Counting Laser Altimetry Data in Alaska for ICESat-2 Simulations and Development
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DOI：
10.5194/tc-10-1707-2016
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
K. Brunt;T. Neumann;J. Amundson;J. Kavanaugh;M. Moussavi;K. Walsh;W. Cook;T. Markus
中科院分区：
文献类型：
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作者：
K. Brunt;T. Neumann;J. Amundson;J. Kavanaugh;M. Moussavi;K. Walsh;W. Cook;T. Markus
摘要。冰、云和陆地高程卫星2号（ICESat-2）计划于2017年底发射，将携带先进地形激光高度计系统（ATLAS），这是一种光子计数激光高度计，代表了卫星确定地表高程的新方法。考虑到ATLAS的新技术，一种机载仪器——多高度计波束实验激光雷达（MABEL）被开发出来，为卫星算法开发和ICESat-2误差分析提供所需的数据。MABEL于2014年7月部署在阿拉斯加州费尔班克斯，为算法开发提供了一个测试数据集，用于夏季饱和冰雪条件下的算法开发。在这里，我们将MABEL激光雷达数据与阿拉斯加东南部的原位观测数据进行比较，以评估仪器在夏季条件下以及冰川表面融化池和湿积雪存在下的性能。结果表明：(1)基于MABEL和现场数据对比，ATLAS 90 m波束间距策略将提供与浅坡(
Abstract. Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) is scheduled to launch in late 2017 and will carry the Advanced Topographic Laser Altimeter System (ATLAS), which is a photon-counting laser altimeter and represents a new approach to satellite determination of surface elevation. Given the new technology of ATLAS, an airborne instrument, the Multiple Altimeter Beam Experimental Lidar (MABEL), was developed to provide data needed for satellite-algorithm development and ICESat-2 error analysis. MABEL was deployed out of Fairbanks, Alaska, in July 2014 to provide a test dataset for algorithm development in summer conditions with water-saturated snow and ice surfaces. Here we compare MABEL lidar data to in situ observations in Southeast Alaska to assess instrument performance in summer conditions and in the presence of glacier surface melt ponds and a wet snowpack. Results indicate the following: (1) based on MABEL and in situ data comparisons, the ATLAS 90 m beam-spacing strategy will provide a valid assessment of across-track slope that is consistent with shallow slopes (