问题
I am looking for a procedure to apply bilinear interpolation to change the resolution of netCDF file (1.5°x1.5°) ---> (1.25°x0.9375°)
Edit:
I have been reading some pages and I found a function called remapbil. It comes from Climate Data Operator (CDO). I tried to do the regrid but it did not work. This is my netCDF file info:
File format: netCDF
-1 : Institut Source Ttype Levels Num Gridsize Num Dtype : Parameter name
1 : unknown unknown instant 1 1 180 1 I16 : tp
Grid coordinates :
1 : lonlat > size : dim = 180 nx = 12 ny = 15
longitude : first = 279 last = 295.5 inc = 1.5 degrees_east
latitude : first = 15 last = -6 inc = -1.5 degrees_north
Vertical coordinates :
1 : surface : 0
Time coordinate : 324 steps
RefTime = 1900-01-01 00:00:00 Units = hours Calendar = standard
YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss
1979-01-01 03:00:00 1979-02-01 03:00:00 1979-03-01 03:00:00 1979-04-01 03:00:00
1979-05-01 03:00:00 1979-06-01 03:00:00 1979-07-01 03:00:00 1979-08-01 03:00:00
1979-09-01 03:00:00 1979-10-01 03:00:00 1979-11-01 03:00:00 1979-12-01 03:00:00
1980-01-01 03:00:00 1980-02-01 03:00:00 1980-03-01 03:00:00 1980-04-01 03:00:00
1980-05-01 03:00:00 1980-06-01 03:00:00 1980-07-01 03:00:00 1980-08-01 03:00:00
1980-09-01 03:00:00 1980-10-01 03:00:00 1980-11-01 03:00:00 1980-12-01 03:00:00
1981-01-01 03:00:00 1981-02-01 03:00:00 1981-03-01 03:00:00 1981-04-01 03:00:00
1981-05-01 03:00:00 1981-06-01 03:00:00 1981-07-01 03:00:00 1981-08-01 03:00:00
1981-09-01 03:00:00 1981-10-01 03:00:00 1981-11-01 03:00:00 1981-12-01 03:00:00
1982-01-01 03:00:00 1982-02-01 03:00:00 1982-03-01 03:00:00 1982-04-01 03:00:00
1982-05-01 03:00:00 1982-06-01 03:00:00 1982-07-01 03:00:00 1982-08-01 03:00:00
1982-09-01 03:00:00 1982-10-01 03:00:00 1982-11-01 03:00:00 1982-12-01 03:00:00
1983-01-01 03:00:00 1983-02-01 03:00:00 1983-03-01 03:00:00 1983-04-01 03:00:00
1983-05-01 03:00:00 1983-06-01 03:00:00 1983-07-01 03:00:00 1983-08-01 03:00:00
1983-09-01 03:00:00 1983-10-01 03:00:00 1983-11-01 03:00:00 1983-12-01 03:00:00
1984-01-01 03:00:00 1984-02-01 03:00:00 1984-03-01 03:00:00 1984-04-01 03:00:00
1984-05-01 03:00:00 1984-06-01 03:00:00 1984-07-01 03:00:00 1984-08-01 03:00:00
1984-09-01 03:00:00 1984-10-01 03:00:00 1984-11-01 03:00:00 1984-12-01 03:00:00
1985-01-01 03:00:00 1985-02-01 03:00:00 1985-03-01 03:00:00 1985-04-01 03:00:00
1985-05-01 03:00:00 1985-06-01 03:00:00 1985-07-01 03:00:00 1985-08-01 03:00:00
1985-09-01 03:00:00 1985-10-01 03:00:00 1985-11-01 03:00:00 1985-12-01 03:00:00
