add conditions of use to README.md

README.md

@@ -6,3 +6,11 @@ For usage instructions, see the [ACCESS-OM2 wiki](https://github.com/COSIMA/acce
 Run length and timestep are set in `accessom2.nml`. The default timestep for this configuration is 1350 seconds, and the model is stable with this timestep right from the start. After the first year or two of model equilibration you may be able to run with a 1800s timestep for faster throughput.
 
 **NOTE:** All ACCESS-OM2 model components and configurations are undergoing continual improvement. We strongly recommend that you "watch" this repo (see button at top of screen; ask to be notified of all conversations) and also watch [ACCESS-OM2](https://github.com/COSIMA/access-om2), all the [component models](https://github.com/COSIMA/access-om2/tree/master/src), and [payu](https://github.com/payu-org/payu) to be kept informed of updates, problems and bug fixes as they arise.
+
+## Conditions of use
+
+We request that users of this or other ACCESS-OM2 model code:
+1. consider citing Kiss et al. (2020) ([http://doi.org/10.5194/gmd-13-401-2020](http://doi.org/10.5194/gmd-13-401-2020))
+2. include an acknowledgement such as the following:
+*The authors thank the Consortium for Ocean-Sea Ice Modelling in Australia (COSIMA; [http://www.cosima.org.au](http://www.cosima.org.au)) for making the ACCESS-OM2 suite of models available at [https://github.com/COSIMA/access-om2](https://github.com/COSIMA/access-om2).*
+3. let us know of any publications which use these models or data so we can add them to [our list](https://scholar.google.com/citations?hl=en&user=inVqu_4AAAAJ).