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Questions tagged [grib]

GRIB is a binary format for storing spatial information, used most often in meteorology. Use this tag for questions about programmatically encoding and/or decoding data to/from GRIB files.

GRIB is binary file format defined by the World Meteorological Organization (WMO). It is a compact format for storing gridded meteorological data such as air temperature or pressure. There are two major versions of the format: GRIB1 and GRIB2.

Selected tools and interfaces

References

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RNomad to process grib2 files in R is taking too long

We are trying to read a grib2 containing weather forecast with 13 variables at one pressure level for 6 lat/long for one day. The grib2 file is 62mb. To read one variable of hourly data for one day it takes about an hour, particularly ReadGrib. …
user2043446
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Grid How To Convert Lambert Conformal To Latitude/Longitude

I have a grib data about WRF. The grid definition template number is 30 ( Lambert Conformal ) But now, I need to convert this lambert conformal to 0 ( Latitude/Longitude ) Is there possible?
Frank Liao
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Pygrib Open encoding error

I'm trying to get pygrib to work in Python 3.5. I have imported it in my program, I have assigned the grib file to a variable (grib). But when I try to run the command: grbs=pygrib.open(grib) I get the following error: File "", line 1, in …
Stephane
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Problems when i convert Grib2 to Netcdf4

I got some problems when i try to convert some grib files form CFSR. when i use ncl_convert2ncin the unix shell, the nc file information is like this : netcdf flxf01.gdas.197901 { dimensions: ygrid_0 = UNLIMITED ; // (0 currently) …
Yuhang Pan
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Converting .grib files to .nc files with python script?

I am a beginner with python and looking for a python script to convert .grib files to .nc by following a path to the directory, where the file exist. I know about cdo command lines and the ncl script. However, since the number of data files are…
K S
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Convert grib files to text files with Python

I want to read many grib files from a folder, and then save as text files. The name of the text file will be same name as grib file. My code: import pygrib, os, glob LAT1 = None LAT2 = None LON1 = None LON2 = None def process_message(grb,…
user1032066
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Select the right Azure technologies to store and to process weather forecasts data

I would like to download FTP files from NCEP GFS (Weather Forecasts data provider) and extract some parameters from them. After filtering (I need only temperatures and precipitations), I have roughly 1 GB of data in the GRIB format (binary) per day.…
RudyCo
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Iterating grib tools over a folder of grib files

I am attempting to mass-convert a large number of GRIB files to netCDF using grib tools (I am on Windows 7) in a batch file. I am using this code: for /f %%f in (`dir /b O:\Praksa\incadata\2014\01\01`) do echo %%f grib_to_netcdf -D…
peroman200
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Iris for Anaconda, fails to read .grib

I've just downloaded Iris and am trying to view the contents of a .grib file. I have tried a very simple bit of code below but get a selection of errors. Can anyone see what might be causing the problems? Thanks import…
squar_o
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Cannot save to grib2 file using python iris module

I'm using the python iris module to read in some netCDF data and output specific fields in grib format for further downstream processing. However I generate the following error …
fluids_guru
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How to transform Lambert Conformal Conic projection to lat/lng decimal points with NetCDF in Java

I am using the NetCDF 4 java library from unidata to read GRIB files. GRIB files structure looks like this: dimensions: x = 401; y = 301; time = 1; variables: int LambertConformal_Projection; :grid_mapping_name =…
Gerd Ponjavic
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Reading GRiB2 files using NCTOOLBOX in Matlab,

I try to open CFSR gridded binary edition 2 (grb2) precipitation file downloaded from ucar.edu using NCTOOLBOX. However I got error messages: "nc=ncgeodataset('prate.gdas.200812.grb2') Error using ncdataset (line 91) Failed to open…
Haihong Zhao
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Plotting global sea surface temperatures on MATLAB

I am trying to plot global sea surface temperatures for April 2015 on MATLAB using JMA's dataset in GRiB format. I have also installed the nctoolbox and m_map toolboxes. Below is my code: !wget…
electroniclearner
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wgrib2 and egrep to isolate out parameters

I have a grib file of such where when I do wgrib2 on it, I have the following parameters: wgrib2 xxx.grib2 5:211198:d=2015021300:HGT:10 mb:anl: 6:262648:d=2015021300:TMP:10 mb:anl: 7:283996:d=2015021300:RH:10 mb:anl: 8:292394:d=2015021300:UGRD:10…
jms1980
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Grads plotting data from different files (different points of time) in one 2D (height – time) plot

I downloaded data from the american gfs weather modell (from ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2014101812/master, edit date if you read more than 1 month later). Those are grib-files. I am using grads to plot data and it works…
Dremet
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