GRIB数据和netCDF数据之间的关系

大气杨娃娃

WRF模式的可以输入GRIB1和GRIB2格式的数据文件进行数值计算模拟。请问WRF输出的.nc文件的数据是netCDF格式还是GRIB格式呢？WRF模式是不是可以控制输出GRIB格式和netCDF格式的数据文件吗？他们之间到底是什么关系呢？

WWW

GRIB (GRIdded Binary) is a mathematically concise data format commonly used in meteorology to store historical and forecast weather data. It is standardized by the World Meteorological Organization's Commission for Basic Systems, known under number GRIB FM 92-IX, described in WMO Manual on Codes No.306. Currently there are three versions of GRIB. Version 0 was used to a limited extent by projects such as TOGA, and is no longer in operational use. The first edition (current sub-version is 2) is used operationally worldwide by most meteorological centers, for Numerical Weather Prediction output (NWP). A newer generation has been introduced, known as GRIB second edition, and data is slowly changing over to this format. Some of the second-generation GRIB are used for derived product distributed in Eumetcast of Meteosat Second Generation. Another example is the NAM (North American Mesoscale) model.
NetCDF (Network Common Data Form) is a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data. The project homepage is hosted by the Unidata program at the University Corporation for Atmospheric Research (UCAR). They are also the chief source of netCDF software, standards development, updates, etc. The format is an open standard. NetCDF Classic and 64-bit Offset Format are an international standard of the Open Geospatial Consortium

The answer is From Wikipedia.

天目神眉

WRF输出的.nc文件的数据在默认的情况下，是netCDF格式。应该在namelist.input里有设置，只是我还没关注到。至于他们之间的关系，就不太清楚了，应该就是存放规则不一样吧

godenflame135

嗯，除了存放规则不一样，文件大小也不一样。grib格式的文件容量更大些！

chenxiong

WRF输出的.nc文件的数据在默认的情况下，是netCDF格式。

lyly1394

谢谢楼主非常实用

296398368

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