Tutorials

(1) Getting started

• Installing
• Running COMPS
• View results
• Exercises

(2) Namelists

• Overview
• Schemes
• Configurations
• Variables
• Variable/Configurations
• Runs
• Your own files
• Exercises

(3) Verification

• Overview
• Examples
• Exercises

(4) Input data

• Overview
• info.exe utility
• Download data
• Using existing data formats
• Exercises

(5) New schemes

• Overview
• Extending
• Example: Bias-corrector
• Adding a new data format
• Exercises

Download data

GFS forecasts data and METAR observations are available for download in COMPS. Scripts have been made to retrieve the data and store them in the appropriate folders. $COMPS/input/gfs/download $COMPS/input/rda336/download.

To use the download scripts, cd to the directory and run download with the ./download 20120101. To download multiple days, use the helper script $COMPS/bin/compsDownloadAll 20120101 20121231, which will download forecasts between Jan 1, 2012 to Dec 31, 2012. Modify the parameters in the download script to specify which forecast offsets to download.

Repeat the same procedure for the METAR data. This data requires you to register on http://rda.ucar.edu. Place the username and password in the download file before downloading.

To test that the data was downloaded correctly, run ./info.exe gfs or ./info.exe rda336.