Abstract. The Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) was a year-round campaign conducted by the US Department of Energy at the Scripps Institution of Oceanography in La Jolla, CA, USA, with a focus on characterizing atmospheric processes at a coastal location. The ground-based prototype of a new Ka-, W-, and G-band (35.75, 94.88, and 238.8 GHz) profiling atmospheric radar, named CloudCube, which was developed at the Jet Propulsion Laboratory, took part in the experiment during 6 weeks in March and April 2023. This article describes the unique data sets that were obtained during the field campaign from a variety of marine clouds and light precipitation. These are, to the best of the authors' knowledge, the first observations of atmospheric clouds using simultaneous multifrequency measurements including 238.8 GHz. These data sets therefore provide an exceptional opportunity to study and analyze hydrometeors with diameters in the millimeter- and submillimeter size range that can be used to better understand cloud and precipitation structure, formation, and evolution. The data sets referenced in this article are intended to provide a complete, extensive, and high-quality collection of G-band data in the form of Doppler spectra and Doppler moments. In addition, Ka-band and W-band reflectivity and Ka-, W-, and G-band reflectivity ratio profiles are included for several cases of interest on 6 different days. The data sets can be found at https://doi.org/10.5281/zenodo.10076227 (Socuellamos et al., 2024).

中文翻译：

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EPCAPE 活动期间海洋云的多频雷达观测


摘要。东太平洋云气溶胶降水实验 (EPCAPE) 是美国能源部在美国加利福尼亚州拉霍亚斯克里普斯海洋学研究所开展的一项全年活动，重点是描述沿海地区的大气过程。喷气推进实验室开发的新型 Ka、W 和 G 波段（35.75、94.88 和 238.8GHz）剖面大气雷达的地面原型，名为 CloudCube，在 6 年间参加了实验。 2023 年 3 月和 4 月的几周内。本文介绍了在实地活动期间从各种海洋云和轻微降水中获得的独特数据集。据作者所知，这是首次使用同时多频率测量（包括 238.8GHz）对大气云进行观测。因此，这些数据集为研究和分析直径在毫米和亚毫米范围内的水凝物提供了绝佳的机会，可用于更好地了解云和降水的结构、形成和演化。本文引用的数据集旨在以多普勒频谱和多普勒矩的形式提供完整、广泛且高质量的 G 波段数据集合。此外，还包括 6 个不同天数个感兴趣案例的 Ka 波段和 W 波段反射率以及 Ka、W 和 G 波段反射率比剖面。数据集可以在 https://doi.org/10.5281/zenodo.10076227 找到（Socuellamos 等人，2024）。