ecmwf / cfgrib

A Python interface to map GRIB files to the NetCDF Common Data Model following the CF Convention using ecCodes
Apache License 2.0
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Wrong latitude and longitude #368

Closed fedecutraro closed 9 months ago

fedecutraro commented 9 months ago

What happened?

Hello, I'm trying to use cfgrib to open a grib file created with the Unified Post Processor (UPP) but the latitudes and longitudes I get are wrong. The domain has to be over Argentina and for example, the latitudes are from the northern hemisphere.

When I use pygrib or Panoply to open the same file the latitudes and longitudes are correct.

What are the steps to reproduce the bug?

import xarray as xr ds = xr.open_dataset('wrfprs_20240205_0000.012', engine = 'cfgrib') print(ds['latitude'].values)

Version

0.9.10.1

Platform (OS and architecture)

Red Hat Enterprise Linux Server 7.6 (Maipo)

Relevant log output

No response

Accompanying data

https://drive.google.com/file/d/1PUN9YqLHmBkw1Y7ymryhOKZZGzRC4HE2/view?usp=sharing

Organisation

No response

shahramn commented 9 months ago

This is a problem in the ecCodes Geoiterator for Lambert Conformal grids in the southern hemisphere. I will start working on a fix. Thanks for reporting this issue

shahramn commented 9 months ago

This has now been fixed in the ecCodes library and will be released in the next couple of months