NETCDF FORTRAN未能以NETCDF文件为单位hdf nf90_open

发布于 2025-01-22 07:13:49 字数 843 浏览 6 评论 0原文

与风分析有关CCMP_WIND_ANALYSIS__YYYYMMDD_V02.0_L3.0_RSS.NC从FTP.SSMI.com下载。

NetCDF Fortran库成功地开放了气候学，但没有提供提供的示例代码的单个每日数据。

program open
  USE netcdf
  IMPLICIT NONE
  INTEGER(KIND=4) :: ierr  !Open netCDF file 
  ierr=nf90_open(path='infile', mode=nf90_nowrite, ncid=ncid)
  ierr=nf90_close(ncid)
end program open

它返回了

error code -51, "NetCDF: Unknown file format "

失败的文件似乎是由Matlab创建的，它的版本是NetCDF-4经典模型

$ ncdump -k Data/CCMP/200408/CCMP_Wind_Analysis_20040801_V02.0_L3.0_RSS.nc
$ netCDF-4 classic model

，气候是由IDL创建的，它的版本是Clasic，

$ ncdump -k Data/CCMP/CCMP_Wind_Analysis_climatology_V02.0_L3.5_RSS.nc
$ classic

每天和气候数据都可以由NCDUMP或GRADS打开，但我想二进制dump。每日数据，如果我可以使用fortran，则会更快。

有人知道为什么以及如何解决它吗？

提前致谢。

原文

I am having a problem dealing with wind analysis CCMP_Wind_Analysis_yyyymmdd_V02.0_L3.0_RSS.nc downloaded from ftp.ssmi.com.

NetCDF fortran library successfully opened the climatology but not the individual daily data with the provided sample code.

program open
  USE netcdf
  IMPLICIT NONE
  INTEGER(KIND=4) :: ierr  !Open netCDF file 
  ierr=nf90_open(path='infile', mode=nf90_nowrite, ncid=ncid)
  ierr=nf90_close(ncid)
end program open

It returned

error code -51, "NetCDF: Unknown file format "

The failed file seems created by Matlab and it's version was netCDF-4 classic model

$ ncdump -k Data/CCMP/200408/CCMP_Wind_Analysis_20040801_V02.0_L3.0_RSS.nc
$ netCDF-4 classic model

and climatology was created by IDL and it's version was clasic

$ ncdump -k Data/CCMP/CCMP_Wind_Analysis_climatology_V02.0_L3.5_RSS.nc
$ classic

The both daily and climatology data can be opened by ncdump or by grads, but I want to binary dump the daily data and it's much faster if I can use fortran.

Does anyone know why and how it can be solved?

Thanks in advance.

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梦一生花开无言 2025-01-29 07:13:49

您的Fortran代码似乎很可能链接到NetCDF经典库，而不是NetCDF4库。 NetCDF4库将产生以下对nf-config的响应：

zender@spectral:~$ nf-config

This  4.5.3 has been built with the following features: 

  --cc        -> clang
  --cflags    -> -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include  -fPIC -g -Wall -Wno-unused-variable -Wno-unused-parameter -O2 

  --fc        -> /opt/homebrew/bin/gfortran
  --fflags    -> -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include
  --flibs     -> -L/opt/homebrew/Cellar/netcdf/4.8.1_1/lib -lnetcdff -lnetcdf
  --has-f90   -> TRUE
  --has-f03   -> yes

  --has-nc2   -> yes
  --has-nc4   -> yes

  --prefix    -> /opt/homebrew/Cellar/netcdf/4.8.1_1
  --includedir-> /opt/homebrew/Cellar/netcdf/4.8.1_1/include
  --version   ->  4.5.3

zender@spectral:~$

确保- has-nc4 - ＆gt;是不是- ＆gt;否。

It seems most likely that your Fortran code is linked to a netCDF classic library, not a netCDF4 library. A netCDF4 library will produce something like the following response to nf-config:

zender@spectral:~$ nf-config

This  4.5.3 has been built with the following features: 

  --cc        -> clang
  --cflags    -> -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include  -fPIC -g -Wall -Wno-unused-variable -Wno-unused-parameter -O2 

  --fc        -> /opt/homebrew/bin/gfortran
  --fflags    -> -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include -I/opt/homebrew/Cellar/netcdf/4.8.1_1/include
  --flibs     -> -L/opt/homebrew/Cellar/netcdf/4.8.1_1/lib -lnetcdff -lnetcdf
  --has-f90   -> TRUE
  --has-f03   -> yes

  --has-nc2   -> yes
  --has-nc4   -> yes

  --prefix    -> /opt/homebrew/Cellar/netcdf/4.8.1_1
  --includedir-> /opt/homebrew/Cellar/netcdf/4.8.1_1/include
  --version   ->  4.5.3

zender@spectral:~$

Make sure that --has-nc4 -> yes not -> no.

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