International Satellite Cloud Climatology Project (ISCCP) Climate Data Record, H-Series

The International Satellite Cloud Climatology Project (ISCCP) focuses on the distribution and variation of cloud radiative properties to improve the understanding of the effects of clouds on climate, the radiation budget, and the long-term global hydrologic cycle. The ISCCP H-Series Climate Data Record consists of several parts: (1) ISCCP H-Series dataset, (2) ISCCP-Basic H-Series, and (3) Ancillary and input datasets. ISCCP H Series data The full ISCCP dataset consists of netCDF files containing various derived cloud parameters. The H-Series data includes several products. These include: * HXS (H-series pixel level single satellite - not in netcdf), * HXG (H-series pixel level gridded), * HGG (H-series Gridded Global), * HGH (H-series gridded monthly by hour), and * HGM ( H-series Gridded Monthly). The netCDF files are not structured with CF-standard names. Data variables are unitless and rely on data tables that are needed to represent each geophysical variable. Keeping ISCCP H-Series in this native format ensures that existing "power users" will be able to continue using the data. ISCCP Basic H Series ISCCP Basic files contains a subset of the cloud variables and products available in the full ISCCP dataset. It consists of remapped, calibrated, and subsetted variables following CF-conventions. In addition, the netCDF files follow full netCDF CF and ACDD Conventions. These files are intended to be use by new and/or less advanced users that may want to use cloud data, but do not need the full ISCCP dataset. Ancillary and Input data Ancillary and Input data used in the production of ISCCP are also archived. These consist of B1U geostationary satellite data, B1U and GAC calibration/HBT tables, and ancillary files for nnHIRS, AEROSOL, SNOWICE, and OZONE datasets.国际卫星云气候学计划（International Satellite Cloud Climatology Project, ISCCP）聚焦于云辐射特性的分布与变化，以期加深对云在气候、辐射收支及长期全球水文循环中所产生影响的理解。 ISCCP H系列气候数据记录包含三个组成部分： (1) ISCCP H系列数据集 (2) ISCCP基础H系列数据集 (3) 辅助与输入数据集 ISCCP H系列数据 完整的ISCCP数据集由搭载各类衍生云参数的网络通用数据格式（netCDF）文件构成。H系列数据包含多款产品，具体包括： * HXS（H系列像素级单卫星数据——非netCDF格式） * HXG（H系列像素级网格化数据） * HGG（H系列全球网格化数据） * HGH（H系列逐小时网格化月度数据） * HGM（H系列网格化月度数据） 此类netCDF文件未遵循CF标准命名规范，数据变量无单位，需依托专用数据表来表征各项地球物理变量。保留ISCCP H系列的原生格式，可确保现有“资深用户”能够继续使用该数据集。 ISCCP基础H系列数据集 ISCCP基础文件包含完整ISCCP数据集中的部分云变量与产品。其包含经过重映射、定标与子集筛选处理的变量，且严格遵循CF公约规范。此外，这些netCDF文件完全符合netCDF CF与ACDD公约标准。此类文件专为希望使用云数据但无需完整ISCCP数据集的新用户或经验相对不足的用户设计。 辅助与输入数据 ISCCP生产流程中使用的辅助与输入数据同样已完成归档，具体包括B1U对地静止卫星数据、B1U与GAC定标/HBT数据表，以及用于nnHIRS、气溶胶、冰雪与臭氧数据集的辅助文件。