有没有办法裁剪NETCDF文件？-IsthereawaytocropaNETCDFfile?

9  

Yes, using ncks from the NCO package: http://nco.sourceforge.net/nco.html

是的,使用NCO包中的ncks:http://nco.sourceforge.net/nco.html

You'll need to know the indices corresponding to the lat/lon range you want. Let's say they are 30-40 in latitude and 25-50 for longitude. Then you could crop the netCDF file with

您需要知道与您想要的纬度/经度范围对应的指数。假设它们在纬度为30-40,经度为25-50。然后你可以裁剪netCDF文件

ncks -d lat,30,40 -d lon,25,50 example.nc -O cropped_example.nc

2  

NCO works fine, but just to list an alternative, one can also do it using cdo (climate data operators), which I find easier to remember and means you can specify directly the longitude and latitude values:

NCO工作正常,但只是列出一个替代方案,也可以使用cdo(气候数据运算符)来实现,我发现它更容易记住,并且意味着您可以直接指定经度和纬度值:

cdo sellonlatbox,lon1,lon2,lat1,lat2 infile.nc outfile.nc

where lon1,lon2,lat1,lat2 define the boundaries of the area you require. If you don't have it already installed you can get it on Ubuntu with

其中lon1,lon2,lat1,lat2定义了所需区域的边界。如果你还没有安装它,你可以在Ubuntu上使用它

sudo apt-get install cdo

cdo has many other functions for processing, combining and splitting files and an excellent online documentation.

cdo还有许多其他功能,用于处理,组合和拆分文件以及优秀的在线文档。

Note that for CDO to work the coordinate variables (lat/lon) need to be defined according to CDF conventions. The ncks approach is much more robust as it cuts for any axis, but you need to work out the index.

请注意,要使CDO工作,需要根据CDF约定定义坐标变量(lat / lon)。 ncks方法更加强大,因为它可以切割任何轴,但您需要计算索引。