The http protocol allows 'random access' reading;however, that means that we need an index file and a httpprogram that supports random access. For the index file, wecan modify a wgrib2 inventory. For the random-access http(s) program, wecan use cURL. Both are freelyavailable, widely used, work on many platforms and are easilyscripted/automated/put into a cronjob.
The basic format of the quick download is,
get_inv.pl INV_URL | grep (options) FIELDS | get_grib.pl GRIB_URL OUTPUT
INV_URL is the URL of a wgrib/wgrib2 inventory
ex. https://nomad3.ncep.noaa.gov/pub/gfs/rotating/gblav.t00z.pgrbf12.inv
grep (options) FIELDS selects the desired fields (wgrib compatible)
ex. grep -F ':HGT:500 mb:' selects ':HGT:500 mb'
ex. grep -E ':(HGT|TMP):500 mb:' selects ':HGT:500 mb:' and ':TMP:500 mb:'
GRIB_URL is the URL of the grib file
ex. https://nomad3.ncep.noaa.gov/pub/gfs/rotating/gblav.t00z.pgrbf12
OUTPUT is the name of the for the downloaded grib file
INV_URL is the URL of a wgrib/wgrib2 inventory
ex. https://nomad3.ncep.noaa.gov/pub/gfs/rotating/gblav.t00z.pgrbf12.inv
grep (options) FIELDS selects the desired fields (wgrib compatible)
ex. grep -F ':HGT:500 mb:' selects ':HGT:500 mb'
ex. grep -E ':(HGT|TMP):500 mb:' selects ':HGT:500 mb:' and ':TMP:500 mb:'
GRIB_URL is the URL of the grib file
ex. https://nomad3.ncep.noaa.gov/pub/gfs/rotating/gblav.t00z.pgrbf12
OUTPUT is the name of the for the downloaded grib file
Ugrib 0.2.4.0 is a freeware application that allows instant access to global weather data. Through the interface you can download and view weather data on your desktop. Grib is the format that the meteorological institutes around the world use to transport and manipulate weather data. Grads.exe, gradsc.exe, gradsgui.exe or gv32.exe are the default file names to indicate this program's installer. Our built-in antivirus checked this download and rated it as 100% safe. The program is included in Education Tools. The most popular versions among the software users are 2.0 and 1.9. Mar 03, 2020 You can define an area by pressing and dragging the mouse over it. Then, you will be able to download the GRIB file with the data pertaining to that area. The first time you download a data file, the program will ask you an email address, in order to validate your login. You will have to setup the download folder prior to downloading anything. Download Latest Version grads-2.0.a8.oga.1-bundle.tar.gz (15.5 MB) Get Updates. Get project updates, sponsored content from our select partners, and more.
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The 'get_inv.pl INV_URL' downloads the wgrib inventory off the net and addsa range field. The 'grep FIELDS' uses the grep command to select desiredfields from the inventory. Use of the 'grep FIELDS' is similar to theprocedure used when using wgrib/wgrib2 to extract fields. The 'get_grib.plGRIB_URL OUTPUT' uses the filtered inventory to select the fieldsfrom GRIB_URL to download. The selected fields are saved in OUTPUT.
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HOME MonitoringandData Oceanic and Atmospheric Data Reanalysis: Atmospheric Data WGRIB: wgrib. WGRIB is a program to manipulate, inventory and decode GRIB files. The program is known to work on machines ranging from 486s to Cray supercomputers.