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

Running COMPS

The COMPS program is executed as follows:

This creates forecasts for a specific date (in YYYYMMDD format). In an operational setting, <date> would be today's date. <date> therefore represents the forecasts initialization date and not necessarily the date the forecasts are valid for. <runName> is the name of a run, which specifies what datasets are used to produce the forecasts, for which locations, and which post-processing schemes to use. You will learn how to specify your own runs in tutorial (2).

A tutorial run has been set up, which can be run as follows:

Note that here two dates are specified, which is a quick way to tell COMPS to produce forecast on all dates between 2012/01/01 and 2012/03/01, inclusive.

The tutorial run creates forecasts for 4 configurations:

Configuration	Description
Raw	Raw forecasts from an NWP model
Kalman filter	Raw forecasts with Kalman Filter bias-correction
Climatology	Uses any observation that is within +/- 15 days of forecast date
Persistence	Uses yesterday's observation for the same time of day

Forecasts and observations are created from a synthetic dataset, which simulates temperature with a diurnal and annual signal.