Update README.md

README.md

@@ -63,6 +63,14 @@ pip install anemoi-inference[plugin] anemoi-models==0.2
 ai-models anemoi --checkpoint aifs_single_v0.2.1.ckpt --file example_20241107_12_n320.grib
 ```
 
+The input grib file can be downloaded from MARS:
+
+```
+ai-model anemoi --retrieve-requests --checkpoint aifs_single_v0.2.1.ckpt > request_latest.mars
+mars request_latest.mars
+```
+
+
 ## Training Details
 
 ### Training Data