I noticed a previous thread here about Data Papers and Data Management - https://www.loomio.org/d/8DsMNthH/data-papers-and-data-management. There was a brief discussion on whether EarthArXiv was suitable for uploading research posters, but there wasn't a clear decision on how feasible this is.
My situation is that I have an AGU poster for some research that was sponsored by an external funder; this poster will form the basis of a manuscript that I am currently preparing. I would like to be able to publically display this work whilst I am writing the paper.
To me, EarthArXiv is possibly the best and most credible place for this kind of material, especially as ESSOAr is not yet up-and-running. I realise that FigShare is an option, but to me, the audience is too general and probably lacks a bit of credibility compared to EarthArXiv / ESSOAr.