Longitude settings

[TCNasa]

How do I specify the CAM history files to use longitude values of -180 to 180. I'm running with the FCnudged dataset with the 192x288 output grid and the lon values are 0 to 360.

 

[erik]

Tom, I'm going to move this issue over the CAM forum. In general CESM is configured to be on the 0 to 360 longitude grid, so I'm not sure you can do this. But, I'll let the CAM community answer the question.

 

[cacraig]

If you need to change the way that longitudes are stored in your file after it is created, I would suggest you use nco operators to change the values in the longitude variable inside your file. The User's Guide for nco is at: http://nco.sourceforge.net/nco.pdf

The page labeled 72 in this PDF describes doing the opposite, taking a file that has -180 to 180 and converting to 0 to 360. You should be able to modify the commands appropriately to get the file with the values you want.

 

[strandwg]

How do I specify the CAM history files to use longitude values of -180 to 180. I'm running with the FCnudged dataset with the 192x288 output grid and the lon values are 0 to 360.

Using Panoply 5.0.5 on a Mac I've been able to create a lat/lon plot of TS from a CESM2 run, with the longitude data going from 0E to 360E. I've also been able to change the center longitude to 180E and properly plot the TS field.