Abstract. Clouds play important roles in weather, climate, and the global water cycle. The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) onboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft has measured global vertical profiles of clouds and aerosols in the Earth’s atmosphere since June 2006. CALIOP provides vertically resolved information on cloud occurrence, thermodynamic phase, and properties. We describe version 1.0 of a monthly gridded ice cloud product derived from over 12 years of global, near-continuous CALIOP measurements. The primary contents are monthly vertically resolved histograms of ice cloud extinction coefficient and ice water content (IWC) retrievals. The CALIOP Level 3 Ice Cloud product is built from the CALIOP Version 4.20 Level 2 5 km Cloud Profile product that, relative to previous versions, features substantial improvements due to more accurate lidar backscatter calibration, better extinction coefficient retrievals, and a temperature-sensitive parameterization of IWC. The gridded ice cloud data are reported as histograms, which provides data users with the flexibility to compare CALIOP’s retrieved ice cloud properties with those from other instruments with different measurement sensitivities or retrieval capabilities. It is also convenient to aggregate monthly histograms for seasonal, annual, or decadal trend and climate analyses. This CALIOP gridded ice cloud product provides a unique characterization of the global and regional vertical distributions of optically thin ice clouds and deep convection cloud tops, and it should provide significant value for cloud research and model evaluation. A DOI has been issued for the product: https://doi.org/10.5067/CALIOP/CALIPSO/L3_ICE_CLOUD-STANDARD-V1-00 (Winker et al., 2018).

中文翻译：

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来自 12 年 CALIOP 测量的 3 级每月网格冰云数据集


摘要。云在天气、气候和全球水循环中发挥着重要作用。自 2006 年 6 月以来，云气溶胶激光雷达和红外探路者卫星观测 (CALIPSO) 航天器上的正交偏振云气溶胶激光雷达 (CALIOP) 已经测量了地球大气中云和气溶胶的全球垂直剖面。CALIOP 提供了云的垂直分辨信息发生、热力学相和性质。我们描述了每月网格冰云产品 1.0 版本，该产品源自超过 12 年的全球近乎连续的 CALIOP 测量。主要内容是冰云消光系数和冰水含量（IWC）反演的每月垂直解析直方图。 CALIOP Level 3 Ice Cloud 产品基于 CALIOP 版本 4.20 Level 2 5 km Cloud Profile 产品构建，相对于之前的版本，由于更准确的激光雷达反向散射校准、更好的消光系数检索和温度敏感参数化，具有显着改进IWC万国表。网格冰云数据以直方图的形式报告，这为数据用户提供了灵活性，可以将 CALIOP 检索到的冰云属性与具有不同测量灵敏度或检索功能的其他仪器的冰云属性进行比较。还可以方便地汇总每月直方图以进行季节性、年度或十年趋势和气候分析。这种CALIOP网格冰云产品提供了光学薄冰云和深对流云顶的全球和区域垂直分布的独特表征，它应该为云研究和模型评估提供重要价值。该产品已发布 DOI：https://doi.org/10。5067/CALIOP/CALIPSO/L3_ICE_CLOUD-STANDARD-V1-00（Winker 等人，2018）。