Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA home page National Weather Service   NWS logo - Click to go to the NWS home page
Climate Prediction Center
 
 

CPC Search
About Us
   Our Mission
   Who We Are

Contact Us
   CPC Information
   CPC Web Team

 
HOME > Monitoring and Data > Oceanic & Atmospheric Data > Meteorlogical Data Servers
 
 
Sample Downloading Script for NARR data at NCDC
 
At my presentation at the North American Regional Reanalysis (NARR) user's group meeting (San Diego, January 11, 2005), I said that I would make available a sample script that will download NARR data from the NCDC's ftp4u servers. The script was long and ugly and I suspected that an easier and faster method was possible. Didn't have time before the meeting to test my hunch. My hunch was right, so this is the suggested method for obtaining NARR grib data. NCDC has developed a simple-to-use perl script to get selected subsets of NARR grib data using this technique.

Example script:
----------------------------------------------------
#!/bin/sh
# download selected variables from NARR 19790102-09Z merged-a data from NCDC

yymm=197901
date=19790102
hr=09

a="http://nomads.ncdc.noaa.gov/data/narr/$yymm/$date/narr-a_221_${date}_${hr}00_000"
get_inv.pl $a.inv | egrep ":(HGT|TMP):500 mb" | get_grib.pl $a.grb out.grb
echo "finished downloading 500 mb height and temperature"
----------------------------------------------------

Dan Swank (NCDC) wrote a nice wrapper using get_inv/get_grib for the NARR data. His perl script shows how easy data access should be.

http://nomads.ncdc.noaa.gov/ncdc-ui/get-httpsubset.pl

comments: Wesley.Ebisuzaki@noaa.gov

NOAA/ National Weather Service
National Centers for Environmental Prediction
Climate Prediction Center
5830 University Research Court
College Park, Maryland 20740
Climate Prediction Center Web Team
Page last modified: November 5, 2002
Disclaimer Privacy Notice

Privacy Policy