EarthCARE/CPR L2A CPR one-sensor Cloud Products

EarthCARE/CPR/CPR_CLP dataset is obtained from the Cloud Profiling Radar (CPR) sensor onboard Earth Cloud Aerosol and Radiation Explorer (EarthCARE) Satellite and produced by the Japan Aerospace Exploration Agency (JAXA). EarthCARE Satellite carries four observation sensors: the Cloud Profiling Radar(CPR), the Atmospheric Lidar(ATLID), the Multi-Spectral Imager(MSI), and the Broadband Radiometer(BBR). The main purpose of EarthCARE to globally observe the distribution and vertical structure of clouds and aerosols, as well as the radiant energy at the top of the atmosphere. This project aims to contribute to improving the accuracy of climate change prediction by considering the behavior of clouds and aerosols and their impact on the Earth's climate, incorporating the obtained knowledge into numerical climate models, and constraining the large uncertainties in cloud-aerosol-radiation interactions within numerical climate models. EarthCARE Satellite was launched on 28/05/2024(UTC).EarthCARE Satellite can observe a range from approximately 90 degrees south latitude to approximately 90 degrees north latitude, and flies in a sun-synchronous subrecurrent orbit (number of return days: 25 days) at an altitude of approximately 400 km. The vertical resolution of CPR is approximately 500m.In the CPR level 2A standard processing, the level 1B products is used as input data. This product contains information on cloud water content, cloud effective radius, cloud optical thickness, cloud mask, and cloud particle types. The data is integrated for both 1km and 10km.The file format is HDF5, but it's compatible with NetCDF4. It is divided into header and science data sections. The sampling resolution is 1km (horizontal) and 0.5 km (vertical). The generation unit is 1/8 orbit (1 frame).

EarthCARE/CPR/CPR_CLP数据集源自搭载于地球云气溶胶与辐射探测器（Earth Cloud Aerosol and Radiation Explorer，EarthCARE）卫星的云廓线雷达（Cloud Profiling Radar，CPR）传感器，由日本宇宙航空研究开发机构（Japan Aerospace Exploration Agency，JAXA）研制发布。EarthCARE卫星搭载四款核心观测传感器：云廓线雷达（Cloud Profiling Radar，CPR）、大气激光雷达（Atmospheric Lidar，ATLID）、多光谱成像仪（Multi-Spectral Imager，MSI）以及宽带辐射计（Broadband Radiometer，BBR）。EarthCARE的核心使命为全球范围内观测云与气溶胶的分布特征及垂直结构，同时监测大气层顶的辐射能量分布。本数据集相关项目旨在通过厘清云与气溶胶的行为模式及其对地球气候的影响，将相关研究成果融入数值气候模型，约束数值气候模型中云-气溶胶-辐射相互作用环节的巨大不确定性，进而提升气候变化预测的精准度。EarthCARE卫星于2024年5月28日（协调世界时UTC）成功发射。该卫星运行于高度约400公里的太阳同步回归轨道，回归周期为25天，观测覆盖范围大致涵盖南纬90度至北纬90度的全球区域。云廓线雷达（CPR）的垂直分辨率约为500米。在CPR的2A级标准处理流程中，以1B级产品作为输入数据源。该产品包含云水含量、云有效半径、云光学厚度、云掩码以及云粒子类型等核心观测信息。数据集同时以1公里与10公里的空间尺度进行整合发布。数据文件格式采用HDF5，同时兼容NetCDF4格式，文件结构分为头文件与科学数据两个部分。其采样分辨率为水平方向1公里、垂直方向0.5公里。数据以1/8轨道（1帧）为基本生成单元。