Ka-Band ARM Zenith RADAR (KAZR) CF-Radial Spectral Data, moderate sensitivity mode, co-polarized mode - kazrcfrspcmdcopol

The Ka-band ARM Zenith Radar (KAZR) remotely probes the extent and composition of clouds at millimeter wavelengths. The KAZR is a zenith-pointing Doppler radar that operates at a frequency of approximately 35 GHz. The main purpose of this radar is to determine the first three Doppler moments (reflectivity, vertical velocity, and spectral width) at a range resolution of approximately 30 meters from near-ground to nearly 20 kilometers in altitude. \n \nThe KAZR replaces the millimeter-wavelength cloud radar (MMCR) and uses a new digital receiver that provides higher spatial and temporal resolution than the MMCR. In addition, spectral artifacts in the data are significantly reduced in the KAZR, allowing researchers to study cloud dynamics much more closely than with the MMCR. \n \nKAZR data from the 2018 2019 Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign in Argentina are now available as b1-level products. Building on the original CACTI operational data, the b1-level products feature improved data quality resulting from extensive analyses and corrections. The data are cross-calibrated to a common point, datastreams are corrected for operational issues that occurred during the campaign, and several data quality masks and basic derived products are incorporated. For more information, read the CACTI radar b1-level processing report.Ka波段ARM天顶雷达（Ka-band ARM Zenith Radar, KAZR）通过毫米波段遥感手段探测云的分布范围与组成属性。该雷达为天顶指向式多普勒雷达，工作频率约为35 GHz，其核心功能是在近地面至近20千米的高度区间内，以约30米的距离分辨率获取三类基础多普勒矩量：反射率、垂直速度与谱宽。 KAZR替代了原有的毫米波云雷达（millimeter-wavelength cloud radar, MMCR），搭载了全新的数字接收机，相较MMCR具备更优异的空间与时间分辨率。此外，KAZR的数据中谱伪影得到显著抑制，令研究人员可相较于使用MMCR时更深入细致地开展云动力学相关研究。 目前，2018至2019年在阿根廷开展的云、气溶胶与复杂地形相互作用（Cloud, Aerosol, and Complex Terrain Interactions, CACTI）野外试验的KAZR数据已以b1级产品形式对外发布。该b1级产品基于原始CACTI业务数据开发，通过全面的分析与校正工作实现了数据质量的优化：数据已完成交叉校准至统一基准，针对试验期间出现的各类业务问题完成了数据流校正，并集成了多套数据质量掩码与基础衍生产品。如需获取更多相关信息，请参阅《CACTI雷达b1级处理报告》。