Longitude data

[TCNasa]

I am using CAM. However, my longitude parameter (Lon) in my output history file is set from 1-360. This is inconsistent with my latitude parameter (lat) which is -90 to 90. How can I change my output longitude to to -180 to 180 for correct plotting?

 

[strandwg]

I am using CAM. However, my longitude parameter (Lon) in my output history file is set from 1-360. This is inconsistent with my latitude parameter (lat) which is -90 to 90. How can I change my output longitude to to -180 to 180 for correct plotting?

What plotting software are you using?

 

[TCNasa]

I am using Panoply. When I plot the "lon" field of my cam history file, it shows 1..360, but the "lat" field shows -90..90. This causes my plot to shift longitudinally.

 

[strandwg]

I am using Panoply. When I plot the "lon" field of my cam history file, it shows 1..360, but the "lat" field shows -90..90. This causes my plot to shift longitudinally.

I'm not familiar with Panoply, but longitude are cyclic, so it should be able to plot your data with any longitude range.

 

[TCNasa]

It plots the data fine. Problem is that data which should be at 90 degrees east (+90) shows up at 90 degrees west (-90) because the data is listed at 270 degrees instead of -90.

 

[TCNasa]

I mean it should be at +90 but is listed at 270

 

[strandwg]

I mean it should be at +90 but is listed at 270

Can you provide a screenshot that uses a field that's obviously incorrectly shifted?

 

[TCNasa]

I can't upload. File too large

 

[strandwg]

I can't upload. File too large

The screenshot is too large? Can you reduce its size?

 

[TCNasa]

No I can't.

 

[strandwg]

No I can't.

Please email me the screenshot, then. Thanks!

 

[TCNasa]

It should look like the left but it looks like the right

 

[strandwg]

I recommend checking the Panoply documentation.

 

[TCNasa]

Panoply is not the problem. The contents of the "lon" array in the CAM history file need to be -180 to 180 instead of 0 to 360. I don't know how to specify this.

 

[strandwg]

Panoply is not the problem. The contents of the "lon" array in the CAM history file need to be -180 to 180 instead of 0 to 360. I don't know how to specify this.

Perhaps someone who uses Panoply can chime in.