How to retrieve longitude and latitude value from a NetCDF variable?

Question

I have read a netcdf file of observed climate data and I would like to plot some species locality data (latitude/longitude coordinate points)

Is the longitude & latitude value will be change based on NetCDF variables ?

Cynthia GS · Accepted Answer · 2016-04-07 15:04:41Z

1

If all your variables are in the same netcdf file, they will all share the same coordinates system, and the lat and long are available in their own subfile within your netcdf file.

answered Apr 7, 2016 at 15:04

Cynthia GS

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6 Comments

Deepak Renni Over a year ago

Thank Cynthia. Do u know matrix order of storing data in NetCDF file ?

Cynthia GS Over a year ago

Latitude is usually 90 to -90, but for longitude, I found that it varies: either 0 to 360 or -180 to 180, but it's usually easy to find out which one (Half of the world might be missing if you use the wrong coordinate system, see: stackoverflow.com/questions/36070153/…)

Deepak Renni Over a year ago

I tired this NetCDF dataset - esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep/… but the actual result is like : rhum.rhum[365][73][144] [0][0], -23626, -23626, -23626, -23626, -23626, -23626, -23626. I didn't getting this results when am using Spark

Cynthia GS Over a year ago

I don't use Spark, so not sure why there should be a difference, but your grid is probably not at 1deg resolution, so I'm guessing that the 73 and 144 are you lat and long? The link you shared doesn't work.

Deepak Renni Over a year ago

i will send up the updated link : esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep/….

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