CMAQv5.5 Series FAQ

Frequently Asked Questions for Upgrading to the Latest CMAQ Version

Table of Contents:

• Do I need to update from v5.4 to v5.5?
• What do I need to do to update from v5.4 to v5.5?
  • What differences should I expect in the required model input files?
  • What differences should I expect in my model output files?
• What differences should I expect in my model results with v5.5 compared to v5.4?
• Additional FAQ
• Technical support for CMAQ

Do I need to update from v5.4 to v5.5?

CMAQv5.4 is a major update from version 5.4 including many scientific enhancements and new features. See the v5.5 Release Notes for a description of each change.

Instrumented Models

WRF-CMAQ Coupled Model

Chemistry

Dry Deposition/Air Surface Exchange

Emissions

Process Analysis

Structural Improvements

Diagnostic Options

Pre-processors and Utilities

Post-processors

Utilities

What do I need to do to update from v5.4 to v5.5?

What differences should I expect in the required model input files?

What differences should I expect in my model output files?

What differences should I expect in my model results with v5.5 compared to v5.4?

Natural Emissions

Ozone

• Summary:

PM2.5

• Summary:

Deposition

• Summary:

Additional FAQ

A more general list of Frequent CMAQ Questions can be found on our website: https://www.epa.gov/cmaq/frequent-cmaq-questions

Technical support for CMAQ

Technical support for CMAQ, including questions about model inputs, downloading, compiling, and running the model, and pre- and post-processing utilities, should be directed to the CMAS Center User Forum. Please read and follow these steps prior to submitting new questions to the User Forum.