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◎ China's First-Generation Global Atmospheric Reanalysis Products (CRA-40)- Daily Products

The Chinese Global Atmospheric Reanalysis (CRA-40) system operates with a model that has a horizontal resolution of T574, which translates to roughly 34 km. In the vertical axis, it incorporates 64 hybrid σ-pressure levels, with the model’s apex set at 0.27 hPa, corresponding to an altitude of approximately 55 km. The system employs a three-dimensional variational assimilation technique. The atmospheric reanalysis products are offered at five horizontal resolutions: 34 km, 0.25°, 0.5°, 1°, and 2.5°, and are available at three different time scales: every 6 hours, daily, and monthly. The products cover a comprehensive range of variables, including those related to the atmosphere, land surface, and oceans, amounting to a total of 204 variables. Testing and evaluation have confirmed the reliability of the data quality and the effectiveness of the products for various applications.

  • Name
  • China's First-Generation Global Atmospheric Reanalysis Products (CRA-40)- Daily Products 
  • Keywords
  • Absolute vorticity, cloud ice, cloud mixing ratio, geopotential height, icing rate, degree of icing, ozone mixing ratio, relative humidity, specific humidity, single layer analysis variable, single layer analysis variable, single layer 6-hour cumulative variable, temperature, vertical velocity, wind speed, day 
  • Area Scope
  • Global 
  • Making time
  • Irregular 
  • Begin Time
  • January 1, 1979 
  • End Time
  • recent 
  • Frequency
  • Irregular 
  • Share Level
  • Ordinary reg. user access 
  • Quality
  • Testing and evaluation have confirmed the reliability of the data quality and the effectiveness of the products for various applications. 
  • DataSource
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