Merge branch '2026-03-arctic' of github.com:NCEAS/nceas-training into 2026-03-arctic

Author: jeanetteclark

materials/images/arctic-data-center/adc-homepage-2026.png

@@ -75,7 +75,7 @@ A step-by-step guide on how to navigate the Arctic Data Center and create a new
 
 If you are on the [Arctic Data Center's primary website](http://arcticdata.io/), select the button on the top right titled 'Sign in with ORCID'. Sign in with your ORCID, which will then take you to the ADC data catalog.
 
-![](images/ADC-homepage.png)
+![](images/arctic-data-center/adc-homepage-2026.png)
 
 You can then navigate to Data -> Portals.