NCEP Climate Forecast System Version 2 (CFSv2) Selected Hourly Time-Series Products

The National Centers for Environmental Prediction (NCEP) Climate Forecast System (CFS) is initialized four times per day (0000, 0600, 1200, and 1800 UTC). NCEP upgraded CFS to version 2 on March 30, 2011. This is the same model that was used to create the NCEP Climate Forecast System Reanalysis (CFSR).Selected CFS time series products are those that are expected to be most useful to users of the dataset, but the products here are by no means an exhaustive compilation of all of the possible products that could be created from the full 6-hourly CFS dataset [https://rda.ucar.edu/datasets/ds094.0/].The products here are available at 0.2, 0.5, 1.0, and 2.5 degree horizontal resolutions at hourly intervals by combining either 1) the analysis and one- through five-hour forecasts, or 2) the one- through six-hour forecasts, for each initialization time. Beginning with January 1, 2011, these data are archived as an extension of CFSR.The files in this dataset are grouped by month, so data for a particular month are not available until a few days into the subsequent month. If you need data for the current month, please consult the CFSv2 dataset that contains the complete suite of 6-hourly products.For more information about CFS, please see http://cfs.ncep.noaa.gov/ [http://cfs.ncep.noaa.gov/].

美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）气候预报系统（Climate Forecast System, CFS）每日执行四次初始化，对应协调世界时（UTC）的0000、0600、1200及1800时。美国国家环境预报中心于2011年3月30日将CFS升级至第2版（CFSv2），该系统与用于构建NCEP气候预报系统再分析资料（Climate Forecast System Reanalysis, CFSR）的模型完全一致。

本数据集所遴选的CFS时间序列产品，均为面向数据集用户需求筛选出的高实用性产品，但本数据集提供的产品绝非覆盖了基于完整6小时分辨率CFS数据集可生成的全部品类[https://rda.ucar.edu/datasets/ds094.0/]。

本次提供的产品可提供0.2°、0.5°、1.0°及2.5°的水平分辨率，时间间隔为逐小时，其生成方式为针对每个初始化时刻，选取1) 分析场与1至5小时预报场，或2) 1至6小时预报场进行融合。自2011年1月1日起，此类数据将作为CFSR的延伸资料进行归档存储。

本数据集的文件按月份进行分组，因此特定月份的完整数据需等到次月的数日后方可获取。若需获取当月的实时数据，请查阅包含全套6小时分辨率产品的CFSv2数据集。

如需了解CFS的更多信息，请访问http://cfs.ncep.noaa.gov/ [http://cfs.ncep.noaa.gov/]。

搜集汇总

背景与挑战

背景概述

该数据集是NCEP气候预测系统版本2（CFSv2）的选定每小时时间序列产品，提供从2011年1月1日开始的全球气象数据，每月更新，包含气温、降水、辐射等30多个变量，以0.2°至2.5°多种水平分辨率的每小时网格数据形式存储，适用于气候分析和预测研究。数据集基于CFSv2模型，是CFSR的扩展，数据格式为WMO GRIB2，总容量达3.88 TB，覆盖全球范围，为气象和气候科学社区提供了高时间分辨率的关键观测和模拟产品。