1986-01-01 03:00:00 1986-02-01 03:00:00 1986-03-01 03:00:00 1986-04-01 03:00:00
1986-05-01 03:00:00 1986-06-01 03:00:00 1986-07-01 03:00:00 1986-08-01 03:00:00
1986-09-01 03:00:00 1986-10-01 03:00:00 1986-11-01 03:00:00 1986-12-01 03:00:00
1987-01-01 03:00:00 1987-02-01 03:00:00 1987-03-01 03:00:00 1987-04-01 03:00:00
1987-05-01 03:00:00 1987-06-01 03:00:00 1987-07-01 03:00:00 1987-08-01 03:00:00
1987-09-01 03:00:00 1987-10-01 03:00:00 1987-11-01 03:00:00 1987-12-01 03:00:00
1988-01-01 03:00:00 1988-02-01 03:00:00 1988-03-01 03:00:00 1988-04-01 03:00:00
1988-05-01 03:00:00 1988-06-01 03:00:00 1988-07-01 03:00:00 1988-08-01 03:00:00
1988-09-01 03:00:00 1988-10-01 03:00:00 1988-11-01 03:00:00 1988-12-01 03:00:00
1989-01-01 03:00:00 1989-02-01 03:00:00 1989-03-01 03:00:00 1989-04-01 03:00:00
1989-05-01 03:00:00 1989-06-01 03:00:00 1989-07-01 03:00:00 1989-08-01 03:00:00
1989-09-01 03:00:00 1989-10-01 03:00:00 1989-11-01 03:00:00 1989-12-01 03:00:00
1990-01-01 03:00:00 1990-02-01 03:00:00 1990-03-01 03:00:00 1990-04-01 03:00:00
1990-05-01 03:00:00 1990-06-01 03:00:00 1990-07-01 03:00:00 1990-08-01 03:00:00
1990-09-01 03:00:00 1990-10-01 03:00:00 1990-11-01 03:00:00 1990-12-01 03:00:00
1991-01-01 03:00:00 1991-02-01 03:00:00 1991-03-01 03:00:00 1991-04-01 03:00:00
1991-05-01 03:00:00 1991-06-01 03:00:00 1991-07-01 03:00:00 1991-08-01 03:00:00
1991-09-01 03:00:00 1991-10-01 03:00:00 1991-11-01 03:00:00 1991-12-01 03:00:00
1992-01-01 03:00:00 1992-02-01 03:00:00 1992-03-01 03:00:00 1992-04-01 03:00:00
1992-05-01 03:00:00 1992-06-01 03:00:00 1992-07-01 03:00:00 1992-08-01 03:00:00
1992-09-01 03:00:00 1992-10-01 03:00:00 1992-11-01 03:00:00 1992-12-01 03:00:00
1993-01-01 03:00:00 1993-02-01 03:00:00 1993-03-01 03:00:00 1993-04-01 03:00:00
1993-05-01 03:00:00 1993-06-01 03:00:00 1993-07-01 03:00:00 1993-08-01 03:00:00
1993-09-01 03:00:00 1993-10-01 03:00:00 1993-11-01 03:00:00 1993-12-01 03:00:00
1994-01-01 03:00:00 1994-02-01 03:00:00 1994-03-01 03:00:00 1994-04-01 03:00:00
1994-05-01 03:00:00 1994-06-01 03:00:00 1994-07-01 03:00:00 1994-08-01 03:00:00
1994-09-01 03:00:00 1994-10-01 03:00:00 1994-11-01 03:00:00 1994-12-01 03:00:00
1995-01-01 03:00:00 1995-02-01 03:00:00 1995-03-01 03:00:00 1995-04-01 03:00:00
1995-05-01 03:00:00 1995-06-01 03:00:00 1995-07-01 03:00:00 1995-08-01 03:00:00
1995-09-01 03:00:00 1995-10-01 03:00:00 1995-11-01 03:00:00 1995-12-01 03:00:00
1996-01-01 03:00:00 1996-02-01 03:00:00 1996-03-01 03:00:00 1996-04-01 03:00:00
1996-05-01 03:00:00 1996-06-01 03:00:00 1996-07-01 03:00:00 1996-08-01 03:00:00
