Abstract. This paper describes a new global dataset of cloud properties observed by MODIS relying on the current (collection 6.1) processing of MODIS data and produced to facilitate comparison with results from the MODIS observational proxy used in climate models. The dataset merges observations from the two MODIS instruments into a single netCDF file. Statistics (mean, standard deviation, number of observations) are accumulated over daily and monthly time scales on an equal-5 angle grid for viewing and illumination geometry, cloud detection, cloud-top pressure, and cloud properties (optical thickness, effective particle size, water path) partitioned by thermodynamic phase and an assessment as to whether the underlying observations come from fully- or partly-cloudy pixels. Similarly partitioned joint histograms are available for (1) optical thickness and cloud-top pressure, (2) optical thickness and particle size, and (3) cloud water path and particle size. Differences with standard data products, caveats for data use, and guidelines for comparison to the MODIS simulator are described. Data 10 are available on daily (NASA, 2022a, doi:10.5067/MODIS/MCD06COSP_D3_MODIS.062) and monthly (NASA, 2022b, doi:10.5067/MODIS/MCD06COSP_M3_MODIS.062) timescales.

中文翻译：

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MODIS 更新的云观测以进行全球模式评估

摘要。本文描述了 MODIS 观测到的一个新的全球云特性数据集，该数据集依赖于 MODIS 数据的当前（集合 6.1）处理，并产生了便于与气候模型中使用的 MODIS 观测代理的结果进行比较。该数据集将来自两个 MODIS 仪器的观测结果合并到一个 netCDF 文件中。统计数据（平均值、标准偏差、观察次数）在等 5 角网格上累积每日和每月时间尺度，用于观察和照明几何、云检测、云顶压力和云特性（光学厚度、有效粒径，水路径）由热力学阶段划分，并评估基础观测是来自完全或部分多云的像素。类似的分区联合直方图可用于 (1) 光学厚度和云顶压力，(2) 光学厚度和粒度，以及 (3) 云水路径和粒度。描述了与标准数据产品的差异、数据使用注意事项以及与 MODIS 模拟器进行比较的指南。数据 10 在每日（NASA, 2022a, doi:10.5067/MODIS/MCD06COSP_D3_MODIS.062）和每月（NASA, 2022b, doi:10.5067/MODIS/MCD06COSP_M3_MODIS.062）时间尺度上可用。