Scheduled Downtime
On Tuesday 24 October 2023 @ 5pm MT the forums will be in read only mode in preparation for the downtime. On Wednesday 25 October 2023 @ 5am MT, this website will be down for maintenance and expected to return online later in the morning.
Normal Operations
The forums are back online with normal operations. If you notice any issues or errors related to the forums, please reach out to


The Community Terrestrial Systems Model and river runoff models including the Community Land Model (CLM5.0 and CLM4.5), RTM and MOSART of the Community Earth System Model. Descriptions and details are available at and

This forum is also for help with CTSM in other atmosphere models, such as WRF via LILAC