CMAQ Release Notes

This page contains links to Wiki pages describing current and past changes to the CMAQ system.

• Instrumented Models
• MPAS-CMAQ Coupled Model
• WRF-CMAQ Coupled Model
• Chemistry
• Transport Processes
• Dry Deposition/Air-Surface Exchange
• Emissions Updates
• Process Analysis & Sulfur Tracking Model (STM)
• Structural Improvements
• Diagnostic Options
• Pre-processors
• PYTOOLS
• Post-processors
• Utilities
• Stratospheric-Tropospheric Exchange (STE)

For a high level summary and comparison to previous versions please see the CMAQv5.4 Series FAQ.

To add new entries to the release notes Wiki Page please use the template below.

## Template
Find the appropriate section below.  Copy and fill out the following template with the information about your code change. Feel free to add additional topics or subtopics to improve the overall organization. 

### Title
[Contact name](mailto:contact.email@epa.gov), U.S. Environmental Protection Agency    
**Type of update**: [examples: Bug Fix, Science Update, Documentation, New Feature]   
**Release Version/Date**:  
**Description**:  
**Significance and Impact**:    
**References**: 

|Merge Commit | Internal record|
|:------:|:-------:|
|[Merge for PR#xxx](https://github.com/USEPA/CMAQ/commit/xxx - will be filled in by documentation team) | [PR#xxx](https://github.com/USEPA/CMAQ_Dev/pull/xxx)  |