The Carbon Almanac is a non-profit, volunteer collaborative project organised by Seth Godin that is nearing its release date. Seth just announced organisation partnerships (it's been in the works for a while but this is the first public announcement) and I think it could be a great opportunity for EA organisations.
In both directions, really: You can help a science-based climate project that will probably make a huge splash (Seth Godin has massive reach) and at the same time get visibility for your organisation.
You don't necessarily have to be a climate-focused organisation, for any EA organisation that considers climate a worthwhile cause area, this is probably an effective intervention.
I've been involved in the project since November, feel free to ask any questions here and I'll try to answer them.