1996-09-01 03:00:00 1996-10-01 03:00:00 1996-11-01 03:00:00 1996-12-01 03:00:00
1997-01-01 03:00:00 1997-02-01 03:00:00 1997-03-01 03:00:00 1997-04-01 03:00:00
1997-05-01 03:00:00 1997-06-01 03:00:00 1997-07-01 03:00:00 1997-08-01 03:00:00
1997-09-01 03:00:00 1997-10-01 03:00:00 1997-11-01 03:00:00 1997-12-01 03:00:00
1998-01-01 03:00:00 1998-02-01 03:00:00 1998-03-01 03:00:00 1998-04-01 03:00:00
1998-05-01 03:00:00 1998-06-01 03:00:00 1998-07-01 03:00:00 1998-08-01 03:00:00
1998-09-01 03:00:00 1998-10-01 03:00:00 1998-11-01 03:00:00 1998-12-01 03:00:00
1999-01-01 03:00:00 1999-02-01 03:00:00 1999-03-01 03:00:00 1999-04-01 03:00:00
1999-05-01 03:00:00 1999-06-01 03:00:00 1999-07-01 03:00:00 1999-08-01 03:00:00
1999-09-01 03:00:00 1999-10-01 03:00:00 1999-11-01 03:00:00 1999-12-01 03:00:00
2000-01-01 03:00:00 2000-02-01 03:00:00 2000-03-01 03:00:00 2000-04-01 03:00:00
2000-05-01 03:00:00 2000-06-01 03:00:00 2000-07-01 03:00:00 2000-08-01 03:00:00
2000-09-01 03:00:00 2000-10-01 03:00:00 2000-11-01 03:00:00 2000-12-01 03:00:00
2001-01-01 03:00:00 2001-02-01 03:00:00 2001-03-01 03:00:00 2001-04-01 03:00:00
2001-05-01 03:00:00 2001-06-01 03:00:00 2001-07-01 03:00:00 2001-08-01 03:00:00
2001-09-01 03:00:00 2001-10-01 03:00:00 2001-11-01 03:00:00 2001-12-01 03:00:00
2002-01-01 03:00:00 2002-02-01 03:00:00 2002-03-01 03:00:00 2002-04-01 03:00:00
2002-05-01 03:00:00 2002-06-01 03:00:00 2002-07-01 03:00:00 2002-08-01 03:00:00
2002-09-01 03:00:00 2002-10-01 03:00:00 2002-11-01 03:00:00 2002-12-01 03:00:00
2003-01-01 03:00:00 2003-02-01 03:00:00 2003-03-01 03:00:00 2003-04-01 03:00:00
2003-05-01 03:00:00 2003-06-01 03:00:00 2003-07-01 03:00:00 2003-08-01 03:00:00
2003-09-01 03:00:00 2003-10-01 03:00:00 2003-11-01 03:00:00 2003-12-01 03:00:00
2004-01-01 03:00:00 2004-02-01 03:00:00 2004-03-01 03:00:00 2004-04-01 03:00:00
2004-05-01 03:00:00 2004-06-01 03:00:00 2004-07-01 03:00:00 2004-08-01 03:00:00
2004-09-01 03:00:00 2004-10-01 03:00:00 2004-11-01 03:00:00 2004-12-01 03:00:00
2005-01-01 03:00:00 2005-02-01 03:00:00 2005-03-01 03:00:00 2005-04-01 03:00:00
2005-05-01 03:00:00 2005-06-01 03:00:00 2005-07-01 03:00:00 2005-08-01 03:00:00
2005-09-01 03:00:00 2005-10-01 03:00:00 2005-11-01 03:00:00 2005-12-01 03:00:00
Then, my problem is that I don not know how to type the target grid such this:
cdo remapbil,r180x360 input_file.nc output_file.nc
I will really appreciate your help.
来源：https://stackoverflow.com/questions/33268588/how-to-regrid-a-netcdf-using-bilinear-interpolation