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arXiv 2202.09561astro-ph.IM
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通过分析用GaAsP HPD读出的、绝对校准的弹性LIDAR获得的7年数据来表征Observatorio del Roque de los Muchachos上空的气溶胶大气

Characterizing the aerosol atmosphere above the Observatorio del Roque de los Muchachos by analyzing seven years of data taken with an GaAsP HPD-readout, absolutely calibrated elastic LIDAR

Christian Fruck, Markus Gaug, Alexander Hahn, Victor Acciari, Jürgen Besenrieder, Dijana Dominis Prester, Daniela Dorner, David Fink, Lluís Font, Saša Mićanović… 展开作者

Christian Fruck, Markus Gaug, Alexander Hahn, Victor Acciari, Jürgen Besenrieder, Dijana Dominis Prester, Daniela Dorner, David Fink, Lluís Font, Saša Mićanović, Razmik Mirzoyan, Dominik Müller, Lovro Pavletić, Felix Schmuckermaier, Martin Will

摘要:

我们提出了一种新的弹性激光雷达的概念,双轴安装的Nd:YAG激光器和HPD读出望远镜的基础上,结合快速FADC信号数字化和离线脉冲分析。激光雷达返回信号经过广泛的质量检查和绝对校准。我们分析了七年的准连续激光雷达数据,这些数据是在MAGIC望远镜运行的那些夜晚拍摄的。夜间地面层的特性产生天顶和方位角依赖的气溶胶消光尺度高度的晴朗的夜晚。我们得出气溶胶传输的统计数据,全年从不同高度发出的光,并按季节分开。我们发现进一步的季节依赖性云底和顶部高度,但没有云的激光雷达比。最后,夜空背景光的特点是使用激光雷达光子背景。abstract.txt

英文摘要:

We present a new elastic LIDAR concept, based on a bi-axially mounted Nd:YAG laser and a telescope with HPD readout, combined with fast FADC signal digitization and offline pulse analysis. The LIDAR return signals have been extensively quality checked and absolutely calibrated. We analyze seven years of quasi-continuous LIDAR data taken during those nights when the MAGIC telescopes were operating. Characterization of the nocturnal ground layer yields zenith and azimuth angle dependent aerosol extinction scale heights for clear nights. We derive aerosol transmission statistics for light emitted from various altitudes throughout the year and separated by seasons. We find further seasonal dependencies of cloud base and top altitudes, but none for the LIDAR ratios of clouds. Finally, the night sky background light is characterized using the LIDAR photon backgrounds. abstract.txt

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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