ERA5 is the fifth generation ECMWF atmospheric reanalysis of the global climate covering the period from January 1940 to present. ERA5 is produced by the Copernicus Climate Change Service (C3S) at ECMWF. ERA5 provides hourly estimates of a large number of atmospheric, land and oceanic climate variables.

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2021年3月8日 · era5是欧洲中期天气预报中心(ecmwf)的第五代全球气候和天气再分析产品，涵盖过去80年的数据。 数据 可从1940年开始获取， ERA 5 取代了 ERA -Interim再分析产品。

ERA5 is the fifth generation ECMWF atmospheric reanalysis of the global climate. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset. ERA5 replaces its predecessor, the ERA-Interim reanalysis.

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2019年7月12日 · ERA5-Land is a reanalysis dataset providing a consistent view of the evolution of land variables over several decades at an enhanced resolution compared to ERA5. ERA5-Land has been produced by replaying the land component of the ECMWF ERA5 climate reanalysis.

ERA5-Land provides hourly high resolution information of surface variables. The data is a replay of the land component o f the ER A5 climate reanalysis with a finer spatial resolution: ~9km grid spacing. ERA5-Land includes information about uncertainties for all variables at reduced spatial and temporal resolutions.

五个功能组，A、B、C、D、E，如A 组是系统、设备及零部件；B 组是测试、检验及生产设备。 每一物品按其所在类别和功能组均有一个特定出口管制分类代码（ECCN）。 每个代码都由五位数字及字母组成，每位数字或字母代表不同含义，其中包括产品类别、产品组别、一般管制理由、严格管制理由以及同类物品的序号。 该出口管制分类代码（ECCN）最重要的功能是用于判别某一物品是否为管制物品以及该管制物品的出口是否需要获得许可证。 另外，“管制物品”还包括运 …

2022年7月24日 · ERA5，全称为欧洲中期天气预报中心（European Centre for Medium-Range Weather Forecasts, ECMWF）的第五代再分析产品，是目前全球最先进且广泛使用的气候和气象数据集之一。它包含了从1950年至今的全球气象变量的...